./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:22:51,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:22:51,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:22:51,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:22:51,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:22:51,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:22:51,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:22:51,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:22:51,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:22:51,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:22:51,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:22:51,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:22:51,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:22:51,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:22:51,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:22:51,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:22:51,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:22:51,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:22:51,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:22:51,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:22:51,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:22:51,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:22:51,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:22:51,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:22:51,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:22:51,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:22:51,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:22:51,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:22:51,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:22:51,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:22:51,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:22:51,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:22:51,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:22:51,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:22:51,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:22:51,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:22:51,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:22:51,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:22:51,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:22:51,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:22:51,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:22:51,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:22:51,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:22:51,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:22:51,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:22:51,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:22:51,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:22:51,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:22:51,633 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:22:51,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:22:51,634 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:22:51,634 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:22:51,635 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:22:51,636 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:22:51,636 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:22:51,636 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:22:51,636 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:22:51,637 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:22:51,637 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:22:51,637 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:22:51,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:22:51,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:22:51,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:22:51,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:22:51,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:22:51,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:22:51,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:22:51,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:22:51,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:22:51,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:22:51,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:22:51,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:22:51,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:22:51,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:22:51,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:22:51,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:22:51,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:22:51,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:22:51,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:22:51,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:22:51,644 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_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2021-11-21 00:22:51,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:22:51,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:22:51,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:22:51,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:22:51,960 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:22:51,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2021-11-21 00:22:52,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/data/d427340fd/882a6790c2654a3a94b224c4e5b2804c/FLAGccb605878 [2021-11-21 00:22:53,020 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:22:53,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2021-11-21 00:22:53,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/data/d427340fd/882a6790c2654a3a94b224c4e5b2804c/FLAGccb605878 [2021-11-21 00:22:53,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/data/d427340fd/882a6790c2654a3a94b224c4e5b2804c [2021-11-21 00:22:53,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:22:53,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:22:53,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:22:53,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:22:53,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:22:53,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:22:53" (1/1) ... [2021-11-21 00:22:53,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433f6127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:53, skipping insertion in model container [2021-11-21 00:22:53,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:22:53" (1/1) ... [2021-11-21 00:22:53,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:22:53,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:22:53,896 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_1a974473-ac0e-4dea-a735-5fedf4908aed/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2021-11-21 00:22:53,903 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_1a974473-ac0e-4dea-a735-5fedf4908aed/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2021-11-21 00:22:54,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:54,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:54,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:54,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:54,993 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:55,010 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:55,011 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:55,013 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:55,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:55,473 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:22:55,474 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:22:55,476 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:22:55,477 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:22:55,483 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:22:55,484 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:22:55,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:22:55,486 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:22:55,486 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:22:55,487 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:22:55,789 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:22:55,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:55,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:22:56,101 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:22:56,117 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_1a974473-ac0e-4dea-a735-5fedf4908aed/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2021-11-21 00:22:56,118 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_1a974473-ac0e-4dea-a735-5fedf4908aed/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2021-11-21 00:22:56,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,209 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:22:56,210 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:22:56,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:22:56,212 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:22:56,214 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:22:56,214 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:22:56,215 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:22:56,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:22:56,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:22:56,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:22:56,274 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:22:56,330 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,330 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:22:56,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:22:56,652 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:22:56,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56 WrapperNode [2021-11-21 00:22:56,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:22:56,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:22:56,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:22:56,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:22:56,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:56,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:56,933 INFO L137 Inliner]: procedures = 691, calls = 2677, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 972 [2021-11-21 