./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_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_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/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_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/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_c383ebb8-27f1-4375-9d61-99070e8a1977/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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:22:14,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:22:14,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:22:14,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:22:14,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:22:14,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:22:14,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:22:14,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:22:14,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:22:14,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:22:14,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:22:14,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:22:14,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:22:14,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:22:14,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:22:14,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:22:14,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:22:14,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:22:14,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:22:14,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:22:14,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:22:14,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:22:14,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:22:14,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:22:14,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:22:14,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:22:14,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:22:14,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:22:14,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:22:14,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:22:14,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:22:14,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:22:14,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:22:14,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:22:14,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:22:14,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:22:14,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:22:14,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:22:14,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:22:14,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:22:14,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:22:14,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:22:15,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:22:15,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:22:15,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:22:15,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:22:15,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:22:15,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:22:15,004 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:22:15,005 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:22:15,005 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:22:15,005 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:22:15,005 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:22:15,005 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:22:15,006 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:22:15,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:22:15,006 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:22:15,006 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:22:15,006 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:22:15,007 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:22:15,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:22:15,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:22:15,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:22:15,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:22:15,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:22:15,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:22:15,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:22:15,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:22:15,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:22:15,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:22:15,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:22:15,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:22:15,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:22:15,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:22:15,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:22:15,010 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:22:15,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:22:15,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:22:15,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:22:15,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:22:15,011 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_c383ebb8-27f1-4375-9d61-99070e8a1977/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2021-11-21 01:22:15,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:22:15,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:22:15,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:22:15,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:22:15,306 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:22:15,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2021-11-21 01:22:15,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/data/9fe1ac545/143510e83ba448de82c6f2aefa6b97ea/FLAG1952e6dd8 [2021-11-21 01:22:16,103 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:22:16,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2021-11-21 01:22:16,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/data/9fe1ac545/143510e83ba448de82c6f2aefa6b97ea/FLAG1952e6dd8 [2021-11-21 01:22:16,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/data/9fe1ac545/143510e83ba448de82c6f2aefa6b97ea [2021-11-21 01:22:16,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:22:16,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:22:16,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:22:16,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:22:16,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:22:16,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:22:16" (1/1) ... [2021-11-21 01:22:16,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eebf7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:16, skipping insertion in model container [2021-11-21 01:22:16,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:22:16" (1/1) ... [2021-11-21 01:22:16,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:22:16,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:22:17,099 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_c383ebb8-27f1-4375-9d61-99070e8a1977/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2021-11-21 01:22:17,107 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_c383ebb8-27f1-4375-9d61-99070e8a1977/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2021-11-21 01:22:18,042 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:22:18,117 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,137 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:22:18,521 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:22:18,523 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:22:18,524 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:22:18,526 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:22:18,526 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:22:18,527 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:22:18,528 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:22:18,529 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:22:18,530 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:22:18,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:22:18,791 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:22:18,805 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_c383ebb8-27f1-4375-9d61-99070e8a1977/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2021-11-21 01:22:18,805 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_c383ebb8-27f1-4375-9d61-99070e8a1977/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2021-11-21 01:22:18,873 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:22:18,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:18,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:19,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:22:19,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:22:19,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:22:19,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:22:19,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:22:19,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:22:19,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:22:19,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:22:19,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:22:19,035 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:22:19,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:19,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:19,132 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:19,138 