./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF --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 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:40:43,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:40:43,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:40:43,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:40:43,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:40:43,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:40:43,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:40:43,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:40:43,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:40:43,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:40:43,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:40:43,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:40:43,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:40:43,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:40:43,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:40:43,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:40:43,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:40:43,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:40:43,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:40:43,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:40:43,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:40:43,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:40:43,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:40:43,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:40:43,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:40:43,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:40:43,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:40:43,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:40:43,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:40:43,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:40:43,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:40:43,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:40:43,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:40:43,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:40:43,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:40:43,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:40:43,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:40:43,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:40:43,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:40:43,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:40:43,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:40:43,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:40:43,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:40:43,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:40:43,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:40:43,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:40:43,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:40:43,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:40:43,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:40:43,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:40:43,694 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:40:43,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:40:43,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:40:43,695 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:40:43,696 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:40:43,696 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:40:43,696 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:40:43,696 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:40:43,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:40:43,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:40:43,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:40:43,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:40:43,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:40:43,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:40:43,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:40:43,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:40:43,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:40:43,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:40:43,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:40:43,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:40:43,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:43,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:40:43,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:40:43,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:40:43,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:40:43,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:40:43,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:40:43,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:40:43,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:40:43,703 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-11-12 23:40:44,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:40:44,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:40:44,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:40:44,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:40:44,051 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:40:44,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-12 23:40:44,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/aa999c291/61db7b0669fb4591856e3242e6a6aa36/FLAG92ffc93e3 [2021-11-12 23:40:45,134 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:40:45,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-12 23:40:45,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/aa999c291/61db7b0669fb4591856e3242e6a6aa36/FLAG92ffc93e3 [2021-11-12 23:40:45,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/aa999c291/61db7b0669fb4591856e3242e6a6aa36 [2021-11-12 23:40:45,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:40:45,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:40:45,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:45,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:40:45,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:40:45,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:45" (1/1) ... [2021-11-12 23:40:45,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46eb2613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:45, skipping insertion in model container [2021-11-12 23:40:45,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:45" (1/1) ... [2021-11-12 23:40:45,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:40:45,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:40:46,039 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-12 23:40:46,047 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-12 23:40:46,077 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:40:46,085 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:40:47,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:47,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:40:47,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:40:47,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:40:47,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:40:47,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:40:47,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:40:47,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:40:47,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:40:47,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:40:47,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:40:47,950 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:40:48,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:48,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:48,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:48,405 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:40:48,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78901ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:48, skipping insertion in model container [2021-11-12 23:40:48,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:48,408 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:40:48,411 INFO L158 Benchmark]: Toolchain (without parser) took 2875.90ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 58.2MB in the beginning and 91.1MB in the end (delta: -32.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2021-11-12 23:40:48,412 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory was 53.3MB in the beginning and 53.3MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:48,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2872.80ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 58.0MB in the beginning and 91.1MB in the end (delta: -33.0MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2021-11-12 23:40:48,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory was 53.3MB in the beginning and 53.3MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2872.80ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 58.0MB in the beginning and 91.1MB in the end (delta: -33.0MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF --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 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:40:51,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:40:51,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:40:51,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:40:51,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:40:51,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:40:51,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:40:51,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:40:51,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:40:51,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:40:51,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:40:51,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:40:51,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:40:51,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:40:51,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:40:51,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:40:51,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:40:51,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:40:51,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:40:51,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:40:51,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:40:51,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:40:51,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:40:51,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:40:51,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:40:51,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:40:51,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:40:51,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:40:51,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:40:51,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:40:51,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:40:51,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:40:51,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:40:51,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:40:51,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:40:51,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:40:51,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:40:51,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:40:51,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:40:51,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:40:51,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:40:51,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:40:51,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:40:51,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:40:51,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:40:51,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:40:51,287 