./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:31:06,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:31:06,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:31:06,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:31:06,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:31:06,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:31:06,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:31:06,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:31:06,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:31:06,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:31:06,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:31:06,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:31:06,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:31:06,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:31:06,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:31:06,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:31:06,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:31:06,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:31:06,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:31:06,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:31:06,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:31:06,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:31:06,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:31:06,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:31:06,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:31:06,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:31:06,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:31:06,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:31:06,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:31:06,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:31:06,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:31:06,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:31:06,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:31:06,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:31:06,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:31:06,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:31:06,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:31:06,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:31:06,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:31:06,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:31:06,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:31:06,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:31:06,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:31:06,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:31:06,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:31:06,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:31:06,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:31:06,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:31:06,244 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:31:06,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:31:06,244 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:31:06,244 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:31:06,246 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:31:06,246 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:31:06,246 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:31:06,247 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:31:06,247 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:31:06,247 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:31:06,248 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:31:06,248 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:31:06,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:31:06,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:31:06,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:31:06,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:31:06,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:31:06,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:31:06,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:31:06,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:31:06,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:31:06,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:31:06,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:31:06,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:31:06,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:31:06,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:31:06,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:31:06,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:31:06,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:31:06,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:31:06,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:31:06,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:31:06,256 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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2021-11-21 01:31:06,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:31:06,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:31:06,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:31:06,615 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:31:06,616 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:31:06,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2021-11-21 01:31:06,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/data/78213c87b/5f7ad5f97e664314aa18893171bb7c7b/FLAGab3faa69d [2021-11-21 01:31:07,750 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:31:07,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2021-11-21 01:31:07,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/data/78213c87b/5f7ad5f97e664314aa18893171bb7c7b/FLAGab3faa69d [2021-11-21 01:31:08,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/data/78213c87b/5f7ad5f97e664314aa18893171bb7c7b [2021-11-21 01:31:08,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:31:08,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:31:08,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:31:08,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:31:08,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:31:08,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:31:08" (1/1) ... [2021-11-21 01:31:08,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c2bbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:08, skipping insertion in model container [2021-11-21 01:31:08,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:31:08" (1/1) ... [2021-11-21 01:31:08,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:31:08,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:31:08,718 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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2021-11-21 01:31:08,727 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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2021-11-21 01:31:10,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,138 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,608 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:31:10,609 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:31:10,610 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:31:10,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:31:10,614 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:31:10,615 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:31:10,616 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:31:10,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:31:10,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:31:10,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:31:10,822 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:31:10,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:10,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:31:11,211 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:31:11,240 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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2021-11-21 01:31:11,240 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_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2021-11-21 01:31:11,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,318 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,328 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,329 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:31:11,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:31:11,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:31:11,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:31:11,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:31:11,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:31:11,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:31:11,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:31:11,402 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:31:11,405 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:31:11,433 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:31:11,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:31:11,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:31:11,990 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:31:11,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11 WrapperNode [2021-11-21 01:31:11,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:31:11,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:31:11,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:31:11,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:31:12,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,309 INFO L137 Inliner]: procedures = 691, calls = 2666, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2021-11-21 01:31:12,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:31:12,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:31:12,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:31:12,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:31:12,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:31:12,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:31:12,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:31:12,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:31:12,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (1/1) ... [2021-11-21 01:31:12,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:31:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:12,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:31:12,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:31:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-21 01:31:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-21 01:31:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:31:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:31:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:31:12,608 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:31:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:31:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:31:12,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:31:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:31:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:31:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-21 01:31:12,611 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-21 01:31:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:31:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-21 01:31:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-21 01:31:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:31:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:31:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:31:12,613 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:31:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 01:31:12,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 01:31:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:31:12,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:31:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:31:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:31:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-21 01:31:12,616 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-21 01:31:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:31:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 01:31:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 01:31:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-21 01:31:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-21 01:31:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-21 01:31:12,618 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-21 01:31:12,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:31:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-11-21 01:31:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-11-21 01:31:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:31:13,037 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:31:13,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:31:14,798 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:31:14,977 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:31:14,978 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:31:14,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:31:14 BoogieIcfgContainer [2021-11-21 01:31:14,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:31:14,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:31:14,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:31:14,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:31:14,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:31:08" (1/3) ... [2021-11-21 01:31:14,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd1cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:31:14, skipping insertion in model container [2021-11-21 01:31:14,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:11" (2/3) ... [2021-11-21 01:31:14,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd1cb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:31:14, skipping insertion in model container [2021-11-21 01:31:14,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:31:14" (3/3) ... [2021-11-21 01:31:14,993 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2021-11-21 01:31:15,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:31:15,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:31:15,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:31:15,111 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:31:15,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:31:15,144 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) [2021-11-21 01:31:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:31:15,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:15,160 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] [2021-11-21 01:31:15,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1989659951, now seen corresponding path program 1 times [2021-11-21 01:31:15,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:15,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590588391] [2021-11-21 01:31:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:15,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-21 01:31:25,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590588391] [2021-11-21 01:31:25,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590588391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:25,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860078866] [2021-11-21 01:31:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:25,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:25,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:25,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e61535e-ae18-4a4d-acec-9c5ea7ae580e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:31:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-21 01:31:25,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:26,065 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 [2021-11-21 01:31:26,694 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 01:31:26,699 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 [2021-11-21 01:31:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,461 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 [2021-11-21 01:31:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,470 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 [2021-11-21 01:31:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,478 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 [2021-11-21 01:31:30,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,494 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 [2021-11-21 01:31:30,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,517 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 [2021-11-21 01:31:30,739 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:31:30,739 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 [2021-11-21 01:31:30,749 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 [2021-11-21 01:31:44,610 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-21 01:31:44,611 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 [2021-11-21 01:31:44,623 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 [2021-11-21 01:31:44,780 INFO L354 Elim1Store]: treesize reduction 32, result has 67.0 percent of original size [2021-11-21 01:31:44,781 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 [2021-11-21 01:31:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:31:46,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:48,635 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-21 01:40:48,137 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.