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:19,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:22:19,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:22:19,362 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:22:19,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19 WrapperNode [2021-11-21 01:22:19,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:22:19,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:22:19,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:22:19,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:22:19,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,549 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 847 [2021-11-21 01:22:19,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:22:19,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:22:19,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:22:19,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:22:19,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:22:19,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:22:19,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:22:19,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:22:19,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (1/1) ... [2021-11-21 01:22:19,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:22:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:19,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:22:19,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:22:19,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:22:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-21 01:22:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-21 01:22:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 01:22:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 01:22:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:22:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:22:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-21 01:22:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-21 01:22:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:22:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 01:22:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 01:22:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:22:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:22:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:22:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:22:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:22:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-21 01:22:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-21 01:22:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:22:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:22:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:22:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:22:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 01:22:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 01:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 01:22:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 01:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-21 01:22:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-21 01:22:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-21 01:22:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-21 01:22:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-21 01:22:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-21 01:22:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:22:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:22:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-21 01:22:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-21 01:22:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-21 01:22:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-21 01:22:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:22:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-21 01:22:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-21 01:22:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:22:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:22:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 01:22:19,807 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 01:22:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 01:22:19,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 01:22:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-21 01:22:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-21 01:22:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:22:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-21 01:22:19,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-21 01:22:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2021-11-21 01:22:19,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2021-11-21 01:22:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:22:20,215 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:22:20,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:22:21,429 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:22:21,579 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:22:21,580 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:22:21,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:22:21 BoogieIcfgContainer [2021-11-21 01:22:21,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:22:21,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:22:21,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:22:21,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:22:21,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:22:16" (1/3) ... [2021-11-21 01:22:21,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155de094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:22:21, skipping insertion in model container [2021-11-21 01:22:21,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:19" (2/3) ... [2021-11-21 01:22:21,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155de094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:22:21, skipping insertion in model container [2021-11-21 01:22:21,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:22:21" (3/3) ... [2021-11-21 01:22:21,599 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2021-11-21 01:22:21,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:22:21,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:22:21,664 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:22:21,681 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 01:22:21,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:22:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 127 states have (on average 1.204724409448819) internal successors, (153), 128 states have internal predecessors, (153), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-21 01:22:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-21 01:22:21,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:21,734 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:21,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash -821114386, now seen corresponding path program 1 times [2021-11-21 01:22:21,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:21,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746827532] [2021-11-21 01:22:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:21,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-21 01:22:22,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746827532] [2021-11-21 01:22:22,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746827532] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:22:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283587173] [2021-11-21 01:22:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:22,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:22,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:22,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:22:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:23,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:22:23,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 01:22:23,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:22:23,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283587173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:23,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:22:23,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 01:22:23,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11183534] [2021-11-21 01:22:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:23,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:23,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:23,485 INFO L87 Difference]: Start difference. First operand has 244 states, 127 states have (on average 1.204724409448819) internal successors, (153), 128 states have internal predecessors, (153), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:22:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:24,710 INFO L93 Difference]: Finished difference Result 467 states and 689 transitions. [2021-11-21 01:22:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:22:24,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 114 [2021-11-21 01:22:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:24,726 INFO L225 Difference]: With dead ends: 467 [2021-11-21 01:22:24,726 INFO L226 Difference]: Without dead ends: 244 [2021-11-21 01:22:24,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:22:24,736 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 32 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:24,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1061 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:22:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-21 01:22:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-21 