./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs --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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:41:57,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:41:57,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:41:57,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:41:57,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:41:57,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:41:57,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:41:57,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:41:57,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:41:57,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:41:57,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:41:57,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:41:57,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:41:57,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:41:57,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:41:57,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:41:57,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:41:57,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:41:57,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:41:57,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:41:57,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:41:57,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:41:57,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:41:57,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:41:57,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:41:57,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:41:57,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:41:57,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:41:57,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:41:57,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:41:57,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:41:57,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:41:57,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:41:57,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:41:57,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:41:57,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:41:57,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:41:57,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:41:57,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:41:57,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:41:57,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:41:57,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:41:58,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:41:58,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:41:58,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:41:58,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:41:58,044 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:41:58,045 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:41:58,045 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:41:58,045 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:41:58,045 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:41:58,045 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:41:58,046 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:41:58,046 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:41:58,046 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:41:58,046 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:41:58,046 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:41:58,047 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:41:58,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:41:58,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:41:58,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:41:58,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:41:58,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:41:58,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:41:58,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:41:58,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:41:58,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:41:58,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:41:58,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:41:58,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:41:58,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:41:58,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:41:58,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:41:58,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:41:58,051 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:41:58,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:41:58,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:41:58,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:41:58,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:41:58,052 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_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2021-11-19 14:41:58,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:41:58,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:41:58,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:41:58,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:41:58,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:41:58,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-19 14:41:58,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/88a582256/d1e422a4fe3a490abafcfca9f7971028/FLAGf7c27d04f [2021-11-19 14:41:59,356 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:41:59,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-19 14:41:59,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/88a582256/d1e422a4fe3a490abafcfca9f7971028/FLAGf7c27d04f [2021-11-19 14:41:59,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/88a582256/d1e422a4fe3a490abafcfca9f7971028 [2021-11-19 14:41:59,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:41:59,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:41:59,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:41:59,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:41:59,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:41:59,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:41:59" (1/1) ... [2021-11-19 14:41:59,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b1b642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:41:59, skipping insertion in model container [2021-11-19 14:41:59,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:41:59" (1/1) ... [2021-11-19 14:41:59,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:42:00,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:42:00,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-19 14:42:00,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-19 14:42:00,462 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:00,468 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:01,860 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,866 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,867 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,868 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,872 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,889 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,890 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,892 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,893 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,895 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,901 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,904 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:01,905 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:02,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:02,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:02,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:02,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:02,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:02,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:02,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:02,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:02,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:02,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:02,820 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:03,262 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,263 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,297 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,300 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,310 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,311 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,337 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,341 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,342 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,344 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,345 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:03,415 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:03,479 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) [2021-11-19 14:42:03,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a7f5f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:03, skipping insertion in model container [2021-11-19 14:42:03,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:03,481 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:42:03,483 INFO L158 Benchmark]: Toolchain (without parser) took 3616.55ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 55.6MB in the beginning and 60.7MB in the end (delta: -5.1MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-11-19 14:42:03,484 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:42:03,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3613.73ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 60.7MB in the end (delta: -5.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-11-19 14:42:03,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3613.73ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 60.7MB in the end (delta: -5.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: 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_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs --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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:42:06,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:42:06,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:42:06,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:42:06,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:42:06,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:42:06,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:42:06,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:42:06,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:42:06,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:42:06,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:42:06,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:42:06,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:42:06,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:42:06,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:42:06,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:42:06,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:42:06,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:42:06,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:42:06,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:42:06,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:42:06,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:42:06,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:42:06,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:42:06,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:42:06,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:42:06,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:42:06,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:42:06,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:42:06,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:42:06,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:42:06,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:42:06,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:42:06,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:42:06,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:42:06,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:42:06,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:42:06,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:42:06,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:42:06,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:42:06,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:42:06,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:42:06,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:42:06,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:42:06,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:42:06,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:42:06,263 