./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba --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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- 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-b5237d8 [2022-11-22 02:08:09,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:08:09,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:08:09,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:08:09,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:08:09,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:08:09,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:08:09,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:08:09,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:08:09,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:08:09,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:08:09,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:08:09,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:08:09,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:08:09,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:08:09,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:08:09,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:08:09,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:08:09,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:08:09,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:08:09,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:08:09,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:08:09,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:08:09,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:08:09,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:08:09,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:08:09,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:08:09,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:08:09,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:08:09,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:08:09,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:08:09,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:08:09,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:08:09,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:08:09,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:08:09,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:08:09,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:08:09,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:08:09,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:08:09,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:08:09,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:08:09,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:08:09,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:08:09,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:08:09,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:08:09,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:08:09,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:08:09,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:08:09,177 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:08:09,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:08:09,178 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:08:09,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:08:09,179 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:08:09,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:08:09,179 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:08:09,180 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:08:09,180 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:08:09,180 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:08:09,180 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:08:09,180 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:08:09,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:08:09,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:08:09,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:08:09,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:08:09,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:08:09,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:08:09,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:08:09,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:08:09,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:08:09,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:08:09,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:08:09,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:09,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:08:09,184 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:08:09,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:08:09,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:08:09,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:08:09,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:08:09,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:08:09,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:08:09,186 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_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2022-11-22 02:08:09,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:08:09,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:08:09,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:08:09,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:08:09,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:08:09,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-11-22 02:08:12,715 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:08:13,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:08:13,272 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-11-22 02:08:13,304 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/data/af55c398d/651d4cc788d04ea3875782e683c88c21/FLAG0685adca5 [2022-11-22 02:08:13,318 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/data/af55c398d/651d4cc788d04ea3875782e683c88c21 [2022-11-22 02:08:13,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:08:13,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:08:13,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:13,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:08:13,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:08:13,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:13" (1/1) ... [2022-11-22 02:08:13,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50eaf10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:13, skipping insertion in model container [2022-11-22 02:08:13,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:13" (1/1) ... [2022-11-22 02:08:13,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:08:13,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:08:13,760 WARN L237 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_d1073a12-54ac-40b2-9378-99a0b9e3fffa/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-11-22 02:08:13,768 WARN L237 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_d1073a12-54ac-40b2-9378-99a0b9e3fffa/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-11-22 02:08:14,712 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,713 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,713 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,714 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,715 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,730 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,731 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,733 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:14,734 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,197 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:08:15,198 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:08:15,199 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:08:15,201 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:08:15,202 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:08:15,203 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:08:15,204 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:08:15,204 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:08:15,205 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:08:15,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:08:15,428 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:08:15,519 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,520 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:15,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:08:15,701 WARN L237 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_d1073a12-54ac-40b2-9378-99a0b9e3fffa/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-11-22 02:08:15,702 WARN L237 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_d1073a12-54ac-40b2-9378-99a0b9e3fffa/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-11-22 02:08:15,768 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,769 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,769 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,770 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,770 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,786 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,787 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,788 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,789 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:15,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:08:15,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:08:15,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:08:15,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:08:15,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:08:15,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:08:15,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:08:15,899 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:08:15,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:08:15,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:08:15,936 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:08:16,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:16,014 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:08:16,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:16,337 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:08:16,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16 WrapperNode [2022-11-22 02:08:16,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:16,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:08:16,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:08:16,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:08:16,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,538 INFO L138 Inliner]: procedures = 691, calls = 2655, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 920 [2022-11-22 02:08:16,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:08:16,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:08:16,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:08:16,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:08:16,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:08:16,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:08:16,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:08:16,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:08:16,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (1/1) ... [2022-11-22 