./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/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_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:31:23,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:31:23,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:31:23,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:31:23,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:31:23,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:31:23,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:31:23,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:31:23,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:31:23,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:31:23,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:31:23,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:31:23,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:31:23,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:31:23,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:31:23,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:31:23,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:31:23,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:31:23,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:31:23,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:31:23,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:31:23,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:31:23,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:31:23,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:31:23,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:31:23,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:31:23,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:31:23,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:31:23,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:31:23,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:31:23,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:31:23,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:31:23,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:31:23,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:31:23,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:31:23,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:31:23,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:31:23,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:31:23,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:31:23,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:31:23,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:31:23,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:31:23,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:31:23,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:31:23,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:31:23,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:31:23,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:31:23,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:31:23,764 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:31:23,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:31:23,765 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:31:23,765 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:31:23,766 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:31:23,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:31:23,766 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:31:23,767 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:31:23,767 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:31:23,767 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:31:23,767 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:31:23,768 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:31:23,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:31:23,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:31:23,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:31:23,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:31:23,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:31:23,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:31:23,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:31:23,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:31:23,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:31:23,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:31:23,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:31:23,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:23,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:31:23,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:31:23,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:31:23,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:31:23,774 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:31:23,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:31:23,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:31:23,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:31:23,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2022-11-19 07:31:24,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:31:24,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:31:24,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:31:24,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:31:24,143 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:31:24,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2022-11-19 07:31:24,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/data/baa67c53f/ada71c4f9ff5445fbf9ac2f17bd40836/FLAGc0455340e [2022-11-19 07:31:25,128 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:31:25,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2022-11-19 07:31:25,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/data/baa67c53f/ada71c4f9ff5445fbf9ac2f17bd40836/FLAGc0455340e [2022-11-19 07:31:25,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/data/baa67c53f/ada71c4f9ff5445fbf9ac2f17bd40836 [2022-11-19 07:31:25,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:31:25,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:31:25,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:25,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:31:25,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:31:25,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:25" (1/1) ... [2022-11-19 07:31:25,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457ca5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:25, skipping insertion in model container [2022-11-19 07:31:25,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:25" (1/1) ... [2022-11-19 07:31:25,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:31:25,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:31:26,095 WARN L234 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_51a053c6-9675-49b2-9703-750c37ed73e7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2022-11-19 07:31:26,104 WARN L234 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_51a053c6-9675-49b2-9703-750c37ed73e7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2022-11-19 07:31:27,155 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,156 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,157 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,158 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,159 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,174 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,175 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,176 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,177 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:27,689 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:31:27,690 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:31:27,692 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:31:27,693 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:31:27,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:31:27,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:31:27,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:31:27,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:31:27,706 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:31:27,708 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:31:27,970 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:31:28,072 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,072 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:31:28,210 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:31:28,239 WARN L234 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_51a053c6-9675-49b2-9703-750c37ed73e7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2022-11-19 07:31:28,240 WARN L234 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_51a053c6-9675-49b2-9703-750c37ed73e7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2022-11-19 07:31:28,301 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,302 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,302 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,303 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,303 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,316 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,316 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,318 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,318 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:31:28,377 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:31:28,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:31:28,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:31:28,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:31:28,380 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:31:28,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:31:28,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:31:28,382 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:31:28,385 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:31:28,419 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:31:28,500 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,500 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:31:28,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:31:28,882 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:31:28,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28 WrapperNode [2022-11-19 07:31:28,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:28,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:31:28,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:31:28,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:31:28,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,102 INFO L138 Inliner]: procedures = 691, calls = 2650, calls flagged for inlining = 65, calls inlined = 11, statements flattened = 933 [2022-11-19 07:31:29,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:31:29,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:31:29,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:31:29,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:31:29,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,203 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:31:29,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:31:29,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:31:29,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:31:29,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (1/1) ... [2022-11-19 07:31:29,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:29,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:31:29,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:31:29,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:31:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-19 07:31:29,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-19 07:31:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 07:31:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 07:31:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:31:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:31:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 07:31:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 07:31:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:31:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:31:29,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:31:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:31:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:31:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-19 07:31:29,325 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-19 07:31:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:31:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:31:29,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:31:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 07:31:29,327 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 07:31:29,327 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-19 07:31:29,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-19 07:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:31:29,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:31:29,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:31:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:31:29,329 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-11-19 07:31:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-11-19 07:31:29,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:31:29,330 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-19 07:31:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-19 07:31:29,330 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 07:31:29,331 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 07:31:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:31:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:31:29,717 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:31:29,719 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:31:31,167 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:31:31,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:31:31,492 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:31:31,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:31 BoogieIcfgContainer [2022-11-19 07:31:31,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:31:31,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:31:31,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:31:31,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:31:31,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:31:25" (1/3) ... [2022-11-19 07:31:31,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e455427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:31:31, skipping insertion in model container [2022-11-19 07:31:31,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:28" (2/3) ... [2022-11-19 07:31:31,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e455427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:31:31, skipping insertion in model container [2022-11-19 07:31:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:31" (3/3) ... [2022-11-19 07:31:31,505 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2022-11-19 07:31:31,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:31:31,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:31:31,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:31:31,618 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b5bbfc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:31:31,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:31:31,627 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) [2022-11-19 07:31:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 07:31:31,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:31,639 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:31:31,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:31,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash 45101985, now seen corresponding path program 1 times [2022-11-19 07:31:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21569739] [2022-11-19 07:31:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-19 07:31:45,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:45,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21569739] [2022-11-19 07:31:45,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21569739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:31:45,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100804846] [2022-11-19 07:31:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:45,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:31:45,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:31:45,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:31:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51a053c6-9675-49b2-9703-750c37ed73e7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:31:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 142 conjunts are in the unsatisfiable core [2022-11-19 07:31:46,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:31:46,895 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:31:47,262 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:31:47,274 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:31:49,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:49,005 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:31:49,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-11-19 07:31:49,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:31:49,021 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:31:49,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-11-19 07:31:50,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-19 07:31:50,511 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-19 07:31:50,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-19 07:31:51,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-19 07:31:51,343 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 5 [2022-11-19 07:31:51,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-19 07:31:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 53 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:31:56,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:31:57,342 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-19 07:32:13,154 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.