01:22:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2021-11-21 01:22:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 353 transitions. [2021-11-21 01:22:24,812 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 353 transitions. Word has length 114 [2021-11-21 01:22:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:24,813 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 353 transitions. [2021-11-21 01:22:24,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:22:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 353 transitions. [2021-11-21 01:22:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 01:22:24,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:24,818 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 4, 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, 1, 1] [2021-11-21 01:22:24,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:25,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:22:25,042 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:25,043 INFO L85 PathProgramCache]: Analyzing trace with hash -949916096, now seen corresponding path program 1 times [2021-11-21 01:22:25,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:25,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78871125] [2021-11-21 01:22:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:25,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:25,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823525600] [2021-11-21 01:22:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:25,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:25,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:25,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:22:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:25,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:22:25,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-21 01:22:26,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:22:26,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:26,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78871125] [2021-11-21 01:22:26,059 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823525600] [2021-11-21 01:22:26,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823525600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:26,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:26,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:22:26,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723803723] [2021-11-21 01:22:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:26,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:22:26,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:22:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:22:26,063 INFO L87 Difference]: Start difference. First operand 244 states and 353 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-21 01:22:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:27,896 INFO L93 Difference]: Finished difference Result 445 states and 643 transitions. [2021-11-21 01:22:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:22:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 132 [2021-11-21 01:22:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:27,901 INFO L225 Difference]: With dead ends: 445 [2021-11-21 01:22:27,901 INFO L226 Difference]: Without dead ends: 244 [2021-11-21 01:22:27,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:22:27,904 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 127 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:27,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 1454 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 01:22:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-21 01:22:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-21 01:22:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2021-11-21 01:22:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 349 transitions. [2021-11-21 01:22:27,941 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 349 transitions. Word has length 132 [2021-11-21 01:22:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:27,942 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 349 transitions. [2021-11-21 01:22:27,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-21 01:22:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 349 transitions. [2021-11-21 01:22:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-21 01:22:27,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:27,945 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:27,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:28,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 01:22:28,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:28,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1708083302, now seen corresponding path program 2 times [2021-11-21 01:22:28,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:28,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819304537] [2021-11-21 01:22:28,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:28,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:28,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:28,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957659043] [2021-11-21 01:22:28,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:22:28,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:28,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:28,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:28,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:22:28,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:22:28,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:22:28,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1890 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:22:28,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-21 01:22:29,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:22:29,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:29,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819304537] [2021-11-21 01:22:29,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:29,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957659043] [2021-11-21 01:22:29,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957659043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:29,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:29,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:29,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935290475] [2021-11-21 01:22:29,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:29,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:29,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:29,005 INFO L87 Difference]: Start difference. First operand 244 states and 349 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:22:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:29,949 INFO L93 Difference]: Finished difference Result 427 states and 602 transitions. [2021-11-21 01:22:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:22:29,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2021-11-21 01:22:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:29,956 INFO L225 Difference]: With dead ends: 427 [2021-11-21 01:22:29,960 INFO L226 Difference]: Without dead ends: 248 [2021-11-21 01:22:29,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 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 01:22:29,962 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:29,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1231 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:22:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-21 01:22:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-11-21 01:22:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2021-11-21 01:22:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 354 transitions. [2021-11-21 01:22:29,992 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 354 transitions. Word has length 141 [2021-11-21 01:22:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:29,993 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 354 transitions. [2021-11-21 01:22:29,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:22:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 354 transitions. [2021-11-21 01:22:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-21 01:22:29,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:29,997 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:30,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:30,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:30,225 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash -188427751, now seen corresponding path program 1 times [2021-11-21 01:22:30,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:30,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992510410] [2021-11-21 01:22:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:30,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:30,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:30,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597861410] [2021-11-21 01:22:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:30,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:30,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:22:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:30,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:22:30,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-21 01:22:31,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:22:31,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:31,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992510410] [2021-11-21 