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:40:51,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:40:51,288 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:40:51,288 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:40:51,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:40:51,288 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:40:51,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:40:51,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:40:51,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:40:51,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:40:51,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:40:51,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:40:51,293 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:40:51,293 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:40:51,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:40:51,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:40:51,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:40:51,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:40:51,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:40:51,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:40:51,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:51,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:40:51,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:40:51,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:40:51,296 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:40:51,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:51,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:40:51,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:40:51,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:40:51,298 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-11-12 23:40:51,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:40:51,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:40:51,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:40:51,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:40:51,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:40:51,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-12 23:40:51,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/37d2d07de/ed470f96b4974f33a89c5b133f7d2209/FLAG1542c125f [2021-11-12 23:40:53,013 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:40:53,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-12 23:40:53,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/37d2d07de/ed470f96b4974f33a89c5b133f7d2209/FLAG1542c125f [2021-11-12 23:40:53,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/data/37d2d07de/ed470f96b4974f33a89c5b133f7d2209 [2021-11-12 23:40:53,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:40:53,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:40:53,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:53,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:40:53,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:40:53,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:53" (1/1) ... [2021-11-12 23:40:53,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ddcdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:53, skipping insertion in model container [2021-11-12 23:40:53,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:40:53" (1/1) ... [2021-11-12 23:40:53,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:40:53,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:40:53,999 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-12 23:40:54,008 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-12 23:40:54,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:40:54,042 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:40:55,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,314 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:55,318 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,075 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:40:56,076 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:40:56,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:40:56,079 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:40:56,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:40:56,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:40:56,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:40:56,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:40:56,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:40:56,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:40:56,375 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:40:56,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:56,808 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:40:56,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:40:56,865 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-12 23:40:56,866 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-12 23:40:56,868 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:40:56,868 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:40:56,904 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:56,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:40:56,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:40:56,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:40:56,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:40:56,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:40:56,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:40:56,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:40:56,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:40:56,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:40:56,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:40:57,016 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:40:57,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:57,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:40:57,267 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-12 23:40:57,268 WARN L228 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_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-12 23:40:57,269 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:40:57,270 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:40:57,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,334 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:40:57,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:40:57,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:40:57,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:40:57,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:40:57,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:40:57,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:40:57,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:40:57,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:40:57,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:40:57,447 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:40:57,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:40:57,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:40:57,893 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:40:57,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57 WrapperNode [2021-11-12 23:40:57,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:40:57,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:40:57,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:40:57,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:40:57,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:40:58,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:40:58,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:40:58,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:40:58,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:40:58,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:40:58,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:40:58,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:40:58,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (1/1) ... [2021-11-12 23:40:58,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:40:58,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:58,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:40:58,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:40:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 23:40:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 23:40:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:40:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:40:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:40:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:40:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:40:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-12 23:40:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-12 23:40:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:40:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:40:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:40:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-12 23:40:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-12 23:40:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:40:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:40:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:40:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:40:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:40:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:40:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:40:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:40:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:40:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:40:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:40:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:40:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:40:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:40:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:40:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:40:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-12 23:40:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-12 23:40:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2021-11-12 