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:42:06,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:42:06,264 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:42:06,264 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:42:06,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:42:06,264 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:42:06,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:42:06,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:42:06,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:42:06,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:42:06,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:42:06,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:42:06,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:42:06,267 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:42:06,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:42:06,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:42:06,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:42:06,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:42:06,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:42:06,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:42:06,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:42:06,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:42:06,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:42:06,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:42:06,269 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:42:06,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:06,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:42:06,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:42:06,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:42:06,270 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_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2021-11-19 14:42:06,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:42:06,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:42:06,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:42:06,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:42:06,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:42:06,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-19 14:42:06,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/682fac5ed/03006d958e8b40a59b1335c18f698aed/FLAG0e6964c91 [2021-11-19 14:42:07,959 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:42:07,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-19 14:42:08,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/682fac5ed/03006d958e8b40a59b1335c18f698aed/FLAG0e6964c91 [2021-11-19 14:42:08,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/data/682fac5ed/03006d958e8b40a59b1335c18f698aed [2021-11-19 14:42:08,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:42:08,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:42:08,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:08,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:42:08,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:42:08,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:42:08" (1/1) ... [2021-11-19 14:42:08,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112cd2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:08, skipping insertion in model container [2021-11-19 14:42:08,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:42:08" (1/1) ... [2021-11-19 14:42:08,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:42:08,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:42:08,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-19 14:42:08,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-19 14:42:08,815 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:08,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:10,317 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,320 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,321 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,323 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,325 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,356 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,357 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,359 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,360 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,363 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,364 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,366 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:10,366 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:11,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:11,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:11,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:11,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:11,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:11,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:11,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:11,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:11,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:11,355 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:11,915 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,916 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,955 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,956 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,964 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,965 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,991 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,992 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,992 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,993 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,994 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,994 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:11,995 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,063 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:12,132 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:42:12,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:42:12,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-19 14:42:12,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-19 14:42:12,220 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:12,221 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:12,280 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,280 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,281 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,281 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,282 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,294 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,295 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,296 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,296 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,297 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,300 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,300 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,346 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:12,347 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:12,348 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:12,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:12,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:12,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:12,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:12,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:12,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:12,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:12,416 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:12,571 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,572 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,582 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,583 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,587 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,588 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,606 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,607 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,609 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,609 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,683 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:12,729 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:42:12,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2021-11-19 14:42:12,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2021-11-19 14:42:12,761 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:42:12,762 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:42:12,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,802 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,803 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,804 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,810 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,811 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,812 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,812 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,816 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,817 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,818 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,818 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:12,855 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:42:12,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:42:12,858 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:42:12,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:42:12,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:42:12,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:42:12,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:42:12,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:42:12,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:42:12,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:42:12,885 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:42:13,024 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,024 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,037 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,038 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,043 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,044 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,056 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,057 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,058 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:42:13,128 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:42:13,526 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:42:13,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13 WrapperNode [2021-11-19 14:42:13,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:42:13,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:42:13,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:42:13,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:42:13,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,782 INFO L137 Inliner]: procedures = 796, calls = 2456, calls flagged for