./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V --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 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:41:09,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:41:09,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:41:09,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:41:09,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:41:09,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:41:09,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:41:09,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:41:09,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:41:09,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:41:09,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:41:09,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:41:09,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:41:09,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:41:09,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:41:09,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:41:09,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:41:09,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:41:09,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:41:09,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:41:09,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:41:09,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:41:09,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:41:09,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:41:09,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:41:09,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:41:09,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:41:09,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:41:09,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:41:09,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:41:09,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:41:09,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:41:09,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:41:09,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:41:09,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:41:09,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:41:09,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:41:09,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:41:09,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:41:09,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:41:09,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:41:09,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:41:09,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:41:09,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:41:09,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:41:09,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:41:09,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:41:09,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:41:09,531 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:41:09,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:41:09,531 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:41:09,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:41:09,532 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:41:09,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:41:09,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:41:09,532 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:41:09,533 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:41:09,533 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:41:09,533 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:41:09,533 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:41:09,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:41:09,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:41:09,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:41:09,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:41:09,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:41:09,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:41:09,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:41:09,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:41:09,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:41:09,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:41:09,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:41:09,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:09,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:41:09,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:41:09,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:41:09,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:41:09,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:41:09,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:41:09,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:41:09,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:41:09,538 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_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2021-11-23 03:41:09,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:41:09,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:41:09,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:41:09,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:41:09,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:41:09,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-23 03:41:09,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/data/3ac57538a/06b708127e754dc0ac3caeed0626ac49/FLAGdcf53d720 [2021-11-23 03:41:10,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:41:10,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-23 03:41:10,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/data/3ac57538a/06b708127e754dc0ac3caeed0626ac49/FLAGdcf53d720 [2021-11-23 03:41:11,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/data/3ac57538a/06b708127e754dc0ac3caeed0626ac49 [2021-11-23 03:41:11,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:41:11,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:41:11,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:11,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:41:11,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:41:11,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:11" (1/1) ... [2021-11-23 03:41:11,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76fe7773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:11, skipping insertion in model container [2021-11-23 03:41:11,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:11" (1/1) ... [2021-11-23 03:41:11,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:41:11,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:41:11,784 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_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-23 03:41:11,792 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_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-23 03:41:12,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,897 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,900 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,901 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:12,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,370 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:41:13,371 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:41:13,373 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:41:13,374 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:41:13,376 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:41:13,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:41:13,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:41:13,378 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:41:13,379 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:41:13,380 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:41:13,580 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:41:13,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:13,862 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:41:13,876 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_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-23 03:41:13,877 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_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-23 03:41:13,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,944 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:13,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:14,006 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:41:14,010 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:41:14,011 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:41:14,012 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:41:14,014 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:41:14,015 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:41:14,016 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:41:14,016 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:41:14,017 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:41:14,017 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:41:14,054 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:41:14,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:14,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:14,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:14,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:41:14,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:14,570 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:41:14,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14 WrapperNode [2021-11-23 03:41:14,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:14,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:14,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:41:14,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:41:14,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,831 INFO L137 Inliner]: procedures = 695, calls = 3053, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 968 [2021-11-23 