01:22:31,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:31,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597861410] [2021-11-21 01:22:31,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597861410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:31,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:31,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:22:31,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074756806] [2021-11-21 01:22:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:31,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:22:31,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:22:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:22:31,200 INFO L87 Difference]: Start difference. First operand 248 states and 354 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-21 01:22:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:32,388 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2021-11-21 01:22:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:22:32,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 145 [2021-11-21 01:22:32,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:32,392 INFO L225 Difference]: With dead ends: 448 [2021-11-21 01:22:32,392 INFO L226 Difference]: Without dead ends: 248 [2021-11-21 01:22:32,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:22:32,394 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 175 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:32,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1632 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:22:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-21 01:22:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-11-21 01:22:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2021-11-21 01:22:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2021-11-21 01:22:32,460 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 145 [2021-11-21 01:22:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:32,462 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2021-11-21 01:22:32,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-21 01:22:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2021-11-21 01:22:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-21 01:22:32,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:32,472 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:32,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:32,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:32,693 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash 74652997, now seen corresponding path program 2 times [2021-11-21 01:22:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:32,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178277099] [2021-11-21 01:22:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:32,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:32,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:32,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637255536] [2021-11-21 01:22:32,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:22:32,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:32,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:32,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:22:33,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:22:33,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:22:33,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:22:33,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-21 01:22:34,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:22:34,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:34,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178277099] [2021-11-21 01:22:34,078 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637255536] [2021-11-21 01:22:34,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637255536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:34,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:34,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:22:34,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445053711] [2021-11-21 01:22:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:34,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:22:34,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:34,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:22:34,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:34,084 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-21 01:22:35,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:35,242 INFO L93 Difference]: Finished difference Result 445 states and 620 transitions. [2021-11-21 01:22:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:22:35,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 154 [2021-11-21 01:22:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:35,245 INFO L225 Difference]: With dead ends: 445 [2021-11-21 01:22:35,246 INFO L226 Difference]: Without dead ends: 248 [2021-11-21 01:22:35,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 01:22:35,248 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 0 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:35,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1126 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:22:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-21 01:22:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-11-21 01:22:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (99), 93 states have call predecessors, (99), 92 states have call successors, (99) [2021-11-21 01:22:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 347 transitions. [2021-11-21 01:22:35,271 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 347 transitions. Word has length 154 [2021-11-21 01:22:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:35,272 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 347 transitions. [2021-11-21 01:22:35,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-21 01:22:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 347 transitions. [2021-11-21 01:22:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-21 01:22:35,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:35,275 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:35,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:35,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:35,495 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1276385801, now seen corresponding path program 3 times [2021-11-21 01:22:35,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:35,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326798724] [2021-11-21 01:22:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:35,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:35,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:35,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471572315] [2021-11-21 01:22:35,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:22:35,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:35,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:35,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:22:36,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:22:36,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:22:36,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:22:36,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-21 01:22:36,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:22:36,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:36,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326798724] [2021-11-21 01:22:36,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471572315] [2021-11-21 01:22:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471572315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:36,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:36,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:22:36,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337272143] [2021-11-21 01:22:36,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:36,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:22:36,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:22:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:22:36,557 INFO L87 Difference]: Start difference. First operand 248 states and 347 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-21 01:22:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:37,981 INFO L93 Difference]: Finished difference Result 432 states and 594 transitions. [2021-11-21 01:22:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:22:37,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 163 [2021-11-21 01:22:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:37,985 INFO L225 Difference]: With dead ends: 432 [2021-11-21 01:22:37,985 INFO L226 Difference]: Without dead ends: 248 [2021-11-21 01:22:37,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:22:37,987 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 220 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:37,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1839 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:22:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-21 01:22:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-11-21 01:22:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2021-11-21 01:22:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 344 transitions. [2021-11-21 01:22:38,009 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 344 transitions. Word has length 163 [2021-11-21 01:22:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:38,010 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 344 transitions. [2021-11-21 01:22:38,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-21 01:22:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 344 transitions. [2021-11-21 01:22:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-21 01:22:38,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:38,013 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:38,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:38,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:38,241 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1561834877, now seen corresponding path program 1 times [2021-11-21 01:22:38,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017992859] [2021-11-21 01:22:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:38,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:38,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005004725] [2021-11-21 01:22:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:38,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:38,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:38,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:22:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:38,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 3034 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-21 01:22:38,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 159 proven. 