inlining = 69, calls inlined = 11, statements flattened = 633 [2021-11-19 14:42:13,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:42:13,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:42:13,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:42:13,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:42:13,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:42:13,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:42:13,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:42:13,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:42:13,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (1/1) ... [2021-11-19 14:42:13,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:42:13,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:42:13,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:42:14,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:42:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 14:42:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_done [2021-11-19 14:42:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_done [2021-11-19 14:42:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:42:14,058 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:42:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:42:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:42:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 14:42:14,059 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 14:42:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:42:14,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:42:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:42:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:42:14,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:42:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:42:14,060 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:42:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 14:42:14,061 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 14:42:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 14:42:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:42:14,061 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 14:42:14,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 14:42:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 14:42:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:42:14,062 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:42:14,062 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:42:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 14:42:14,063 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 14:42:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:42:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:42:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:42:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:42:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 14:42:14,065 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 14:42:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:42:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:42:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:42:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:42:14,065 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:42:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-11-19 14:42:14,066 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-11-19 14:42:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:42:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:42:14,066 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 14:42:14,067 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 14:42:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:42:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 14:42:14,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 14:42:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 14:42:14,068 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 14:42:14,623 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:42:14,625 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:42:18,572 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:42:18,593 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:42:18,594 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:42:18,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:42:18 BoogieIcfgContainer [2021-11-19 14:42:18,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:42:18,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:42:18,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:42:18,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:42:18,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:42:08" (1/3) ... [2021-11-19 14:42:18,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2971ee45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:42:18, skipping insertion in model container [2021-11-19 14:42:18,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:42:13" (2/3) ... [2021-11-19 14:42:18,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2971ee45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:42:18, skipping insertion in model container [2021-11-19 14:42:18,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:42:18" (3/3) ... [2021-11-19 14:42:18,613 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2021-11-19 14:42:18,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:42:18,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:42:18,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:42:18,703 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 [2021-11-19 14:42:18,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:42:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 97 states have internal predecessors, (119), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-19 14:42:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-19 14:42:18,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:18,746 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:18,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1112082406, now seen corresponding path program 1 times [2021-11-19 14:42:18,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:18,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748033171] [2021-11-19 14:42:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:18,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:18,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:18,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:18,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:42:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:19,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:42:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-19 14:42:20,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 14:42:20,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:20,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748033171] [2021-11-19 14:42:20,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748033171] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:20,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:20,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:42:20,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876131014] [2021-11-19 14:42:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:20,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:42:20,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:42:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:42:20,907 INFO L87 Difference]: Start difference. First operand has 153 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 97 states have internal predecessors, (119), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:42:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:20,995 INFO L93 Difference]: Finished difference Result 298 states and 410 transitions. [2021-11-19 14:42:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:42:20,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 136 [2021-11-19 14:42:20,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:21,015 INFO L225 Difference]: With dead ends: 298 [2021-11-19 14:42:21,015 INFO L226 Difference]: Without dead ends: 147 [2021-11-19 14:42:21,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:42:21,030 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:21,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:42:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-19 14:42:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-19 14:42:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 92 states have internal predecessors, (112), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-19 14:42:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 191 transitions. [2021-11-19 14:42:21,114 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 191 transitions. Word has length 136 [2021-11-19 14:42:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:21,115 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 191 transitions. [2021-11-19 14:42:21,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:42:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 191 transitions. [2021-11-19 14:42:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-19 14:42:21,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:21,135 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:21,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:21,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:21,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -978654614, now seen corresponding path program 1 times [2021-11-19 14:42:21,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:21,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664265660] [2021-11-19 14:42:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:21,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:21,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:21,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:42:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:22,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:42:22,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-19 14:42:22,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 14:42:23,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:23,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664265660] [2021-11-19 14:42:23,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664265660] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:23,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:23,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:42:23,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675577521] [2021-11-19 14:42:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:23,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:42:23,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:42:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:23,259 INFO L87 Difference]: Start difference. First operand 147 states and 191 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:42:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:23,402 INFO L93 Difference]: Finished difference Result 286 states and 373 transitions. [2021-11-19 14:42:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:23,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 136 [2021-11-19 14:42:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:23,417 INFO L225 Difference]: With dead ends: 286 [2021-11-19 14:42:23,417 INFO L226 Difference]: Without dead ends: 151 [2021-11-19 14:42:23,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:42:23,420 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 2 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:23,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 752 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:42:23,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-19 14:42:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-19 14:42:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 95 states have internal predecessors, (115), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-19 