./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/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 c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:37:58,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:37:58,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:37:59,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:37:59,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:37:59,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:37:59,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:37:59,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:37:59,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:37:59,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:37:59,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:37:59,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:37:59,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:37:59,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:37:59,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:37:59,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:37:59,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:37:59,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:37:59,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:37:59,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:37:59,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:37:59,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:37:59,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:37:59,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:37:59,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:37:59,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:37:59,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:37:59,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:37:59,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:37:59,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:37:59,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:37:59,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:37:59,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:37:59,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:37:59,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:37:59,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:37:59,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:37:59,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:37:59,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:37:59,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:37:59,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:37:59,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:37:59,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:37:59,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:37:59,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:37:59,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:37:59,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:37:59,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:37:59,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:37:59,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:37:59,117 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:37:59,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:37:59,118 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:37:59,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:37:59,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:37:59,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:37:59,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:37:59,119 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:37:59,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:37:59,120 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:37:59,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:37:59,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:37:59,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:37:59,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:37:59,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:37:59,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:37:59,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:37:59,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:37:59,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:37:59,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:37:59,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:37:59,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:37:59,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:37:59,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:37:59,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:37:59,125 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:37:59,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:37:59,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:37:59,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:37:59,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:37:59,127 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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2021-11-20 23:37:59,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:37:59,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:37:59,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:37:59,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:37:59,518 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:37:59,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-20 23:37:59,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/data/cb852b444/c3665b74bc944712bffdc2c780080f2a/FLAG94d16617e [2021-11-20 23:38:00,639 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:38:00,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2021-11-20 23:38:00,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/data/cb852b444/c3665b74bc944712bffdc2c780080f2a/FLAG94d16617e [2021-11-20 23:38:00,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/data/cb852b444/c3665b74bc944712bffdc2c780080f2a [2021-11-20 23:38:00,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:38:00,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:38:00,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:00,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:38:00,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:38:00,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:00" (1/1) ... [2021-11-20 23:38:00,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8c7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:00, skipping insertion in model container [2021-11-20 23:38:00,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:00" (1/1) ... [2021-11-20 23:38:00,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:38:01,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:38:01,573 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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4486,4499] [2021-11-20 23:38:01,580 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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4546,4559] [2021-11-20 23:38:02,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,890 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:02,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:38:03,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:38:03,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:38:03,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:38:03,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:38:03,404 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:38:03,405 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:38:03,406 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:38:03,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:38:03,408 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:38:03,647 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:38:03,785 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,786 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:38:03,918 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:38:03,934 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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4486,4499] [2021-11-20 23:38:03,935 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_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4546,4559] [2021-11-20 23:38:03,976 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,978 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,978 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:03,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:04,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:38:04,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:38:04,029 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:38:04,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:38:04,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:38:04,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:38:04,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:38:04,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:38:04,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:38:04,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:38:04,055 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:38:04,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:04,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:38:04,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:38:04,504 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:38:04,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04 WrapperNode [2021-11-20 23:38:04,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:04,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:38:04,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:38:04,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:38:04,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,771 INFO L137 Inliner]: procedures = 691, calls = 2616, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 790 [2021-11-20 23:38:04,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:38:04,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:38:04,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:38:04,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:38:04,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:38:04,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:38:04,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:38:04,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:38:04,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (1/1) ... [2021-11-20 23:38:04,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:38:04,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:04,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:38:04,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:38:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:38:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:38:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:38:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:38:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:38:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:38:05,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:38:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:38:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:38:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-20 