28 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-21 01:22:39,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:22:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-21 01:22:40,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017992859] [2021-11-21 01:22:40,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005004725] [2021-11-21 01:22:40,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005004725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:22:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [590576373] [2021-11-21 01:22:40,680 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2021-11-21 01:22:40,681 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:22:40,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:22:40,690 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:22:40,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:22:46,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,729 INFO L244 Elim1Store]: Index analysis took 403 ms [2021-11-21 01:23:03,448 WARN L227 SmtUtils]: Spent 16.61s on a formula simplification. DAG size of input: 1749 DAG size of output: 1163 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:23:03,456 INFO L354 Elim1Store]: treesize reduction 1948, result has 47.2 percent of original size [2021-11-21 01:23:03,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19310 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 194 case distinctions, treesize of input 992 treesize of output 2350 [2021-11-21 01:23:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:29,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:23:29,310 INFO L244 Elim1Store]: Index analysis took 870 ms [2021-11-21 01:24:04,203 WARN L227 SmtUtils]: Spent 34.82s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:24:04,207 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 01:24:04,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 01:24:32,665 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:24:32,800 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:24:33,494 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:24:35,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:24:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:35,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:24:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:35,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:35,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:35,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 01:24:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:35,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:24:36,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:24:36,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:24:36,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2021-11-21 01:24:36,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-21 01:24:37,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:24:37,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:24:37,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:24:37,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:24:37,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:24:37,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:24:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:37,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:24:37,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:24:37,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:24:37,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:37,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:24:37,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:24:37,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:24:38,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:24:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:38,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:24:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:38,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:24:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:44,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:24:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:44,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:24:44,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:44,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:24:48,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:24:48,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:25:17,500 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:25:17,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-21 01:25:17,883 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-21 01:25:17,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-21 01:25:19,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,587 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:25:19,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-21 01:25:19,617 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:25:19,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:25:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,740 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:25:19,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-21 01:25:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:19,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:19,813 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:19,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 20 [2021-11-21 01:25:24,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:25:24,609 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:25:24,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:25:29,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:25:29,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,469 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:25:29,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-21 01:25:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,549 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 20 [2021-11-21 01:25:29,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,586 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:25:29,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-21 01:25:44,976 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:25:45,251 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:25:45,375 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 59 for LOIs [2021-11-21 01:25:45,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:25:45,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:25:46,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:25:46,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:25:46,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:46,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:46,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:25:46,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:25:47,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:47,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:47,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:47,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:25:47,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:25:47,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:25:47,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:25:47,866 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:25:47,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 80 [2021-11-21 01:25:50,771 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 108 for LOIs [2021-11-21 01:25:54,700 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 94 for LOIs [2021-11-21 01:25:55,073 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 67 for LOIs [2021-11-21 01:25:55,528 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 80 for LOIs [2021-11-21 01:26:05,028 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 87 for LOIs [2021-11-21 01:26:05,290 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2021-11-21 01:26:05,428 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 77 for LOIs [2021-11-21 01:26:07,125 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 54 for LOIs [2021-11-21 01:26:07,316 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:26:26,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [590576373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:26,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:26:26,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [19, 