03:41:14,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:14,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:41:14,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:41:14,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:41:14,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:14,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:15,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:41:15,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:41:15,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:41:15,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:41:15,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (1/1) ... [2021-11-23 03:41:15,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:15,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:15,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:41:15,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:41:15,101 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-23 03:41:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-23 03:41:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-23 03:41:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-23 03:41:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-23 03:41:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-23 03:41:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:41:15,103 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:41:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:41:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-23 03:41:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:41:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:41:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:41:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:41:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:41:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:41:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:41:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:41:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:41:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:41:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:41:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:41:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:41:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:41:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 03:41:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 03:41:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:41:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:41:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-23 03:41:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-23 03:41:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:41:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:41:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:41:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:41:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-23 03:41:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-23 03:41:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:41:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:41:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:41:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 03:41:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 03:41:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:41:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-23 03:41:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:41:15,429 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:41:15,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:41:17,165 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:41:17,429 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:41:17,429 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:41:17,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:17 BoogieIcfgContainer [2021-11-23 03:41:17,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:41:17,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:41:17,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:41:17,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:41:17,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:11" (1/3) ... [2021-11-23 03:41:17,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bef6a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:17, skipping insertion in model container [2021-11-23 03:41:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:14" (2/3) ... [2021-11-23 03:41:17,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bef6a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:17, skipping insertion in model container [2021-11-23 03:41:17,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:17" (3/3) ... [2021-11-23 03:41:17,447 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2021-11-23 03:41:17,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:41:17,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:41:17,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:41:17,528 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 [2021-11-23 03:41:17,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:41:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 80 states have (on average 1.2375) internal successors, (99), 81 states have internal predecessors, (99), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-23 03:41:17,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 03:41:17,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:17,576 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:17,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1880693210, now seen corresponding path program 1 times [2021-11-23 03:41:17,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:17,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52860704] [2021-11-23 03:41:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:17,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:41:18,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:18,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52860704] [2021-11-23 03:41:18,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52860704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:18,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:18,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:41:18,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943021757] [2021-11-23 03:41:18,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:18,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:41:18,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:41:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:41:18,570 INFO L87 Difference]: Start difference. First operand has 143 states, 80 states have (on average 1.2375) internal successors, (99), 81 states have internal predecessors, (99), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:41:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:19,086 INFO L93 Difference]: Finished difference Result 217 states and 306 transitions. [2021-11-23 03:41:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:41:19,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 46 [2021-11-23 03:41:19,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:19,108 INFO L225 Difference]: With dead ends: 217 [2021-11-23 03:41:19,108 INFO L226 Difference]: Without dead ends: 147 [2021-11-23 03:41:19,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:41:19,123 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 97 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:19,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 731 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:41:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-23 03:41:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-11-23 03:41:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 83 states have internal predecessors, (100), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-23 03:41:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 195 transitions. [2021-11-23 03:41:19,216 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 195 transitions. Word has length 46 [2021-11-23 03:41:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:19,217 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 195 transitions. [2021-11-23 03:41:19,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:41:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 195 transitions. [2021-11-23 03:41:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:41:19,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:19,222 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:19,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:41:19,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash -912045540, now seen corresponding path program 1 times [2021-11-23 03:41:19,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:19,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145191003] [2021-11-23 03:41:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:19,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:41:19,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:19,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145191003] [2021-11-23 03:41:19,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145191003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:19,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:19,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:41:19,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215103165] [2021-11-23 03:41:19,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:19,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:19,463 INFO L87 Difference]: Start difference. First operand 145 states and 195 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-23 03:41:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:19,660 INFO L93 Difference]: Finished difference Result 230 states and 315 transitions. [2021-11-23 03:41:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:41:19,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 48 [2021-11-23 03:41:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:19,664 INFO L225 Difference]: With dead ends: 230 [2021-11-23 03:41:19,665 INFO L226 Difference]: Without dead ends: 192 [2021-11-23 03:41:19,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:19,667 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 22 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:19,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 552 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:41:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-23 03:41:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 177. [2021-11-23 03:41:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 103 states have internal predecessors, (125), 60 states have call successors, (60), 14 states have call predecessors, (60), 14 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-11-23 03:41:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2021-11-23 03:41:19,692 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 48 [2021-11-23 03:41:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:19,693 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2021-11-23 03:41:19,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-23 03:41:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2021-11-23 03:41:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 03:41:19,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:19,696 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 03:41:19,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:41:19,696 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1850518929, now seen corresponding path program 1 times [2021-11-23 03:41:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:19,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215683933] [2021-11-23 03:41:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:19,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:41:20,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215683933] [2021-11-23 03:41:20,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215683933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:20,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:20,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:41:20,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599781928] [2021-11-23 03:41:20,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:20,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:41:20,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:41:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:41:20,011 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 03:41:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:20,848 INFO L93 Difference]: Finished difference Result 190 states and 257 transitions. [2021-11-23 03:41:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:41:20,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 50 [2021-11-23 03:41:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:20,899 INFO L225 Difference]: With dead ends: 190 [2021-11-23 03:41:20,899 INFO L226 Difference]: Without dead ends: 179 [2021-11-23 03:41:20,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:41:20,900 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 124 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:20,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 383 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:41:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-23 03:41:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2021-11-23 03:41:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 103 states have internal predecessors, (124), 60 states have call successors, (60), 14 states have call predecessors, (60), 14 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-11-23 03:41:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 243 transitions. [2021-11-23 03:41:20,940 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 243 transitions. Word has length 50 [2021-11-23 03:41:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:20,942 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 243 transitions. [2021-11-23 03:41:20,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 03:41:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 243 transitions. [2021-11-23 03:41:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:41:20,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:20,949 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 03:41:20,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:41:20,949 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1287098956, now seen corresponding path program 1 times [2021-11-23 03:41:20,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:20,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747419811] [2021-11-23 03:41:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:20,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:41:21,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:21,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747419811] [2021-11-23 03:41:21,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747419811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:21,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:21,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:41:21,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176659791] [2021-11-23 03:41:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:21,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:41:21,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:41:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:41:21,998 INFO L87 Difference]: Start difference. First operand 177 states and 243 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 03:41:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:23,487 INFO L93 Difference]: Finished difference Result 256 states and 361 transitions. [2021-11-23 03:41:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:41:23,487 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 52 [2021-11-23 03:41:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:23,492 INFO L225 Difference]: With dead ends: 256 [2021-11-23 03:41:23,492 INFO L226 Difference]: Without dead ends: 254 [2021-11-23 03:41:23,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:41:23,494 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 205 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:23,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 1561 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 03:41:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-23 03:41:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 213. [2021-11-23 03:41:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 129 states have internal predecessors, (156), 70 states have call successors, (70), 15 states have call predecessors, (70), 15 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-23 03:41:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2021-11-23 03:41:23,575 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 52 [2021-11-23 03:41:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:23,576 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2021-11-23 03:41:23,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-23 03:41:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2021-11-23 03:41:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 03:41:23,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:23,579 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-23 03:41:23,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:41:23,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 816632660, now seen corresponding path program 1 times [2021-11-23 03:41:23,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965431487] [2021-11-23 03:41:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:23,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:41:24,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:24,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965431487] [2021-11-23 03:41:24,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965431487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:24,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:24,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:41:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700863358] [2021-11-23 03:41:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:24,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:41:24,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:41:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:41:24,652 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 14 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-23 03:41:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:26,707 INFO L93 Difference]: Finished difference Result 262 states and 365 transitions. [2021-11-23 03:41:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:41:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 56 [2021-11-23 03:41:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:26,711 INFO L225 Difference]: With dead ends: 262 [2021-11-23 03:41:26,711 INFO L226 Difference]: Without dead ends: 260 [2021-11-23 03:41:26,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:41:26,713 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 268 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:26,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 663 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:41:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-23 03:41:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 189. [2021-11-23 03:41:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 62 states have call successors, (62), 15 states have call predecessors, (62), 15 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-23 03:41:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2021-11-23 03:41:26,766 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 56 [2021-11-23 03:41:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:26,769 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2021-11-23 03:41:26,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-23 