00:22:56,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:22:56,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:22:56,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:22:56,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:22:56,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:56,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:56,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:56,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:57,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:57,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:57,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:57,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:22:57,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:22:57,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:22:57,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:22:57,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (1/1) ... [2021-11-21 00:22:57,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:22:57,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:22:57,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:22:57,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:22:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-21 00:22:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-21 00:22:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:22:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 00:22:57,210 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 00:22:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:22:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:22:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:22:57,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:22:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:22:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:22:57,212 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-21 00:22:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-21 00:22:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:22:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:22:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:22:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:22:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 00:22:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 00:22:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:22:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:22:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:22:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:22:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:22:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 00:22:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 00:22:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-21 00:22:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-21 00:22:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:22:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-21 00:22:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-21 00:22:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-21 00:22:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-21 00:22:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:22:57,657 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:22:57,659 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:22:59,262 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:22:59,440 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:22:59,441 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 00:22:59,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:59 BoogieIcfgContainer [2021-11-21 00:22:59,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:22:59,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:22:59,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:22:59,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:22:59,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:22:53" (1/3) ... [2021-11-21 00:22:59,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca40a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:59, skipping insertion in model container [2021-11-21 00:22:59,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:22:56" (2/3) ... [2021-11-21 00:22:59,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca40a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:22:59, skipping insertion in model container [2021-11-21 00:22:59,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:22:59" (3/3) ... [2021-11-21 00:22:59,455 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2021-11-21 00:22:59,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:22:59,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:22:59,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:22:59,540 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:22:59,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:22:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-21 00:22:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-21 00:22:59,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:59,580 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:22:59,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:59,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1776087851, now seen corresponding path program 1 times [2021-11-21 00:22:59,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:59,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238673396] [2021-11-21 00:22:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:59,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 00:23:00,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:00,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238673396] [2021-11-21 00:23:00,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238673396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:00,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:00,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:23:00,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363152386] [2021-11-21 00:23:00,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:00,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:23:00,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:23:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:23:00,431 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 00:23:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:00,615 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2021-11-21 00:23:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:23:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2021-11-21 00:23:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:00,635 INFO L225 Difference]: With dead ends: 228 [2021-11-21 00:23:00,635 INFO L226 Difference]: Without dead ends: 138 [2021-11-21 00:23:00,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:23:00,653 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:00,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:23:00,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-21 00:23:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-21 00:23:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-21 00:23:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2021-11-21 00:23:00,753 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2021-11-21 00:23:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:00,755 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2021-11-21 00:23:00,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 00:23:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2021-11-21 00:23:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:23:00,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:00,760 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:00,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:23:00,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:23:00,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1392633959, now seen corresponding path program 1 times [2021-11-21 00:23:00,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288948070] [2021-11-21 00:23:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:00,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-21 00:23:05,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:05,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288948070] [2021-11-21 00:23:05,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288948070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:05,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:05,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-21 00:23:05,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760341713] [2021-11-21 00:23:05,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 00:23:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 00:23:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:23:05,160 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-21 00:23:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:08,510 INFO L93 Difference]: Finished difference Result 210 states and 300 transitions. [2021-11-21 00:23:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:23:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 64 [2021-11-21 00:23:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:08,517 INFO L225 Difference]: With dead ends: 210 [2021-11-21 00:23:08,517 INFO L226 Difference]: Without dead ends: 208 [2021-11-21 00:23:08,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:23:08,519 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 114 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:08,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 2273 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:23:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-21 00:23:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 156. [2021-11-21 00:23:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 83 states have internal predecessors, (95), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-21 00:23:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2021-11-21 00:23:08,580 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 64 [2021-11-21 00:23:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:08,581 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2021-11-21 00:23:08,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-21 00:23:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2021-11-21 