./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_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_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/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_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/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_470ab223-7844-440d-b9b0-64273865df20/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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:46:12,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:46:12,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:46:12,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:46:12,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:46:12,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:46:12,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:46:12,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:46:12,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:46:12,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:46:12,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:46:12,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:46:12,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:46:12,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:46:12,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:46:12,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:46:12,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:46:12,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:46:12,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:46:12,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:46:12,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:46:12,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:46:12,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:46:12,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:46:12,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:46:12,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:46:12,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:46:12,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:46:12,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:46:12,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:46:12,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:46:12,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:46:12,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:46:12,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:46:12,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:46:12,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:46:12,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:46:12,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:46:12,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:46:12,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:46:12,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:46:12,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:46:12,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:46:12,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:46:12,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:46:12,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:46:12,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:46:12,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:46:12,943 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:46:12,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:46:12,943 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:46:12,944 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:46:12,944 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:46:12,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:46:12,944 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:46:12,944 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:46:12,944 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:46:12,945 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:46:12,945 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:46:12,945 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:46:12,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:46:12,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:46:12,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:46:12,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:46:12,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:46:12,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:46:12,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:46:12,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:46:12,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:46:12,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:46:12,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:46:12,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:12,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:46:12,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:46:12,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:46:12,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:46:12,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:46:12,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:46:12,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:46:12,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:46:12,955 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_470ab223-7844-440d-b9b0-64273865df20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2021-11-21 01:46:13,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:46:13,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:46:13,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:46:13,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:46:13,336 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:46:13,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-21 01:46:13,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/data/e33289edc/ca0c4e0a40474a09ae881e5464d0f1d7/FLAG3ad26f69c [2021-11-21 01:46:14,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:46:14,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-21 01:46:14,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/data/e33289edc/ca0c4e0a40474a09ae881e5464d0f1d7/FLAG3ad26f69c [2021-11-21 01:46:14,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/data/e33289edc/ca0c4e0a40474a09ae881e5464d0f1d7 [2021-11-21 01:46:14,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:46:14,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:46:14,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:14,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:46:14,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:46:14,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:14" (1/1) ... [2021-11-21 01:46:14,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b15e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:14, skipping insertion in model container [2021-11-21 01:46:14,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:14" (1/1) ... [2021-11-21 01:46:14,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:46:14,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:46:15,356 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_470ab223-7844-440d-b9b0-64273865df20/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-21 01:46:15,364 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_470ab223-7844-440d-b9b0-64273865df20/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-21 01:46:16,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,678 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,678 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:16,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:46:17,232 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:46:17,233 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:46:17,234 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:46:17,236 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:46:17,236 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:46:17,237 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:46:17,238 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:46:17,239 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:46:17,239 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:46:17,514 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:46:17,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,899 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,900 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:17,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:18,083 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:46:18,111 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_470ab223-7844-440d-b9b0-64273865df20/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-21 01:46:18,111 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_470ab223-7844-440d-b9b0-64273865df20/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-21 01:46:18,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:46:18,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:46:18,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:46:18,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:46:18,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:46:18,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:46:18,200 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:46:18,200 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:46:18,201 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:46:18,201 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:46:18,221 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:46:18,378 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,379 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,398 