14:42:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2021-11-19 14:42:23,459 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 136 [2021-11-19 14:42:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:23,461 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2021-11-19 14:42:23,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:42:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2021-11-19 14:42:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 14:42:23,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:23,468 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:23,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:23,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:23,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1090143658, now seen corresponding path program 1 times [2021-11-19 14:42:23,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:23,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678305894] [2021-11-19 14:42:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:23,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:23,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:23,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:42:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:24,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:42:24,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 14:42:25,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 14:42:25,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:25,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678305894] [2021-11-19 14:42:25,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678305894] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:25,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:25,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:42:25,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630012904] [2021-11-19 14:42:25,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:25,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:42:25,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:42:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:42:25,769 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-19 14:42:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:26,018 INFO L93 Difference]: Finished difference Result 292 states and 377 transitions. [2021-11-19 14:42:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:42:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 148 [2021-11-19 14:42:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:26,024 INFO L225 Difference]: With dead ends: 292 [2021-11-19 14:42:26,024 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 14:42:26,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:42:26,027 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:26,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 864 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:42:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 14:42:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-19 14:42:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 97 states have internal predecessors, (116), 40 states have call successors, (40), 15 states have call predecessors, (40), 17 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2021-11-19 14:42:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2021-11-19 14:42:26,047 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 148 [2021-11-19 14:42:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:26,048 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2021-11-19 14:42:26,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-19 14:42:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2021-11-19 14:42:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-19 14:42:26,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:26,051 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:26,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:26,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:26,274 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1917407753, now seen corresponding path program 1 times [2021-11-19 14:42:26,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:26,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212610396] [2021-11-19 14:42:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:26,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:26,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:26,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:42:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:27,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:42:27,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:27,816 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 16 treesize of output 12 [2021-11-19 14:42:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 14:42:28,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:29,682 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 26 [2021-11-19 14:42:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 14:42:30,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:30,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212610396] [2021-11-19 14:42:30,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212610396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:42:30,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:42:30,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 15 [2021-11-19 14:42:30,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004824202] [2021-11-19 14:42:30,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:30,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:42:30,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:42:30,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:42:30,058 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 14:42:32,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:42:34,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:42:36,187 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 [] [2021-11-19 14:42:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:37,318 INFO L93 Difference]: Finished difference Result 303 states and 390 transitions. [2021-11-19 14:42:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:42:37,321 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 153 [2021-11-19 14:42:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:37,324 INFO L225 Difference]: With dead ends: 303 [2021-11-19 14:42:37,324 INFO L226 Difference]: Without dead ends: 170 [2021-11-19 14:42:37,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:42:37,326 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 28 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:37,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1552 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 3 Unknown, 40 Unchecked, 7.2s Time] [2021-11-19 14:42:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-19 14:42:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2021-11-19 14:42:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 40 states have call successors, (40), 16 states have call predecessors, (40), 19 states have return successors, (44), 40 states have call predecessors, (44), 39 states have call successors, (44) [2021-11-19 14:42:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2021-11-19 14:42:37,345 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 153 [2021-11-19 14:42:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:37,346 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2021-11-19 14:42:37,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-19 14:42:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2021-11-19 14:42:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-19 14:42:37,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:37,349 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:37,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 14:42:37,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:37,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash -40924935, now seen corresponding path program 1 times [2021-11-19 14:42:37,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:37,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167715565] [2021-11-19 14:42:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:37,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:37,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:37,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:42:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:38,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:42:38,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 14:42:38,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 14:42:39,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:39,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167715565] [2021-11-19 14:42:39,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167715565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:42:39,523 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:42:39,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:42:39,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983331660] [2021-11-19 14:42:39,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:39,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:42:39,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:42:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:39,526 INFO L87 Difference]: Start difference. First operand 165 states and 212 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:42:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:39,644 INFO L93 Difference]: Finished difference Result 308 states and 398 transitions. [2021-11-19 14:42:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 153 [2021-11-19 14:42:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:39,649 INFO L225 Difference]: With dead ends: 308 [2021-11-19 14:42:39,650 INFO L226 Difference]: Without dead ends: 170 [2021-11-19 14:42:39,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:39,651 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 26 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:39,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 519 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:42:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-19 14:42:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2021-11-19 14:42:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 109 states have internal predecessors, (128), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-19 14:42:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2021-11-19 14:42:39,670 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 153 [2021-11-19 14:42:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:39,671 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2021-11-19 14:42:39,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:42:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2021-11-19 14:42:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 14:42:39,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:39,674 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:39,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:39,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:39,889 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:39,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash 253240325, now seen corresponding path program 1 times [2021-11-19 14:42:39,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:39,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633232688] [2021-11-19 14:42:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:39,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:39,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:39,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:39,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:42:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:40,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:42:40,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:41,086 