13] total 70 [2021-11-21 01:26:26,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955328115] [2021-11-21 01:26:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:26,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-21 01:26:26,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-21 01:26:26,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=4537, Unknown=0, NotChecked=0, Total=4830 [2021-11-21 01:26:26,704 INFO L87 Difference]: Start difference. First operand 248 states and 344 transitions. Second operand has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 27 states have internal predecessors, (46), 16 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2021-11-21 01:26:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:34,531 INFO L93 Difference]: Finished difference Result 519 states and 712 transitions. [2021-11-21 01:26:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-21 01:26:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 27 states have internal predecessors, (46), 16 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) Word has length 172 [2021-11-21 01:26:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:34,536 INFO L225 Difference]: With dead ends: 519 [2021-11-21 01:26:34,536 INFO L226 Difference]: Without dead ends: 295 [2021-11-21 01:26:34,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=303, Invalid=4667, Unknown=0, NotChecked=0, Total=4970 [2021-11-21 01:26:34,540 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 55 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1565 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:34,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 3045 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1380 Invalid, 0 Unknown, 1565 Unchecked, 7.4s Time] [2021-11-21 01:26:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-21 01:26:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 287. [2021-11-21 01:26:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 151 states have (on average 1.1721854304635762) internal successors, (177), 152 states have internal predecessors, (177), 103 states have call successors, (103), 31 states have call predecessors, (103), 32 states have return successors, (109), 103 states have call predecessors, (109), 102 states have call successors, (109) [2021-11-21 01:26:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 389 transitions. [2021-11-21 01:26:34,611 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 389 transitions. Word has length 172 [2021-11-21 01:26:34,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:34,612 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 389 transitions. [2021-11-21 01:26:34,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 27 states have internal predecessors, (46), 16 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2021-11-21 01:26:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 389 transitions. [2021-11-21 01:26:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-21 01:26:34,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:34,618 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:26:34,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:26:34,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 01:26:34,837 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:26:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1720627628, now seen corresponding path program 1 times [2021-11-21 01:26:34,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052090033] [2021-11-21 01:26:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:34,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:34,927 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:26:34,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667559548] [2021-11-21 01:26:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:34,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:26:34,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:26:34,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:26:34,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:26:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:35,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-21 01:26:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:26:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 115 proven. 4 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-21 01:26:36,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:26:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-21 01:26:37,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:37,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052090033] [2021-11-21 01:26:37,446 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:26:37,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667559548] [2021-11-21 01:26:37,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667559548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:26:37,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1741743419] [2021-11-21 01:26:37,452 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2021-11-21 01:26:37,452 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:26:37,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:26:37,454 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:26:37,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:26:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:26:41,603 INFO L244 Elim1Store]: Index analysis took 320 ms [2021-11-21 01:27:01,717 WARN L227 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 1749 DAG size of output: 1163 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:27:01,720 INFO L354 Elim1Store]: treesize reduction 1948, result has 47.2 percent of original size [2021-11-21 01:27:01,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19310 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 194 case distinctions, treesize of input 992 treesize of output 2350 [2021-11-21 01:27:49,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:27:50,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:27:50,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:27:50,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:27:50,644 INFO L244 Elim1Store]: Index analysis took 891 ms [2021-11-21 01:28:29,581 WARN L227 SmtUtils]: Spent 38.89s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:28:29,584 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 01:28:29,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 01:29:03,152 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:29:03,244 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:29:03,847 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:29:06,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:06,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:29:06,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:29:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:06,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 01:29:06,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:06,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:29:07,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:29:07,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:29:07,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2021-11-21 01:29:07,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-21 01:29:08,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:29:08,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:29:08,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:29:08,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:29:08,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:29:08,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:29:08,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:08,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:08,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:08,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:08,958 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:29:08,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:29:10,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:29:10,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:10,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:29:10,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:10,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:29:10,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:10,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:29:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:11,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:29:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:11,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:29:11,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:11,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-21 01:29:21,099 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:29:21,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-21 01:29:21,724 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-21 01:29:21,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-21 01:29:24,461 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:29:24,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:29:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,533 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:29:24,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 180 treesize of output 126 [2021-11-21 01:29:24,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,568 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:29:24,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 