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:46:18,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:46:18,688 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:46:18,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18 WrapperNode [2021-11-21 01:46:18,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:46:18,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:18,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:46:18,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:46:18,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,964 INFO L137 Inliner]: procedures = 774, calls = 2432, calls flagged for inlining = 69, calls inlined = 12, statements flattened = 622 [2021-11-21 01:46:18,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:46:18,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:46:18,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:46:18,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:46:18,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:18,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:19,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:19,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:19,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:19,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:46:19,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:46:19,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:46:19,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:46:19,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (1/1) ... [2021-11-21 01:46:19,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:46:19,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:19,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:46:19,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:46:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 01:46:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:46:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 01:46:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 01:46:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:46:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:46:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-21 01:46:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-21 01:46:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:46:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:46:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:46:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:46:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:46:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:46:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:46:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 01:46:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 01:46:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:46:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:46:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:46:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-21 01:46:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-21 01:46:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:46:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-21 01:46:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-21 01:46:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:46:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-21 01:46:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-21 01:46:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:46:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-21 01:46:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-21 01:46:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:46:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:46:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-21 01:46:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-21 01:46:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:46:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 01:46:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 01:46:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-21 01:46:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-21 01:46:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:46:19,557 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:46:19,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:46:20,686 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:20,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:20,819 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:46:20,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:20 BoogieIcfgContainer [2021-11-21 01:46:20,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:20,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:20,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:20,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:20,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:14" (1/3) ... [2021-11-21 01:46:20,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcb83c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:20, skipping insertion in model container [2021-11-21 01:46:20,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:18" (2/3) ... [2021-11-21 01:46:20,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcb83c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:20, skipping insertion in model container [2021-11-21 01:46:20,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:20" (3/3) ... [2021-11-21 01:46:20,838 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness.i [2021-11-21 01:46:20,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:20,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:46:20,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:20,919 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 01:46:20,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:46:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-21 01:46:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-21 01:46:20,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:20,956 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:20,957 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1806303517, now seen corresponding path program 1 times [2021-11-21 01:46:20,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:20,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598897579] [2021-11-21 01:46:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:20,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:21,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:46:21,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633938754] [2021-11-21 01:46:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:21,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:21,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:21,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:46:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:21,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2276 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:46:22,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-21 01:46:22,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:22,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598897579] [2021-11-21 01:46:22,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:46:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633938754] [2021-11-21 01:46:22,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633938754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:22,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:22,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:46:22,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930958651] [2021-11-21 01:46:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:22,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:46:22,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:46:22,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:46:22,376 INFO L87 Difference]: Start difference. First operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:46:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:22,631 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2021-11-21 01:46:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:46:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 100 [2021-11-21 01:46:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:22,643 INFO L225 Difference]: With dead ends: 136 [2021-11-21 01:46:22,643 INFO L226 Difference]: Without dead ends: 99 [2021-11-21 01:46:22,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:46:22,650 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:22,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:46:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-21 01:46:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-21 01:46:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 53 states have internal predecessors, (60), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-21 01:46:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2021-11-21 01:46:22,701 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 100 [2021-11-21 01:46:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:22,703 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2021-11-21 01:46:22,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 01:46:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2021-11-21 01:46:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-21 01:46:22,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:22,710 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:22,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:22,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:46:22,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash 493483735, now seen corresponding path program 1 times [2021-11-21 01:46:22,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:22,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489524274] [2021-11-21 01:46:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:22,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:23,026 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:46:23,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268468260] [2021-11-21 01:46:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:23,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:23,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:23,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:46:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:23,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 2304 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:46:23,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:46:23,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:23,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:23,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489524274] [2021-11-21 01:46:23,754 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:46:23,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268468260] [2021-11-21 01:46:23,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268468260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:23,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:23,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:46:23,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580502874] [2021-11-21 01:46:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:23,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:46:23,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:46:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:46:23,760 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:46:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:25,319 INFO L93 Difference]: Finished difference Result 192 states and 239 transitions. [2021-11-21 01:46:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:46:25,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 105 [2021-11-21 01:46:25,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:25,329 INFO L225 Difference]: With dead ends: 192 [2021-11-21 01:46:25,330 INFO L226 Difference]: Without dead ends: 103 [2021-11-21 01:46:25,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 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 01:46:25,341 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:25,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 408 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:46:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-21 01:46:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-21 01:46:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 56 states have internal predecessors, (63), 32 states have call successors, (32), 14 states have call predecessors, (32), 15 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2021-11-21 01:46:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-11-21 01:46:25,369 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 105 [2021-11-21 01:46:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:25,375 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-11-21 01:46:25,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:46:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2021-11-21 01:46:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-21 01:46:25,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:25,382 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:25,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:25,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:25,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash -774970137, now seen corresponding path program 1 times [2021-11-21 01:46:25,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:25,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624880046] [2021-11-21 01:46:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:25,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-21 01:46:26,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:26,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624880046] [2021-11-21 01:46:26,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624880046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:46:26,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712894423] [2021-11-21 01:46:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:26,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:26,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:26,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:46:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:26,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-21 01:46:26,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:27,007 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 16 treesize of output 12 [2021-11-21 01:46:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-21 01:46:27,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:27,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712894423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:27,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:46:27,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2021-11-21 01:46:27,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703280751] [2021-11-21 01:46:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:27,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:46:27,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:46:27,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:46:27,653 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-21 01:46:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:29,545 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2021-11-21 01:46:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:46:29,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 113 [2021-11-21 01:46:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:29,548 INFO L225 Difference]: With dead ends: 190 [2021-11-21 01:46:29,548 INFO L226 Difference]: Without dead ends: 105 [2021-11-21 01:46:29,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:46:29,550 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 13 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:29,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 681 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 69 Unchecked, 1.8s Time] [2021-11-21 01:46:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-21 01:46:29,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-21 01:46:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2021-11-21 01:46:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 129 transitions. [2021-11-21 01:46:29,565 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 129 transitions. Word has length 113 [2021-11-21 01:46:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:29,565 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 129 transitions. [2021-11-21 01:46:29,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-21 01:46:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 129 transitions. [2021-11-21 01:46:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-21 01:46:29,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:29,569 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:29,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:29,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:29,792 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash -658417536, now seen corresponding path program 1 times [2021-11-21 01:46:29,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:29,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512254425] [2021-11-21 01:46:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:29,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-21 01:46:30,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:30,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512254425] [2021-11-21 01:46:30,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512254425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:46:30,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360734366] [2021-11-21 01:46:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:30,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:30,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:30,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:30,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:46:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:30,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:46:30,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:30,936 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 16 treesize of output 12 [2021-11-21 01:46:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-21 01:46:31,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:46:31,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360734366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:31,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:46:31,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2021-11-21 01:46:31,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070635822] [2021-11-21 01:46:31,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:31,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:46:31,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:46:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:46:31,416 INFO L87 Difference]: Start