23:40:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2021-11-12 23:41:13,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:41:13,593 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:41:13,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:41:13 BoogieIcfgContainer [2021-11-12 23:41:13,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:41:13,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:41:13,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:41:13,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:41:13,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:40:53" (1/3) ... [2021-11-12 23:41:13,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:41:13, skipping insertion in model container [2021-11-12 23:41:13,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:40:57" (2/3) ... [2021-11-12 23:41:13,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:41:13, skipping insertion in model container [2021-11-12 23:41:13,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:41:13" (3/3) ... [2021-11-12 23:41:13,617 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2021-11-12 23:41:13,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:41:13,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:41:13,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:41:13,689 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:41:13,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:41:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-12 23:41:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 23:41:13,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:13,721 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2021-11-12 23:41:13,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash -980626028, now seen corresponding path program 1 times [2021-11-12 23:41:13,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:13,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414397443] [2021-11-12 23:41:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:13,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:13,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:13,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:41:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:41:18,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-12 23:41:19,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 23:41:19,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:19,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414397443] [2021-11-12 23:41:19,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414397443] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:41:19,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:41:19,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:41:19,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023859305] [2021-11-12 23:41:19,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:19,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:41:19,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:41:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:41:19,657 INFO L87 Difference]: Start difference. First operand has 131 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:41:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:19,729 INFO L93 Difference]: Finished difference Result 258 states and 383 transitions. [2021-11-12 23:41:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:41:19,733 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2021-11-12 23:41:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:19,754 INFO L225 Difference]: With dead ends: 258 [2021-11-12 23:41:19,754 INFO L226 Difference]: Without dead ends: 125 [2021-11-12 23:41:19,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:41:19,770 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:19,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:41:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-12 23:41:19,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-12 23:41:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 74 states have internal predecessors, (90), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-12 23:41:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2021-11-12 23:41:19,864 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 95 [2021-11-12 23:41:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:19,866 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2021-11-12 23:41:19,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:41:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2021-11-12 23:41:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 23:41:19,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:19,882 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2021-11-12 23:41:19,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:41:20,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:20,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:20,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash 112336798, now seen corresponding path program 1 times [2021-11-12 23:41:20,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:20,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866555271] [2021-11-12 23:41:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:20,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:20,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:20,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:20,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:41:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:25,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:41:25,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 23:41:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:41:26,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:26,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866555271] [2021-11-12 23:41:26,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866555271] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:41:26,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:41:26,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:41:26,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507817641] [2021-11-12 23:41:26,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:26,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:41:26,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:41:26,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:41:26,072 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-12 23:41:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:26,975 INFO L93 Difference]: Finished difference Result 246 states and 343 transitions. [2021-11-12 23:41:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:41:26,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2021-11-12 23:41:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:26,980 INFO L225 Difference]: With dead ends: 246 [2021-11-12 23:41:26,981 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:41:26,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:41:26,983 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 34 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 793.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 858.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:26,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 553 Invalid, 74 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 858.29ms Time] [2021-11-12 23:41:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:41:27,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:41:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-12 23:41:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 181 transitions. [2021-11-12 23:41:27,009 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 181 transitions. Word has length 95 [2021-11-12 23:41:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:27,010 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 181 transitions. [2021-11-12 23:41:27,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-12 23:41:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 181 transitions. [2021-11-12 23:41:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 23:41:27,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:27,013 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2021-11-12 23:41:27,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:41:27,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:27,227 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1452584935, now seen corresponding path program 1 times [2021-11-12 23:41:27,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:27,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798000773] [2021-11-12 23:41:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:27,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:27,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:27,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:41:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:32,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:41:32,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:41:32,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:41:33,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:33,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798000773] [2021-11-12 23:41:33,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798000773] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:41:33,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:41:33,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-12 23:41:33,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474839761] [2021-11-12 23:41:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:33,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:41:33,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:41:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:41:33,358 INFO L87 Difference]: Start difference. First operand 128 states and 181 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:41:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:34,314 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-11-12 23:41:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:41:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2021-11-12 23:41:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:34,320 INFO L225 Difference]: With dead ends: 206 [2021-11-12 23:41:34,320 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 23:41:34,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:41:34,322 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 66 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 777.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.89ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 898.