./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_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_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/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_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/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_cc45e6d4-6791-41bc-abf9-93dba928cda1/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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:02:05,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:02:05,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:02:05,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:02:05,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:02:05,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:02:05,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:02:05,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:02:05,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:02:05,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:02:05,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:02:05,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:02:05,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:02:05,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:02:05,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:02:05,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:02:05,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:02:05,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:02:05,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:02:05,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:02:05,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:02:05,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:02:05,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:02:05,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:02:05,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:02:05,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:02:05,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:02:05,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:02:05,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:02:05,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:02:05,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:02:05,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:02:05,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:02:05,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:02:05,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:02:05,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:02:05,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:02:05,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:02:05,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:02:05,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:02:05,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:02:05,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:02:05,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:02:05,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:02:05,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:02:05,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:02:05,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:02:05,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:02:05,426 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:02:05,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:02:05,427 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:02:05,427 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:02:05,427 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:02:05,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:02:05,428 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:02:05,428 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:02:05,428 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:02:05,428 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:02:05,429 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:02:05,429 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:02:05,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:02:05,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:02:05,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:02:05,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:02:05,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:02:05,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:02:05,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:02:05,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:02:05,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:02:05,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:02:05,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:02:05,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:02:05,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:02:05,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:02:05,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:02:05,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:02:05,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:02:05,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:02:05,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:02:05,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:02:05,435 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_cc45e6d4-6791-41bc-abf9-93dba928cda1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2021-11-23 03:02:05,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:02:05,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:02:05,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:02:05,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:02:05,724 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:02:05,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2021-11-23 03:02:05,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/data/ffa3841ad/32c5a3bb730349348fa3a72058d268da/FLAG57e4ba4f2 [2021-11-23 03:02:06,696 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:02:06,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2021-11-23 03:02:06,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/data/ffa3841ad/32c5a3bb730349348fa3a72058d268da/FLAG57e4ba4f2 [2021-11-23 03:02:07,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/data/ffa3841ad/32c5a3bb730349348fa3a72058d268da [2021-11-23 03:02:07,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:02:07,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:02:07,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:02:07,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:02:07,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:02:07,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:07" (1/1) ... [2021-11-23 03:02:07,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12146b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:07, skipping insertion in model container [2021-11-23 03:02:07,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:07" (1/1) ... [2021-11-23 03:02:07,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:02:07,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:02:07,750 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_cc45e6d4-6791-41bc-abf9-93dba928cda1/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2021-11-23 03:02:07,760 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_cc45e6d4-6791-41bc-abf9-93dba928cda1/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2021-11-23 03:02:09,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,132 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,608 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:02:09,610 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:02:09,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:02:09,613 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:02:09,616 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:02:09,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:02:09,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:02:09,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:02:09,619 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:02:09,620 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:02:09,819 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:02:09,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:09,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:02:10,156 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:02:10,185 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_cc45e6d4-6791-41bc-abf9-93dba928cda1/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2021-11-23 03:02:10,195 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_cc45e6d4-6791-41bc-abf9-93dba928cda1/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2021-11-23 03:02:10,231 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,232 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,232 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,233 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,233 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,325 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:02:10,326 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:02:10,327 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:02:10,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:02:10,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:02:10,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:02:10,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:02:10,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:02:10,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:02:10,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:02:10,397 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:02:10,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:02:10,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:02:10,896 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:02:10,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10 WrapperNode [2021-11-23 03:02:10,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:02:10,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:02:10,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:02:10,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:02:10,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,164 INFO L137 Inliner]: procedures = 691, calls = 2666, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2021-11-23 03:02:11,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:02:11,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:02:11,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:02:11,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:02:11,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:02:11,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:02:11,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:02:11,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:02:11,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (1/1) ... [2021-11-23 03:02:11,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:02:11,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:11,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:02:11,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:02:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-23 03:02:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-23 03:02:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 03:02:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:02:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:02:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:02:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:02:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:02:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:02:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:02:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:02:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-23 03:02:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-23 03:02:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:02:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-23 03:02:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-23 03:02:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:02:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:02:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:02:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:02:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 03:02:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 03:02:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:02:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:02:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:02:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:02:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-23 03:02:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-23 03:02:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:02:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:02:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:02:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 03:02:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 03:02:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-23 03:02:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-23 03:02:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:02:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-11-23 03:02:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-11-23 03:02:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:02:11,783 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:02:11,785 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:02:13,616 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:02:13,785 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:02:13,785 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:02:13,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:13 BoogieIcfgContainer [2021-11-23 03:02:13,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:02:13,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:02:13,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:02:13,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:02:13,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:07" (1/3) ... [2021-11-23 03:02:13,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c40986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:13, skipping insertion in model container [2021-11-23 03:02:13,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:10" (2/3) ... [2021-11-23 03:02:13,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c40986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:13, skipping insertion in model container [2021-11-23 03:02:13,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:13" (3/3) ... [2021-11-23 03:02:13,802 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2021-11-23 03:02:13,808 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:02:13,808 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:02:13,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:02:13,885 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 03:02:13,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:02:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-23 03:02:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:02:13,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:13,925 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:13,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1989659951, now seen corresponding path program 1 times [2021-11-23 03:02:13,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:13,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420464258] [2021-11-23 03:02:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:13,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-23 03:02:22,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420464258] [2021-11-23 03:02:22,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420464258] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:02:22,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029244684] [2021-11-23 03:02:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:22,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:02:22,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:22,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:02:22,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc45e6d4-6791-41bc-abf9-93dba928cda1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:02:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:23,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-23 03:02:23,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:02:23,250 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 03:02:23,790 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 [2021-11-23 03:02:23,800 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 18 treesize of output 14 [2021-11-23 03:02:27,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 60 treesize of output 42 [2021-11-23 03:02:27,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,118 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 42 treesize of output 27 [2021-11-23 03:02:27,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-23 03:02:27,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,139 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 57 treesize of output 48 [2021-11-23 03:02:27,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:02:27,159 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 42 treesize of output 36 [2021-11-23 03:02:27,354 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 03:02:27,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 25 [2021-11-23 03:02:27,361 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 12 treesize of output 8 [2021-11-23 03:02:38,876 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-23 03:02:38,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 262 treesize of output 254 [2021-11-23 03:02:38,887 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 254 treesize of output 238 [2021-11-23 03:02:39,024 INFO L354 Elim1Store]: treesize reduction 32, result has 67.0 percent of original size [2021-11-23 03:02:39,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 238 treesize of output 222 [2021-11-23 03:02:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:02:40,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:02:42,592 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-23 03:11:27,323 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.