23:38:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-20 23:38:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:38:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:38:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:38:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:38:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 23:38:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 23:38:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 23:38:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 23:38:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:38:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:38:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:38:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-20 23:38:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-20 23:38:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:38:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 23:38:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 23:38:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:38:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:38:05,287 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:38:05,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:38:06,811 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:38:06,936 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:38:06,937 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:38:06,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:06 BoogieIcfgContainer [2021-11-20 23:38:06,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:38:06,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:38:06,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:38:06,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:38:06,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:00" (1/3) ... [2021-11-20 23:38:06,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a353c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:06, skipping insertion in model container [2021-11-20 23:38:06,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:04" (2/3) ... [2021-11-20 23:38:06,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a353c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:06, skipping insertion in model container [2021-11-20 23:38:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:06" (3/3) ... [2021-11-20 23:38:06,953 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2021-11-20 23:38:06,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:38:06,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:38:07,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:38:07,076 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:38:07,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:38:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-20 23:38:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 23:38:07,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:07,119 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-20 23:38:07,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:07,126 INFO L85 PathProgramCache]: Analyzing trace with hash -484843067, now seen corresponding path program 1 times [2021-11-20 23:38:07,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:07,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050741092] [2021-11-20 23:38:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:07,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-20 23:38:08,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:08,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050741092] [2021-11-20 23:38:08,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050741092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:08,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13923027] [2021-11-20 23:38:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:08,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:08,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:08,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:08,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:38:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:09,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:38:09,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 23:38:09,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:38:09,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13923027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:09,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:38:09,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2021-11-20 23:38:09,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597533527] [2021-11-20 23:38:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:09,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:09,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:38:09,497 INFO L87 Difference]: Start difference. First operand has 74 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 23:38:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:09,767 INFO L93 Difference]: Finished difference Result 135 states and 194 transitions. [2021-11-20 23:38:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:38:09,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 50 [2021-11-20 23:38:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:09,790 INFO L225 Difference]: With dead ends: 135 [2021-11-20 23:38:09,790 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 23:38:09,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:38:09,807 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 19 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:09,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 347 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 23:38:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2021-11-20 23:38:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 47 states have internal predecessors, (54), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-20 23:38:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2021-11-20 23:38:09,891 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 50 [2021-11-20 23:38:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:09,893 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2021-11-20 23:38:09,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 23:38:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2021-11-20 23:38:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 23:38:09,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:09,901 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:09,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:10,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:38:10,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -655259651, now seen corresponding path program 1 times [2021-11-20 23:38:10,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:10,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12359142] [2021-11-20 23:38:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:10,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 23:38:10,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:10,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12359142] [2021-11-20 23:38:10,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12359142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:10,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:10,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:38:10,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578370749] [2021-11-20 23:38:10,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:10,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:38:10,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:38:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:10,506 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 23:38:10,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:10,689 INFO L93 Difference]: Finished difference Result 144 states and 199 transitions. [2021-11-20 23:38:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:38:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2021-11-20 23:38:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:10,699 INFO L225 Difference]: With dead ends: 144 [2021-11-20 23:38:10,700 INFO L226 Difference]: Without dead ends: 115 [2021-11-20 23:38:10,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:38:10,710 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 6 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:10,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 442 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-20 23:38:10,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-11-20 23:38:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 60 states have internal predecessors, (69), 45 states have call successors, (45), 10 states have call predecessors, (45), 11 states have return successors, (47), 43 states have call predecessors, (47), 44 states have call successors, (47) [2021-11-20 23:38:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 161 transitions. [2021-11-20 23:38:10,756 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 161 transitions. Word has length 54 [2021-11-20 23:38:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:10,756 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 161 transitions. [2021-11-20 23:38:10,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 23:38:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 161 transitions. [2021-11-20 23:38:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 23:38:10,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:10,774 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:10,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:38:10,775 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 458782367, now seen corresponding path program 1 times [2021-11-20 23:38:10,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:10,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822946216] [2021-11-20 23:38:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:10,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 23:38:11,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:11,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822946216] [2021-11-20 23:38:11,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822946216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:11,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:11,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:11,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846091974] [2021-11-20 23:38:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:11,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:38:11,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:38:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:11,159 INFO L87 Difference]: Start difference. First operand 113 states and 161 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 23:38:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:11,381 INFO L93 Difference]: Finished difference Result 131 states and 179 transitions. [2021-11-20 23:38:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:38:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 