03:41:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2021-11-23 03:41:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 03:41:26,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:26,774 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-23 03:41:26,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:41:26,775 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash -832283712, now seen corresponding path program 1 times [2021-11-23 03:41:26,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:26,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924429457] [2021-11-23 03:41:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:26,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:41:28,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:28,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924429457] [2021-11-23 03:41:28,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924429457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:28,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:28,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:41:28,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112784155] [2021-11-23 03:41:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:28,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:41:28,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:41:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:41:28,737 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:41:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:29,406 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2021-11-23 03:41:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:41:29,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 58 [2021-11-23 03:41:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:29,418 INFO L225 Difference]: With dead ends: 268 [2021-11-23 03:41:29,418 INFO L226 Difference]: Without dead ends: 266 [2021-11-23 03:41:29,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:41:29,421 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 125 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:29,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 974 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:41:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-23 03:41:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2021-11-23 03:41:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 137 states have (on average 1.218978102189781) internal successors, (167), 140 states have internal predecessors, (167), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 03:41:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 312 transitions. [2021-11-23 03:41:29,466 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 312 transitions. Word has length 58 [2021-11-23 03:41:29,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:29,467 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 312 transitions. [2021-11-23 03:41:29,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:41:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 312 transitions. [2021-11-23 03:41:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:41:29,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:29,471 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 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] [2021-11-23 03:41:29,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:41:29,472 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1777464992, now seen corresponding path program 1 times [2021-11-23 03:41:29,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:29,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47383466] [2021-11-23 03:41:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:29,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:41:31,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47383466] [2021-11-23 03:41:31,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47383466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:41:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058273410] [2021-11-23 03:41:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:31,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:41:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:31,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:41:32,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a48f594-9705-4fa4-9b78-c7c8c44d4de6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:41:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:32,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2575 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-23 03:41:32,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:33,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 03:41:33,094 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 10 treesize of output 8 [2021-11-23 03:41:33,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:33,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:41:33,167 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:41:33,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 03:41:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:33,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:33,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:33,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:33,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:41:33,359 INFO L354 Elim1Store]: treesize reduction 176, result has 20.4 percent of original size [2021-11-23 03:41:33,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 88 treesize of output 150 [2021-11-23 03:41:34,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:34,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:34,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:41:34,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:34,784 INFO L354 Elim1Store]: treesize reduction 109, result has 9.9 percent of original size [2021-11-23 03:41:34,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 114 treesize of output 78 [2021-11-23 03:41:34,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:34,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:41:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:41:34,966 INFO L354 Elim1Store]: treesize reduction 119, result has 9.2 percent of original size [2021-11-23 03:41:34,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 119 treesize of output 93 [2021-11-23 03:41:39,650 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_buf~0#1.base_BEFORE_CALL_2| Int) (|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int)) (and (not (= |ULTIMATE.start_save_byte_from_array_~storage#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_buf~0#1.base_BEFORE_CALL_2|)) (let ((.cse0 (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base_BEFORE_CALL_4|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_buf~0#1.base_BEFORE_CALL_2|) 16)))) (.cse1 (mod (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 0) 18446744073709551616))) (or (and .cse0 (< 9223372036854775807 .cse1) (exists ((|ULTIMATE.start_save_byte_from_array_~array#1.base| Int) (v_arrayElimIndex_1 Int)) (= (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~array#1.base|) (+ v_arrayElimIndex_1 (- 18446744073709551616))) (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 8)))) (and .cse0 (exists ((|ULTIMATE.start_save_byte_from_array_~array#1.base| Int) (v_arrayElimIndex_1 Int)) (= (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~array#1.base|) v_arrayElimIndex_1) (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 8))) (<= .cse1 9223372036854775807)))))) is different from true [2021-11-23 03:41:49,452 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1| Int) (|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int)) (and (let ((.cse0 (mod (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 0) 18446744073709551616)) (.cse1 (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1| Int)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1|) 16))))) (or (and (exists ((|ULTIMATE.start_save_byte_from_array_~array#1.base| Int) (v_arrayElimIndex_1 Int)) (= (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~array#1.base|) v_arrayElimIndex_1) (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 8))) (<= .cse0 9223372036854775807) .cse1) (and (< 9223372036854775807 .cse0) (exists ((|ULTIMATE.start_save_byte_from_array_~array#1.base| Int) (v_arrayElimIndex_1 Int)) (= (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~array#1.base|) (+ v_arrayElimIndex_1 (- 18446744073709551616))) (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 8))) .cse1))) (not (= |ULTIMATE.start_save_byte_from_array_~storage#1.base| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1|)))) is different from true [2021-11-23 03:41:54,277 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2| Int) (|ULTIMATE.start_save_byte_from_array_~storage#1.base| Int)) (and (let ((.cse1 (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2| Int)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|) 16)))) (.cse0 (mod (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 0) 18446744073709551616))) (or (and (< 9223372036854775807 .cse0) (exists ((|ULTIMATE.start_save_byte_from_array_~array#1.base| Int) (v_arrayElimIndex_1 Int)) (= (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~array#1.base|) (+ v_arrayElimIndex_1 (- 18446744073709551616))) (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 8))) .cse1) (and (exists ((|ULTIMATE.start_save_byte_from_array_~array#1.base| Int) (v_arrayElimIndex_1 Int)) (= (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~array#1.base|) v_arrayElimIndex_1) (select (select |c_#memory_int| |ULTIMATE.start_save_byte_from_array_~storage#1.base|) 8))) .cse1 (<= .cse0 9223372036854775807)))) (not (= |ULTIMATE.start_save_byte_from_array_~storage#1.base| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|)))) is different from true [2021-11-23 03:41:57,028 INFO L354 Elim1Store]: treesize reduction 16, result has 87.4 percent of original size [2021-11-23 03:41:57,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 146