difference. First operand 105 states and 129 transitions. Second operand has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-21 01:46:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:33,028 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2021-11-21 01:46:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:46:33,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 119 [2021-11-21 01:46:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:33,032 INFO L225 Difference]: With dead ends: 196 [2021-11-21 01:46:33,032 INFO L226 Difference]: Without dead ends: 108 [2021-11-21 01:46:33,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:46:33,034 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 16 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:33,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 518 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 57 Unchecked, 1.6s Time] [2021-11-21 01:46:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-21 01:46:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-11-21 01:46:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 33 states have call successors, (33), 16 states have call predecessors, (33), 15 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2021-11-21 01:46:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2021-11-21 01:46:33,048 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 119 [2021-11-21 01:46:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:33,049 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2021-11-21 01:46:33,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-21 01:46:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2021-11-21 01:46:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:46:33,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:33,052 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:33,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:46:33,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:33,280 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:46:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -569912338, now seen corresponding path program 1 times [2021-11-21 01:46:33,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:33,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848311220] [2021-11-21 01:46:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:33,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-21 01:46:33,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848311220] [2021-11-21 01:46:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848311220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:46:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156495260] [2021-11-21 01:46:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:33,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:46:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:46:33,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:46:33,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:46:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:34,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-21 01:46:34,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:46:34,726 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 16 treesize of output 12 [2021-11-21 01:46:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-21 01:46:36,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:46:37,194 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 69 treesize of output 65 [2021-11-21 01:46:37,445 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 60 treesize of output 56 [2021-11-21 01:46:37,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156495260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:46:37,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1438962392] [2021-11-21 01:46:37,955 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2021-11-21 01:46:37,955 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:46:37,960 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:46:37,969 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:46:37,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:46:42,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:46:42,698 INFO L244 Elim1Store]: Index analysis took 666 ms [2021-11-21 01:47:32,476 WARN L227 SmtUtils]: Spent 49.69s on a formula simplification. DAG size of input: 2362 DAG size of output: 1378 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:47:32,485 INFO L354 Elim1Store]: treesize reduction 4522, result has 34.3 percent of original size [2021-11-21 01:47:32,491 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 197 case distinctions, treesize of input 995 treesize of output 2959 [2021-11-21 01:48:18,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:18,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:48:20,506 INFO L244 Elim1Store]: Index analysis took 2719 ms [2021-11-21 01:50:10,709 WARN L227 SmtUtils]: Spent 1.84m on a formula simplification. DAG size of input: 3151 DAG size of output: 1575 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:50:10,715 INFO L354 Elim1Store]: treesize reduction 7470, result has 25.5 percent of original size [2021-11-21 01:50:10,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 200 select indices, 200 select index equivalence classes, 19507 disjoint index pairs (out of 19900 index pairs), introduced 200 new quantified variables, introduced 591 case distinctions, treesize of input 1014 treesize of output 3173 [2021-11-21 01:51:17,023 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:51:17,218 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:51:17,730 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:51:22,148 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 01:51:22,163 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 01:51:22,689 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 01:51:22,695 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 01:51:22,798 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 01:51:22,801 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 01:51:23,249 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 01:51:23,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 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 01:51:23,368 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 01:51:23,377 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 01:51:23,488 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:51:23,489 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 31 treesize of output 33 [2021-11-21 01:51:23,900 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 01:51:23,990 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 01:51:24,737 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 01:51:24,779 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 01:51:27,493 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:51:27,790 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:51:27,914 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 57 for LOIs [2021-11-21 01:51:28,005 INFO L197 IcfgInterpreter]: Interpreting procedure hash_table_state_required_bytes with input of size 92 for LOIs [2021-11-21 01:51:28,423 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:51:28,424 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 31 treesize of output 33 [2021-11-21 01:51:28,450 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:28,451 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 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-21 01:51:28,953 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:51:28,953 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 31 treesize of output 33 [2021-11-21 01:51:28,982 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:28,982 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 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-21 01:51:30,166 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:51:30,166 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 28 treesize of output 30 [2021-11-21 01:51:30,587 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:51:30,588 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 31 treesize of output 33 [2021-11-21 01:51:30,615 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:30,615 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 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-21 01:51:30,809 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 105 for LOIs [2021-11-21 01:51:33,923 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:33,923 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 31 treesize of output 27 [2021-11-21 01:51:33,932 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:33,933 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 21 treesize of output 17 [2021-11-21 01:51:34,598 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:34,598 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 31 treesize of output 27 [2021-11-21 01:51:34,625 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:34,625 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 21 treesize of output 17 [2021-11-21 01:51:36,676 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:36,677 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 31 treesize of output 27 [2021-11-21 01:51:36,695 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:36,695 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 21 treesize of output 17 [2021-11-21 01:51:37,124 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 89 for LOIs [2021-11-21 01:51:37,516 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 73 