02:08:16,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:16,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:08:16,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:08:16,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:08:16,721 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-22 02:08:16,722 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-22 02:08:16,722 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2022-11-22 02:08:16,723 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2022-11-22 02:08:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 02:08:16,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:08:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 02:08:16,724 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 02:08:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:08:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-22 02:08:16,725 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-22 02:08:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:08:16,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:08:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:08:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:08:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-22 02:08:16,726 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-22 02:08:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:08:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:08:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:08:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 02:08:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 02:08:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-22 02:08:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-22 02:08:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:08:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:08:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:08:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:08:16,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:08:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-22 02:08:16,730 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-22 02:08:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:08:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-22 02:08:16,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-22 02:08:16,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:08:17,042 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:08:17,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:08:18,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:08:18,977 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:08:18,977 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:08:18,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:18 BoogieIcfgContainer [2022-11-22 02:08:18,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:08:18,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:08:18,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:08:18,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:08:18,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:08:13" (1/3) ... [2022-11-22 02:08:18,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644fd995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:18, skipping insertion in model container [2022-11-22 02:08:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:16" (2/3) ... [2022-11-22 02:08:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644fd995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:18, skipping insertion in model container [2022-11-22 02:08:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:18" (3/3) ... [2022-11-22 02:08:18,992 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2022-11-22 02:08:19,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:08:19,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:08:19,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:08:19,089 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;@48b3fec2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:08:19,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:08:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-22 02:08:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 02:08:19,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:19,111 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2022-11-22 02:08:19,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:08:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1136460855, now seen corresponding path program 1 times [2022-11-22 02:08:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:08:19,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163541321] [2022-11-22 02:08:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:19,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:08:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-22 02:08:29,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:08:29,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163541321] [2022-11-22 02:08:29,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163541321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:08:29,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839794746] [2022-11-22 02:08:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:29,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:08:29,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:08:29,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:08:29,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:08:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:30,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-22 02:08:30,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:08:30,437 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 [2022-11-22 02:08:30,679 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 02:08:30,684 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 02:08:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-22 02:08:31,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:08:31,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839794746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:08:31,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:08:31,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 30 [2022-11-22 02:08:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087236979] [2022-11-22 02:08:31,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:08:31,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:08:31,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:08:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:08:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-11-22 02:08:31,735 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-22 02:08:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:08:33,290 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2022-11-22 02:08:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:08:33,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2022-11-22 02:08:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:08:33,305 INFO L225 Difference]: With dead ends: 241 [2022-11-22 02:08:33,305 INFO L226 Difference]: Without dead ends: 119 [2022-11-22 02:08:33,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:08:33,322 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 42 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:08:33,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 687 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:08:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-22 02:08:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-22 02:08:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-11-22 02:08:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2022-11-22 02:08:33,404 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 82 [2022-11-22 02:08:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:08:33,405 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2022-11-22 02:08:33,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-22 02:08:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2022-11-22 02:08:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 02:08:33,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:33,413 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:08:33,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:08:33,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 02:08:33,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:08:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:33,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1337259722, now seen corresponding path program 1 times [2022-11-22 02:08:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:08:33,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857354035] [2022-11-22 02:08:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:08:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-22 02:08:40,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:08:40,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857354035] [2022-11-22 02:08:40,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857354035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:08:40,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725618267] [2022-11-22 02:08:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:40,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:08:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:08:40,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:08:40,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1073a12-54ac-40b2-9378-99a0b9e3fffa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:08:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:40,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-22 02:08:40,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:08:40,925 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 [2022-11-22 02:08:41,285 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 [2022-11-22 02:08:42,316 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 30 treesize of output 18 [2022-11-22 02:08:42,321 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 [2022-11-22 02:08:42,332 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 24 [2022-11-22 02:08:42,441 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 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-22 02:08:42,545 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 [2022-11-22 02:08:46,778 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 59 treesize of output 51 [2022-11-22 02:08:46,792 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 51 treesize of output 43 [2022-11-22 02:08:46,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:08:46,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 96 [2022-11-22 02:08:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 58 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 02:08:46,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:08:48,158 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-22 02:09:00,081 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.