114 treesize of output 82 [2021-11-21 01:29:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:24,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:24,600 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:29:24,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 73 treesize of output 41 [2021-11-21 01:29:24,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:29:25,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:29:25,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:29:25,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,882 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:29:25,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 180 treesize of output 126 [2021-11-21 01:29:25,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,909 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:29:25,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 114 treesize of output 82 [2021-11-21 01:29:25,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:25,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:29:25,936 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:29:25,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 73 treesize of output 41 [2021-11-21 01:29:26,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:29:33,536 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:29:33,770 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:29:33,845 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 59 for LOIs [2021-11-21 01:29:34,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:29:34,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:29:34,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:34,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:34,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:34,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:29:34,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:29:35,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:35,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:29:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:29:35,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:29:35,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:29:37,939 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-11-21 01:29:37,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 185 [2021-11-21 01:29:51,074 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 108 for LOIs [2021-11-21 01:29:54,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-21 01:29:54,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:29:55,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-21 01:29:55,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:29:59,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-21 01:29:59,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-21 01:29:59,642 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 94 for LOIs [2021-11-21 01:29:59,928 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 79 for LOIs [2021-11-21 01:30:00,157 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 67 for LOIs [2021-11-21 01:30:00,752 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 80 for LOIs [2021-11-21 01:30:12,347 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 87 for LOIs [2021-11-21 01:30:12,589 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2021-11-21 01:30:12,709 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 92 for LOIs [2021-11-21 01:30:17,706 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 74 for LOIs [2021-11-21 01:30:18,254 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:31:02,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1741743419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:02,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:31:02,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [16, 13] total 73 [2021-11-21 01:31:02,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111765994] [2021-11-21 01:31:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:02,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-21 01:31:02,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-21 01:31:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=4961, Unknown=10, NotChecked=0, Total=5256 [2021-11-21 01:31:02,260 INFO L87 Difference]: Start difference. First operand 287 states and 389 transitions. Second operand has 53 states, 32 states have (on average 1.5) internal successors, (48), 29 states have internal predecessors, (48), 17 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2021-11-21 01:31:15,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:15,823 INFO L93 Difference]: Finished difference Result 744 states and 1020 transitions. [2021-11-21 01:31:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-21 01:31:15,824 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 32 states have (on average 1.5) internal successors, (48), 29 states have internal predecessors, (48), 17 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 176 [2021-11-21 01:31:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:15,830 INFO L225 Difference]: With dead ends: 744 [2021-11-21 01:31:15,830 INFO L226 Difference]: Without dead ends: 522 [2021-11-21 01:31:15,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 451 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=285, Invalid=4961, Unknown=10, NotChecked=0, Total=5256 [2021-11-21 01:31:15,835 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 275 mSDsluCounter, 5181 mSDsCounter, 0 mSdLazyCounter, 4469 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 8534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4037 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:15,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 5376 Invalid, 8534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 4469 Invalid, 0 Unknown, 4037 Unchecked, 13.3s Time] [2021-11-21 01:31:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-21 01:31:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 512. [2021-11-21 01:31:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 271 states have (on average 1.1808118081180812) internal successors, (320), 271 states have internal predecessors, (320), 186 states have call successors, (186), 52 states have call predecessors, (186), 54 states have return successors, (196), 188 states have call predecessors, (196), 184 states have call successors, (196) [2021-11-21 01:31:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 702 transitions. [2021-11-21 01:31:15,920 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 702 transitions. Word has length 176 [2021-11-21 01:31:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:15,921 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 702 transitions. [2021-11-21 01:31:15,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 32 states have (on average 1.5) internal successors, (48), 29 states have internal predecessors, (48), 17 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2021-11-21 01:31:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 702 transitions. [2021-11-21 01:31:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-21 01:31:15,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:15,926 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:15,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-21 01:31:16,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 01:31:16,141 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1458404068, now seen corresponding path program 1 times [2021-11-21 01:31:16,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337740927] [2021-11-21 01:31:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:16,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:16,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:16,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442109364] [2021-11-21 01:31:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:16,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:16,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:16,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:16,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:31:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:16,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-21 01:31:16,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-11-21 01:31:17,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:31:17,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337740927] [2021-11-21 01:31:17,249 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442109364] [2021-11-21 01:31:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442109364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:17,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:17,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:31:17,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754244047] [2021-11-21 01:31:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:17,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:31:17,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:31:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:31:17,252 INFO L87 Difference]: Start difference. First operand 512 states and 702 transitions. Second operand has 10 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:31:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:19,102 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2021-11-21 01:31:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:31:19,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) Word has length 184 [2021-11-21 01:31:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:19,109 INFO L225 Difference]: