./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7 --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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:44:03,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:44:03,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:44:03,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:44:03,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:44:03,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:44:03,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:44:03,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:44:03,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:44:03,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:44:03,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:44:03,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:44:03,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:44:03,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:44:03,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:44:03,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:44:03,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:44:03,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:44:03,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:44:03,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:44:03,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:44:03,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:44:03,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:44:03,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:44:03,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:44:03,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:44:03,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:44:03,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:44:03,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:44:03,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:44:03,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:44:03,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:44:03,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:44:03,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:44:03,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:44:03,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:44:03,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:44:03,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:44:03,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:44:03,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:44:03,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:44:03,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:44:03,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:44:03,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:44:03,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:44:03,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:44:03,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:44:03,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:44:03,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:44:03,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:44:03,330 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:44:03,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:44:03,331 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:44:03,332 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:44:03,332 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:44:03,332 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:44:03,332 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:44:03,333 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:44:03,333 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:44:03,333 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:44:03,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:44:03,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:44:03,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:44:03,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:44:03,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:44:03,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:44:03,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:44:03,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:44:03,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:44:03,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:44:03,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:44:03,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:44:03,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:44:03,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:44:03,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:44:03,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:44:03,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:44:03,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:44:03,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:44:03,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:44:03,340 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_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-25 19:44:03,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:44:03,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:44:03,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:44:03,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:44:03,627 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:44:03,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-25 19:44:03,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/data/9f4397bda/51f5ba05944f4f8ea918c0ec20bb01d7/FLAGc756cf2ee [2021-11-25 19:44:04,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:44:04,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-25 19:44:04,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/data/9f4397bda/51f5ba05944f4f8ea918c0ec20bb01d7/FLAGc756cf2ee [2021-11-25 19:44:05,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/data/9f4397bda/51f5ba05944f4f8ea918c0ec20bb01d7 [2021-11-25 19:44:05,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:44:05,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:44:05,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:44:05,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:44:05,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:44:05,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:44:05" (1/1) ... [2021-11-25 19:44:05,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f1cce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:05, skipping insertion in model container [2021-11-25 19:44:05,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:44:05" (1/1) ... [2021-11-25 19:44:05,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:44:05,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:44:05,715 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_ef3a1f9f-6bae-4891-8063-bec23ec881ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-25 19:44:05,723 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_ef3a1f9f-6bae-4891-8063-bec23ec881ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-25 19:44:06,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,783 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,784 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,785 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,812 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:06,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:44:07,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:44:07,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:44:07,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:44:07,228 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:44:07,229 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:44:07,230 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:44:07,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:44:07,231 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:44:07,232 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:44:07,393 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:44:07,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:44:07,684 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:44:07,709 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_ef3a1f9f-6bae-4891-8063-bec23ec881ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-25 19:44:07,709 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_ef3a1f9f-6bae-4891-8063-bec23ec881ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-25 19:44:07,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,766 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,766 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,786 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,786 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:07,882 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:44:07,883 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:44:07,883 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:44:07,884 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:44:07,885 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:44:07,886 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:44:07,886 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:44:07,887 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:44:07,887 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:44:07,888 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:44:07,927 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:44:08,013 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:08,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:44:08,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:44:08,303 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:44:08,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08 WrapperNode [2021-11-25 19:44:08,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:44:08,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:44:08,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:44:08,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:44:08,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,564 INFO L137 Inliner]: procedures = 691, calls = 2651, calls flagged for inlining = 65, calls inlined = 11, statements flattened = 934 [2021-11-25 19:44:08,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:44:08,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:44:08,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:44:08,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:44:08,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:44:08,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:44:08,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:44:08,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:44:08,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (1/1) ... [2021-11-25 19:44:08,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:44:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:08,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:44:08,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:44:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 19:44:08,801 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 19:44:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 19:44:08,802 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 19:44:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 19:44:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:44:08,803 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 19:44:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 19:44:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:44:08,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:44:08,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:44:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:44:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:44:08,805 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-25 19:44:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-25 19:44:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:44:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:44:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:44:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:44:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:44:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 19:44:08,807 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 19:44:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:44:08,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:44:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:44:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:44:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-25 19:44:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-25 19:44:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:44:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 19:44:08,834 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 19:44:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:44:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:44:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:44:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:44:09,181 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:44:09,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:44:10,624 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:44:10,867 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:44:10,868 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:44:10,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:44:10 BoogieIcfgContainer [2021-11-25 19:44:10,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:44:10,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:44:10,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:44:10,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:44:10,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:44:05" (1/3) ... [2021-11-25 19:44:10,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3750630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:44:10, skipping insertion in model container [2021-11-25 19:44:10,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:08" (2/3) ... [2021-11-25 19:44:10,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3750630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:44:10, skipping insertion in model container [2021-11-25 19:44:10,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:44:10" (3/3) ... [2021-11-25 19:44:10,882 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-25 19:44:10,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:44:10,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:44:10,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:44:10,961 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 [2021-11-25 19:44:10,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:44:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 63 states have internal predecessors, (74), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-25 19:44:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 19:44:10,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:10,998 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:10,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash 45101985, now seen corresponding path program 1 times [2021-11-25 19:44:11,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:11,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162218246] [2021-11-25 19:44:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:11,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-25 19:44:14,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:14,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162218246] [2021-11-25 19:44:14,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162218246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:44:14,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619505880] [2021-11-25 19:44:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:14,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:14,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:14,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef3a1f9f-6bae-4891-8063-bec23ec881ac/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:44:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:15,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 136 conjunts are in the unsatisfiable core [2021-11-25 19:44:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:15,676 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 13 treesize of output 9 [2021-11-25 19:44:15,686 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 13 treesize of output 9 [2021-11-25 19:44:17,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:17,505 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:44:17,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 7 [2021-11-25 19:44:17,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:17,516 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:44:17,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 7 [2021-11-25 19:44:18,454 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:44:18,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 22 [2021-11-25 19:44:18,464 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 7 treesize of output 5 [2021-11-25 19:44:18,746 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:44:18,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 26 [2021-11-25 19:44:18,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:44:19,872 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 13 treesize of output 9 [2021-11-25 19:44:19,878 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 8 treesize of output 4 [2021-11-25 19:44:20,026 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 20 treesize of output 8 [2021-11-25 19:44:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 57 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:44:23,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:44:24,501 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-25 19:44:41,112 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.