55 [2021-11-20 23:38:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:11,385 INFO L225 Difference]: With dead ends: 131 [2021-11-20 23:38:11,385 INFO L226 Difference]: Without dead ends: 106 [2021-11-20 23:38:11,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:11,387 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 18 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:11,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 570 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-20 23:38:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-11-20 23:38:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 56 states have internal predecessors, (64), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-20 23:38:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2021-11-20 23:38:11,404 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 55 [2021-11-20 23:38:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:11,404 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2021-11-20 23:38:11,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 23:38:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2021-11-20 23:38:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 23:38:11,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:11,408 INFO L514 BasicCegarLoop]: trace histogram [6, 3, 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] [2021-11-20 23:38:11,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:38:11,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 794276576, now seen corresponding path program 1 times [2021-11-20 23:38:11,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:11,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931750887] [2021-11-20 23:38:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:11,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 23:38:12,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931750887] [2021-11-20 23:38:12,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931750887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:12,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316105077] [2021-11-20 23:38:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:12,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:12,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:12,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:12,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:38:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:12,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 23:38:12,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 23:38:13,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:38:13,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316105077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:13,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:38:13,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 19 [2021-11-20 23:38:13,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934886458] [2021-11-20 23:38:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:13,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:38:13,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:38:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:38:13,603 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 23:38:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:14,073 INFO L93 Difference]: Finished difference Result 115 states and 156 transitions. [2021-11-20 23:38:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:38:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 62 [2021-11-20 23:38:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:14,076 INFO L225 Difference]: With dead ends: 115 [2021-11-20 23:38:14,077 INFO L226 Difference]: Without dead ends: 113 [2021-11-20 23:38:14,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:38:14,079 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 19 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:14,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 520 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:38:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-20 23:38:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2021-11-20 23:38:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 59 states have internal predecessors, (67), 39 states have call successors, (39), 11 states have call predecessors, (39), 12 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-20 23:38:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 147 transitions. [2021-11-20 23:38:14,109 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 147 transitions. Word has length 62 [2021-11-20 23:38:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:14,110 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 147 transitions. [2021-11-20 23:38:14,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 23:38:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2021-11-20 23:38:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 23:38:14,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:14,114 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-20 23:38:14,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:14,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:14,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash 55422296, now seen corresponding path program 1 times [2021-11-20 23:38:14,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:14,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166914656] [2021-11-20 23:38:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:14,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 23:38:15,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166914656] [2021-11-20 23:38:15,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166914656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044932515] [2021-11-20 23:38:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:15,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:15,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:15,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:38:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 23:38:15,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 23:38:16,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 23:38:17,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044932515] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:17,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:38:17,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 14] total 39 [2021-11-20 23:38:17,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320702959] [2021-11-20 23:38:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:17,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:38:17,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:17,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:38:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:38:17,562 INFO L87 Difference]: Start difference. First operand 108 states and 147 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-20 23:38:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:18,903 INFO L93 Difference]: Finished difference Result 164 states and 228 transitions. [2021-11-20 23:38:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:38:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 62 [2021-11-20 23:38:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:18,906 INFO L225 Difference]: With dead ends: 164 [2021-11-20 23:38:18,907 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 23:38:18,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=169, Invalid=2087, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:38:18,910 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 136 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:18,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 512 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:38:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 23:38:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2021-11-20 23:38:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 57 states have internal predecessors, (63), 35 states have call successors, (35), 10 states have call predecessors, (35), 12 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-20 23:38:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2021-11-20 23:38:18,935 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 62 [2021-11-20 23:38:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:18,935 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2021-11-20 23:38:18,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-20 23:38:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2021-11-20 23:38:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:38:18,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:18,938 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-11-20 23:38:18,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:38:19,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:19,147 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash 815921436, now seen corresponding path program 1 times [2021-11-20 23:38:19,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022670820] [2021-11-20 23:38:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:19,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-20 23:38:19,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:19,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022670820] [2021-11-20 23:38:19,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022670820] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63120490] [2021-11-20 23:38:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:19,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:19,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:19,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca3df9-0863-45c0-bef7-c10f5b550ed0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:38:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:20,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 23:38:20,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:38:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 23:38:21,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:38:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 23:38:22,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63120490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:38:22,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014527032] [2021-11-20 23:38:22,080 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2021-11-20 23:38:22,080 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:38:22,086 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:38:22,093 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:38:22,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:44:49,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:44:49,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 23:51:02,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:51:02,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 23:51:34,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:51:34,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17