With dead ends: 945 [2021-11-21 01:31:19,109 INFO L226 Difference]: Without dead ends: 492 [2021-11-21 01:31:19,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:31:19,113 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:19,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2712 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 01:31:19,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-21 01:31:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2021-11-21 01:31:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 260 states have (on average 1.1807692307692308) internal successors, (307), 261 states have internal predecessors, (307), 180 states have call successors, (180), 49 states have call predecessors, (180), 51 states have return successors, (226), 181 states have call predecessors, (226), 178 states have call successors, (226) [2021-11-21 01:31:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 713 transitions. [2021-11-21 01:31:19,194 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 713 transitions. Word has length 184 [2021-11-21 01:31:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:19,195 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 713 transitions. [2021-11-21 01:31:19,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (32), 5 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:31:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 713 transitions. [2021-11-21 01:31:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-21 01:31:19,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:19,200 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:19,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:19,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:19,421 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1173289058, now seen corresponding path program 2 times [2021-11-21 01:31:19,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455400810] [2021-11-21 01:31:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:19,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:19,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:19,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767575754] [2021-11-21 01:31:19,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:31:19,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:19,505 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:19,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:31:20,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:31:20,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:31:20,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-21 01:31:20,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-21 01:31:21,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:31:21,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:21,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455400810] [2021-11-21 01:31:21,951 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:21,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767575754] [2021-11-21 01:31:21,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767575754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:21,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:21,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-21 01:31:21,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291261542] [2021-11-21 01:31:21,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:21,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:31:21,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:21,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:31:21,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:31:21,953 INFO L87 Difference]: Start difference. First operand 492 states and 713 transitions. Second operand has 14 states, 9 states have (on average 7.888888888888889) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-21 01:31:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:24,605 INFO L93 Difference]: Finished difference Result 887 states and 1292 transitions. [2021-11-21 01:31:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:31:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 7.888888888888889) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) Word has length 200 [2021-11-21 01:31:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:24,612 INFO L225 Difference]: With dead ends: 887 [2021-11-21 01:31:24,613 INFO L226 Difference]: Without dead ends: 506 [2021-11-21 01:31:24,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:31:24,617 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 64 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 684 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:24,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1507 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1260 Invalid, 0 Unknown, 684 Unchecked, 2.5s Time] [2021-11-21 01:31:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-21 01:31:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 492. [2021-11-21 01:31:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 260 states have (on average 1.1807692307692308) internal successors, (307), 261 states have internal predecessors, (307), 180 states have call successors, (180), 49 states have call predecessors, (180), 51 states have return successors, (224), 181 states have call predecessors, (224), 178 states have call successors, (224) [2021-11-21 01:31:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 711 transitions. [2021-11-21 01:31:24,692 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 711 transitions. Word has length 200 [2021-11-21 01:31:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:24,693 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 711 transitions. [2021-11-21 01:31:24,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 7.888888888888889) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-21 01:31:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 711 transitions. [2021-11-21 01:31:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-21 01:31:24,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:24,698 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:24,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:24,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:24,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 540596243, now seen corresponding path program 1 times [2021-11-21 01:31:24,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:24,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305595828] [2021-11-21 01:31:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:24,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:24,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:24,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911270977] [2021-11-21 01:31:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:24,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:24,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:25,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c383ebb8-27f1-4375-9d61-99070e8a1977/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:31:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-21 01:31:25,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:25,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:31:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:33,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:31:33,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:33,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:31:35,556 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-21 01:31:35,701 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:31:35,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2021-11-21 01:31:35,736 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:31:35,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-11-21 01:31:35,755 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:35,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-21 01:31:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 134 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:31:36,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:37,203 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 27 treesize of output 21 [2021-11-21 01:31:37,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305595828] [2021-11-21 01:31:37,971 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911270977] [2021-11-21 01:31:37,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911270977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105171153] [2021-11-21 01:31:37,976 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2021-11-21 01:31:37,977 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:37,977 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:37,978 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:37,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:31:51,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:51,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:51,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:51,697 INFO L244 Elim1Store]: Index analysis took 561 ms [2021-11-21 01:32:33,520 WARN L227 SmtUtils]: Spent 41.77s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:32:33,523 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 01:32:33,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 01:32:55,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:55,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:55,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:55,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19503 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582