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 16 treesize of output 12 [2021-11-19 14:42:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 14:42:42,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:42,975 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 26 [2021-11-19 14:42:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 14:42:43,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:43,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633232688] [2021-11-19 14:42:43,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633232688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:42:43,288 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:42:43,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 17 [2021-11-19 14:42:43,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832093303] [2021-11-19 14:42:43,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:43,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:42:43,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:42:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:42:43,291 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) [2021-11-19 14:42:45,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:42:47,387 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 [] [2021-11-19 14:42:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:48,650 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2021-11-19 14:42:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:42:48,652 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) Word has length 159 [2021-11-19 14:42:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:48,654 INFO L225 Difference]: With dead ends: 329 [2021-11-19 14:42:48,655 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 14:42:48,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:42:48,656 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 43 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:48,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1899 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 146 Invalid, 2 Unknown, 127 Unchecked, 5.3s Time] [2021-11-19 14:42:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 14:42:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2021-11-19 14:42:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.2) internal successors, (132), 113 states have internal predecessors, (132), 42 states have call successors, (42), 17 states have call predecessors, (42), 20 states have return successors, (48), 42 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-19 14:42:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2021-11-19 14:42:48,672 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 159 [2021-11-19 14:42:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:48,673 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2021-11-19 14:42:48,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) [2021-11-19 14:42:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2021-11-19 14:42:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-19 14:42:48,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:48,676 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:48,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:48,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:48,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1005891537, now seen corresponding path program 1 times [2021-11-19 14:42:48,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:48,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717065094] [2021-11-19 14:42:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:48,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:48,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:42:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:49,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:42:49,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 14:42:50,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 14:42:50,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:50,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717065094] [2021-11-19 14:42:50,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717065094] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:50,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:50,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 14:42:50,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389694108] [2021-11-19 14:42:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:50,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:42:50,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:42:50,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:42:50,752 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 14:42:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:51,070 INFO L93 Difference]: Finished difference Result 312 states and 401 transitions. [2021-11-19 14:42:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 164 [2021-11-19 14:42:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:51,074 INFO L225 Difference]: With dead ends: 312 [2021-11-19 14:42:51,074 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 14:42:51,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:42:51,076 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 37 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:51,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 643 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:42:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 14:42:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-19 14:42:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 115 states have internal predecessors, (133), 42 states have call successors, (42), 17 states have call predecessors, (42), 21 states have return successors, (50), 42 states have call predecessors, (50), 41 states have call successors, (50) [2021-11-19 14:42:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 225 transitions. [2021-11-19 14:42:51,103 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 225 transitions. Word has length 164 [2021-11-19 14:42:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:51,103 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 225 transitions. [2021-11-19 14:42:51,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 14:42:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 225 transitions. [2021-11-19 14:42:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 14:42:51,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:51,105 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:51,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:51,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:51,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash -648979799, now seen corresponding path program 1 times [2021-11-19 14:42:51,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:51,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718051563] [2021-11-19 14:42:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:51,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:51,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:51,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:51,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:42:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:52,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:42:52,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:52,460 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 16 treesize of output 12 [2021-11-19 14:42:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-19 14:42:53,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 14:42:53,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:53,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718051563] [2021-11-19 14:42:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718051563] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:53,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:53,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2021-11-19 14:42:53,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804696176] [2021-11-19 14:42:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:53,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:42:53,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:53,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:42:53,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:42:53,669 INFO L87 Difference]: Start difference. First operand 175 states and 225 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 14:42:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:53,805 INFO L93 Difference]: Finished difference Result 323 states and 412 transitions. [2021-11-19 14:42:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:42:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 165 [2021-11-19 14:42:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:53,810 INFO L225 Difference]: With dead ends: 323 [2021-11-19 14:42:53,810 INFO L226 Difference]: Without dead ends: 182 [2021-11-19 14:42:53,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 318 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:42:53,812 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 9 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:53,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 865 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2021-11-19 14:42:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-19 14:42:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-19 14:42:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 120 states have internal predecessors, (140), 42 states have call successors, (42), 19 states have call predecessors, (42), 22 states have return successors, (50), 42 states have call predecessors, (50), 41 states have call successors, (50) [2021-11-19 14:42:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 232 transitions. [2021-11-19 14:42:53,827 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 232 transitions. Word has length 165 [2021-11-19 14:42:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:53,828 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 232 transitions. [2021-11-19 14:42:53,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 14:42:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 232 transitions. [2021-11-19 14:42:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-19 14:42:53,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:53,831 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:53,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:54,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:54,054 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1153365888, now seen corresponding path program 1 times [2021-11-19 14:42:54,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:54,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850834442] [2021-11-19 14:42:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:54,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:54,057 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:54,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:42:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:54,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:42:54,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 14:42:55,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-11-19 14:42:55,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:55,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850834442] [2021-11-19 14:42:55,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850834442] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:55,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:55,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-19 14:42:55,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808582946] [2021-11-19 14:42:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:55,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:42:55,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:42:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:42:55,728 