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:34,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 132 Unknown, 0 Unchecked, 8.89ms Time], IncrementalHoareTripleChecker [35 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 898.14ms Time] [2021-11-12 23:41:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 23:41:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 23:41:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-12 23:41:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 178 transitions. [2021-11-12 23:41:34,346 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 178 transitions. Word has length 97 [2021-11-12 23:41:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:34,347 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 178 transitions. [2021-11-12 23:41:34,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:41:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 178 transitions. [2021-11-12 23:41:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 23:41:34,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:34,351 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 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] [2021-11-12 23:41:34,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:41:34,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:34,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2014938503, now seen corresponding path program 2 times [2021-11-12 23:41:34,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:34,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644717087] [2021-11-12 23:41:34,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:41:34,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:34,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:34,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:34,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:41:38,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 23:41:38,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:41:38,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:41:38,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:41:39,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:41:39,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:39,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644717087] [2021-11-12 23:41:39,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644717087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:41:39,922 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:41:39,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-12 23:41:39,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794686219] [2021-11-12 23:41:39,923 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:39,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:41:39,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:41:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:41:39,925 INFO L87 Difference]: Start difference. First operand 128 states and 178 transitions. Second operand has 12 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:41:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:40,243 INFO L93 Difference]: Finished difference Result 140 states and 199 transitions. [2021-11-12 23:41:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:41:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2021-11-12 23:41:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:40,248 INFO L225 Difference]: With dead ends: 140 [2021-11-12 23:41:40,248 INFO L226 Difference]: Without dead ends: 138 [2021-11-12 23:41:40,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:41:40,250 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 19 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 214.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:40,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1524 Invalid, 73 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 214.92ms Time] [2021-11-12 23:41:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-12 23:41:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-11-12 23:41:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 84 states have internal predecessors, (98), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (56), 41 states have call predecessors, (56), 41 states have call successors, (56) [2021-11-12 23:41:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 196 transitions. [2021-11-12 23:41:40,278 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 196 transitions. Word has length 101 [2021-11-12 23:41:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:40,279 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 196 transitions. [2021-11-12 23:41:40,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:41:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 196 transitions. [2021-11-12 23:41:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 23:41:40,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:40,283 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 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] [2021-11-12 23:41:40,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:41:40,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:40,497 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash 652934531, now seen corresponding path program 1 times [2021-11-12 23:41:40,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:40,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572546863] [2021-11-12 23:41:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:40,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:40,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:40,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:40,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:41:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:45,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:41:45,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-12 23:41:46,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-12 23:41:46,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:46,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572546863] [2021-11-12 23:41:46,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572546863] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:41:46,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:41:46,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2021-11-12 23:41:46,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87659538] [2021-11-12 23:41:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:46,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:41:46,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:41:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:41:46,994 INFO L87 Difference]: Start difference. First operand 137 states and 196 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:41:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:47,700 INFO L93 Difference]: Finished difference Result 268 states and 400 transitions. [2021-11-12 23:41:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:41:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 101 [2021-11-12 23:41:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:47,707 INFO L225 Difference]: With dead ends: 268 [2021-11-12 23:41:47,707 INFO L226 Difference]: Without dead ends: 166 [2021-11-12 23:41:47,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:41:47,709 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 65 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 575.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.19ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 659.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:47,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 778 Invalid, 99 Unknown, 0 Unchecked, 4.19ms Time], IncrementalHoareTripleChecker [28 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 659.16ms Time] [2021-11-12 23:41:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-12 23:41:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-12 23:41:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 95 states have (on average 1.231578947368421) internal successors, (117), 98 states have internal predecessors, (117), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (74), 55 states have call predecessors, (74), 55 states have call successors, (74) [2021-11-12 23:41:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 247 transitions. [2021-11-12 23:41:47,734 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 247 transitions. Word has length 101 [2021-11-12 23:41:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:47,735 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 247 transitions. [2021-11-12 23:41:47,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:41:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 247 transitions. [2021-11-12 23:41:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-12 23:41:47,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:47,737 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2021-11-12 23:41:47,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:41:47,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:47,951 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2079948158, now seen corresponding path program 1 times [2021-11-12 23:41:47,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:47,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447084894] [2021-11-12 23:41:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:47,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:47,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:48,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:41:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:53,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-12 23:41:53,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:53,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:41:54,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-12 23:41:54,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-12 23:41:58,625 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:41:58,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 51 [2021-11-12 23:41:58,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2021-11-12 23:41:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:41:58,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-12 23:42:05,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:05,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447084894] [2021-11-12 23:42:05,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447084894] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:42:05,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:42:05,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2021-11-12 23:42:05,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631895350] [2021-11-12 23:42:05,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:05,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:42:05,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:05,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:42:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:42:05,297 INFO L87 Difference]: Start difference. First operand 166 states and 247 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-12 23:42:07,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:09,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:11,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:13,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:23,022 INFO L93 Difference]: Finished difference Result 408 states and 641 transitions. [2021-11-12 23:42:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:42:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 103 [2021-11-12 23:42:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:23,028 INFO L225 Difference]: With dead ends: 408 [2021-11-12 23:42:23,028 INFO L226 Difference]: Without dead ends: 301 [2021-11-12 23:42:23,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 174 SyntacticMatches, 13 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 23:42:23,031 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 156 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 114 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14022.