00:23:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 00:23:08,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:08,585 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:08,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:23:08,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:23:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash 621632771, now seen corresponding path program 1 times [2021-11-21 00:23:08,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:08,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433423070] [2021-11-21 00:23:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:08,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 00:23:13,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:13,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433423070] [2021-11-21 00:23:13,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433423070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:23:13,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:23:13,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-21 00:23:13,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441931058] [2021-11-21 00:23:13,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:23:13,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 00:23:13,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:23:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 00:23:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:23:13,735 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-21 00:23:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:23:19,258 INFO L93 Difference]: Finished difference Result 282 states and 408 transitions. [2021-11-21 00:23:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:23:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 68 [2021-11-21 00:23:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:23:19,263 INFO L225 Difference]: With dead ends: 282 [2021-11-21 00:23:19,264 INFO L226 Difference]: Without dead ends: 280 [2021-11-21 00:23:19,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:23:19,266 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 143 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:23:19,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 2242 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 00:23:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-21 00:23:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 158. [2021-11-21 00:23:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 82 states have (on average 1.170731707317073) internal successors, (96), 84 states have internal predecessors, (96), 63 states have call successors, (63), 12 states have call predecessors, (63), 12 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-21 00:23:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 221 transitions. [2021-11-21 00:23:19,322 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 221 transitions. Word has length 68 [2021-11-21 00:23:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:23:19,323 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 221 transitions. [2021-11-21 00:23:19,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 16 states have internal predecessors, (26), 9 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-21 00:23:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 221 transitions. [2021-11-21 00:23:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:23:19,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:23:19,335 INFO L514 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:23:19,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:23:19,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:23:19,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:23:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2035128335, now seen corresponding path program 1 times [2021-11-21 00:23:19,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:23:19,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005948397] [2021-11-21 00:23:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:19,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:23:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-21 00:23:26,436 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:26,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005948397] [2021-11-21 00:23:26,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005948397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:23:26,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047164674] [2021-11-21 00:23:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:23:26,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:23:26,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:23:26,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:23:26,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a974473-ac0e-4dea-a735-5fedf4908aed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:24:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:20,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 199 conjunts are in the unsatisfiable core [2021-11-21 00:24:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:20,292 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:24:20,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-21 00:24:21,194 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:24:21,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-11-21 00:24:21,493 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 19 treesize of output 1 [2021-11-21 00:24:21,746 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 27 treesize of output 23 [2021-11-21 00:24:23,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:23,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:23,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2021-11-21 00:24:23,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:23,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2021-11-21 00:24:28,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 60 [2021-11-21 00:24:28,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 48 [2021-11-21 00:24:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,867 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 0 case distinctions, treesize of input 95 treesize of output 68 [2021-11-21 00:24:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 53 [2021-11-21 00:24:28,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:28,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 52 [2021-11-21 00:24:29,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:29,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:29,209 INFO L354 Elim1Store]: treesize reduction 198, result has 17.8 percent of original size [2021-11-21 00:24:29,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 91 treesize of output 113 [2021-11-21 00:24:40,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2021-11-21 00:24:40,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:24:45,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:45,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:45,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:45,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:45,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:45,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:46,014 INFO L354 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2021-11-21 00:24:46,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 274 [2021-11-21 00:24:46,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:46,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:46,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:46,109 INFO L354 Elim1Store]: treesize reduction 164, result has 12.8 percent of original size [2021-11-21 00:24:46,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 271 treesize of output 247 [2021-11-21 00:24:46,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:46,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:46,158 INFO L354 Elim1Store]: treesize reduction 97, result has 8.5 percent of original size [2021-11-21 00:24:46,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 251 treesize of output 219 [2021-11-21 00:24:46,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:46,228 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-11-21 00:24:46,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 232 treesize of output 215 [2021-11-21 00:24:46,287 INFO L354 Elim1Store]: treesize reduction 116, result has 12.8 percent of original size [2021-11-21 00:24:46,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 228 treesize of output 228 [2021-11-21 00:24:51,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:51,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:51,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:51,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:51,453 INFO L354 Elim1Store]: treesize reduction 212, result has 25.6 percent of original size [2021-11-21 00:24:51,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 497 treesize of output 361 [2021-11-21 00:24:51,582 INFO L354 Elim1Store]: treesize reduction 410, result has 8.5 percent of original size [2021-11-21 00:24:51,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 349 treesize of output 308 [2021-11-21 00:24:51,637 INFO L354 Elim1Store]: treesize reduction 63, result has 12.5 percent of original size [2021-11-21 00:24:51,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 278 treesize of output 252 [2021-11-21 00:24:51,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 55 [2021-11-21 00:24:56,382 INFO L354 Elim1Store]: treesize reduction 82, result has 43.4 percent of original size [2021-11-21 00:24:56,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 482 treesize of output 440 [2021-11-21 00:24:58,766 INFO L354 Elim1Store]: treesize reduction 80, result has 52.7 percent of original size [2021-11-21 00:24:58,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 428 treesize of output 412 [2021-11-21 00:24:59,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 592 treesize of output 576 [2021-11-21 00:26:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:26:11,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:26:14,353 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-21 00:33:58,979 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.