for LOIs [2021-11-21 01:51:37,797 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-21 01:51:37,996 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_power_of_two with input of size 57 for LOIs [2021-11-21 01:51:38,123 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:51:49,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1438962392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:49,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:51:49,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [13, 13] total 46 [2021-11-21 01:51:49,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653279388] [2021-11-21 01:51:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:49,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:51:49,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:49,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:51:49,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2385, Unknown=2, NotChecked=0, Total=2550 [2021-11-21 01:51:49,409 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 25 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 8 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-21 01:51:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:51,766 INFO L93 Difference]: Finished difference Result 229 states and 275 transitions. [2021-11-21 01:51:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 01:51:51,767 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 8 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 123 [2021-11-21 01:51:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:51,769 INFO L225 Difference]: With dead ends: 229 [2021-11-21 01:51:51,769 INFO L226 Difference]: Without dead ends: 127 [2021-11-21 01:51:51,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 245 SyntacticMatches, 13 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=173, Invalid=2581, Unknown=2, NotChecked=0, Total=2756 [2021-11-21 01:51:51,772 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:51,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 985 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 810 Unchecked, 2.1s Time] [2021-11-21 01:51:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-21 01:51:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-11-21 01:51:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 36 states have call successors, (36), 22 states have call predecessors, (36), 20 states have return successors, (37), 34 states have call predecessors, (37), 35 states have call successors, (37) [2021-11-21 01:51:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2021-11-21 01:51:51,791 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 123 [2021-11-21 01:51:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:51,792 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2021-11-21 01:51:51,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 8 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2021-11-21 01:51:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2021-11-21 01:51:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 01:51:51,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:51,794 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:51:51,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:51:52,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:52,008 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:51:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash -246233332, now seen corresponding path program 1 times [2021-11-21 01:51:52,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:52,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547331354] [2021-11-21 01:51:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:52,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:52,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:51:52,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492456760] [2021-11-21 01:51:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:52,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:51:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:51:52,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:51:52,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470ab223-7844-440d-b9b0-64273865df20/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:51:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:52,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 148 conjunts are in the unsatisfiable core [2021-11-21 01:51:52,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:52,625 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:51:52,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:51:52,929 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:51:52,929 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:51:52,975 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:51:52,975 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 21 treesize of output 17 [2021-11-21 01:51:53,669 INFO L354 Elim1Store]: treesize reduction 211, result has 10.2 percent of original size [2021-11-21 01:51:53,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 97 [2021-11-21 01:51:54,271 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-21 01:51:54,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2021-11-21 01:51:54,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:54,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:51:54,407 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-21 01:51:54,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 36 treesize of output 53 [2021-11-21 01:51:54,594 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 69 treesize of output 65 [2021-11-21 01:51:54,645 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-21 01:51:54,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 78 treesize of output 95 [2021-11-21 01:52:10,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:52:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:52:10,315 INFO L354 Elim1Store]: treesize reduction 291, result has 19.8 percent of original size [2021-11-21 01:52:10,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 93 treesize of output 142 [2021-11-21 01:52:13,668 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= (store |c_old(#memory_$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 01:52:20,200 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset|))))) is different from true [2021-11-21 01:52:40,611 INFO L354 Elim1Store]: treesize reduction 86, result has 14.9 percent of original size [2021-11-21 01:52:40,611 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 2 case distinctions, treesize of input 110 treesize of output 73 [2021-11-21 01:52:40,674 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-11-21 01:52:40,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 85 [2021-11-21 01:54:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 14 trivial. 4 not checked. [2021-11-21 01:54:14,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:54:15,503 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 69 treesize of output 65 [2021-11-21 01:54:16,158 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 60 treesize of output 56 [2021-11-21 01:54:17,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:54:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547331354] [2021-11-21 01:54:17,001 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:54:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492456760] [2021-11-21 01:54:17,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492456760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:54:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [180213136] [2021-11-21 01:54:17,007 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2021-11-21 01:54:17,007 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:54:17,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:54:17,008 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:54:17,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:54:22,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:54:22,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:54:23,745 INFO L244 Elim1Store]: Index analysis took 1375 ms [2021-11-21 01:55:17,855 WARN L227 SmtUtils]: Spent 54.05s on a formula simplification. DAG size of input: 2362 DAG size of output: 1378 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:55:17,858 INFO L354 Elim1Store]: treesize reduction 4522, result has 34.3 percent of original size [2021-11-21 01:55:17,863 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 197 case distinctions, treesize of input 995 treesize of output 2959 [2021-11-21 01:56:33,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:56:33,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:56:34,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:56:36,652 INFO L244 Elim1Store]: Index analysis took 3864 ms [2021-11-21 01:58:23,519 WARN L227 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 3151 DAG size of output: 1575 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:58:23,523 INFO L354 Elim1Store]: treesize reduction 7470, result has 25.5 percent of original size [2021-11-21 01:58:23,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 200 select indices, 200 select index equivalence classes, 19507 disjoint index pairs (out of 19900 index pairs), introduced 200 new quantified variables, introduced 591 case distinctions, treesize of input 1014 treesize of output 3173 [2021-11-21 01:59:22,071 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:59:22,237 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-21 01:59:22,817 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196