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.35ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 982 IncrementalHoareTripleChecker+Unchecked, 14576.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:23,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 914 Invalid, 2273 Unknown, 0 Unchecked, 23.35ms Time], IncrementalHoareTripleChecker [114 Valid, 1173 Invalid, 4 Unknown, 982 Unchecked, 14576.96ms Time] [2021-11-12 23:42:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-12 23:42:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 275. [2021-11-12 23:42:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 155 states have (on average 1.232258064516129) internal successors, (191), 159 states have internal predecessors, (191), 96 states have call successors, (96), 18 states have call predecessors, (96), 23 states have return successors, (138), 97 states have call predecessors, (138), 95 states have call successors, (138) [2021-11-12 23:42:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 425 transitions. [2021-11-12 23:42:23,090 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 425 transitions. Word has length 103 [2021-11-12 23:42:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:23,091 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 425 transitions. [2021-11-12 23:42:23,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 7 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-12 23:42:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 425 transitions. [2021-11-12 23:42:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-12 23:42:23,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:23,095 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2021-11-12 23:42:23,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:42:23,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:23,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2083688785, now seen corresponding path program 1 times [2021-11-12 23:42:23,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:23,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489203377] [2021-11-12 23:42:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:23,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:23,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:23,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:23,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:42:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:28,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:42:28,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:28,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:28,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:29,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-11-12 23:42:29,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2021-11-12 23:42:29,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2021-11-12 23:42:29,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-12 23:42:30,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:42:30,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-12 23:42:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-12 23:42:30,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:34,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-11-12 23:42:34,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:34,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 23:42:34,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:34,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489203377] [2021-11-12 23:42:34,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489203377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:42:34,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1957599328] [2021-11-12 23:42:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:34,706 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:42:34,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:42:34,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:42:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:44,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:42:44,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-12 23:42:44,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-12 23:42:45,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1957599328] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:42:45,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:42:45,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 11, 8] total 26 [2021-11-12 23:42:45,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007226482] [2021-11-12 23:42:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:45,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:42:45,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:42:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=589, Unknown=1, NotChecked=0, Total=650 [2021-11-12 23:42:45,658 INFO L87 Difference]: Start difference. First operand 275 states and 425 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:42:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:46,041 INFO L93 Difference]: Finished difference Result 289 states and 442 transitions. [2021-11-12 23:42:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:42:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 110 [2021-11-12 23:42:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:46,047 INFO L225 Difference]: With dead ends: 289 [2021-11-12 23:42:46,047 INFO L226 Difference]: Without dead ends: 287 [2021-11-12 23:42:46,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 407 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=68, Invalid=687, Unknown=1, NotChecked=0, Total=756 [2021-11-12 23:42:46,049 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 15 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:46,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1165 Invalid, 53 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 164.98ms Time] [2021-11-12 23:42:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-12 23:42:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2021-11-12 23:42:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 158 states have (on average 1.2278481012658229) internal successors, (194), 162 states have internal predecessors, (194), 100 states have call successors, (100), 19 states have call predecessors, (100), 24 states have return successors, (142), 101 states have call predecessors, (142), 99 states have call successors, (142) [2021-11-12 23:42:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 436 transitions. [2021-11-12 23:42:46,094 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 436 transitions. Word has length 110 [2021-11-12 23:42:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:46,095 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 436 transitions. [2021-11-12 23:42:46,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:42:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 436 transitions. [2021-11-12 23:42:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-12 23:42:46,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:46,099 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2021-11-12 23:42:46,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:46,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-12 23:42:46,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:46,515 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -386377457, now seen corresponding path program 1 times [2021-11-12 23:42:46,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:46,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499760175] [2021-11-12 23:42:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:46,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:46,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:46,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:46,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:42:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:51,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:42:51,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:51,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:51,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:52,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-11-12 23:42:52,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2021-11-12 23:42:52,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2021-11-12 23:42:52,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-12 23:42:52,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:42:52,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-12 23:42:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-12 23:42:53,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:55,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-11-12 23:42:55,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:55,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 23:42:55,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:55,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499760175] [2021-11-12 23:42:55,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499760175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:42:55,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1143603263] [2021-11-12 23:42:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:55,569 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:42:55,570 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:42:55,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8471d3-5fa6-4c38-863d-c9738e5ed1a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:43:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:00,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:43:00,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:43:07,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:23,242 WARN L227 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:43:23,247 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 23:43:23,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771