INFO L87 Difference]: Start difference. First operand 182 states and 232 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 14:42:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:55,932 INFO L93 Difference]: Finished difference Result 323 states and 414 transitions. [2021-11-19 14:42:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:42:55,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 174 [2021-11-19 14:42:55,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:55,936 INFO L225 Difference]: With dead ends: 323 [2021-11-19 14:42:55,936 INFO L226 Difference]: Without dead ends: 184 [2021-11-19 14:42:55,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:42:55,938 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:55,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 859 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:42:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-19 14:42:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-19 14:42:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 118 states have (on average 1.194915254237288) internal successors, (141), 122 states have internal predecessors, (141), 42 states have call successors, (42), 19 states have call predecessors, (42), 23 states have return successors, (53), 42 states have call predecessors, (53), 41 states have call successors, (53) [2021-11-19 14:42:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 236 transitions. [2021-11-19 14:42:55,954 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 236 transitions. Word has length 174 [2021-11-19 14:42:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:55,954 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 236 transitions. [2021-11-19 14:42:55,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 14:42:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 236 transitions. [2021-11-19 14:42:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-19 14:42:55,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:55,958 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:56,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:56,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:56,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1809976868, now seen corresponding path program 1 times [2021-11-19 14:42:56,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:56,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046226709] [2021-11-19 14:42:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:56,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:56,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:56,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:56,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:42:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:57,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:42:57,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 14:42:57,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-19 14:42:58,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:58,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046226709] [2021-11-19 14:42:58,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046226709] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:42:58,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:42:58,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:42:58,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376454901] [2021-11-19 14:42:58,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:58,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:42:58,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:42:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:58,031 INFO L87 Difference]: Start difference. First operand 184 states and 236 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:42:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:58,082 INFO L93 Difference]: Finished difference Result 332 states and 434 transitions. [2021-11-19 14:42:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:42:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 176 [2021-11-19 14:42:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:58,088 INFO L225 Difference]: With dead ends: 332 [2021-11-19 14:42:58,089 INFO L226 Difference]: Without dead ends: 191 [2021-11-19 14:42:58,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:42:58,091 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:58,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 756 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:42:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-19 14:42:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-11-19 14:42:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 128 states have internal predecessors, (146), 42 states have call successors, (42), 19 states have call predecessors, (42), 25 states have return successors, (56), 43 states have call predecessors, (56), 41 states have call successors, (56) [2021-11-19 14:42:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 244 transitions. [2021-11-19 14:42:58,115 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 244 transitions. Word has length 176 [2021-11-19 14:42:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:58,116 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 244 transitions. [2021-11-19 14:42:58,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:42:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 244 transitions. [2021-11-19 14:42:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-19 14:42:58,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:58,121 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:58,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:58,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:58,345 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2071333262, now seen corresponding path program 1 times [2021-11-19 14:42:58,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:58,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671101455] [2021-11-19 14:42:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:58,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:58,351 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:58,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:42:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:59,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:42:59,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-19 14:43:00,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-19 14:43:01,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:01,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671101455] [2021-11-19 14:43:01,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671101455] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:43:01,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:43:01,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-19 14:43:01,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442594180] [2021-11-19 14:43:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:01,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:43:01,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:43:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:43:01,446 INFO L87 Difference]: Start difference. First operand 191 states and 244 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-19 14:43:03,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:05,532 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 [] [2021-11-19 14:43:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:06,331 INFO L93 Difference]: Finished difference Result 339 states and 442 transitions. [2021-11-19 14:43:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:43:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 182 [2021-11-19 14:43:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:06,336 INFO L225 Difference]: With dead ends: 339 [2021-11-19 14:43:06,337 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 14:43:06,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:43:06,338 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 7 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:06,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1049 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 73 Unchecked, 4.6s Time] [2021-11-19 14:43:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 14:43:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2021-11-19 14:43:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 124 states have internal predecessors, (143), 41 states have call successors, (41), 19 states have call predecessors, (41), 24 states have return successors, (52), 42 states have call predecessors, (52), 40 states have call successors, (52) [2021-11-19 14:43:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 236 transitions. [2021-11-19 14:43:06,375 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 236 transitions. Word has length 182 [2021-11-19 14:43:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:06,375 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 236 transitions. [2021-11-19 14:43:06,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-19 14:43:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 236 transitions. [2021-11-19 14:43:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:43:06,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:06,378 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:06,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:06,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:06,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1352140560, now seen corresponding path program 1 times [2021-11-19 14:43:06,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:06,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827095563] [2021-11-19 14:43:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:06,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:06,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:06,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:43:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:07,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:43:07,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-19 14:43:07,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-19 14:43:08,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:08,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827095563] [2021-11-19 14:43:08,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827095563] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:43:08,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:43:08,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:43:08,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809713195] [2021-11-19 14:43:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:08,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:43:08,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:43:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:43:08,374 INFO L87 Difference]: Start difference. First operand 186 states and 236 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 14:43:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:08,544 INFO L93 Difference]: Finished difference Result 290 states and 373 transitions. [2021-11-19 14:43:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:43:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 187 [2021-11-19 14:43:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:08,547 INFO L225 Difference]: With dead ends: 290 [2021-11-19 14:43:08,547 INFO L226 Difference]: Without dead ends: 184 [2021-11-19 14:43:08,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:43:08,548 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:08,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 864 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:43:08,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-19 14:43:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2021-11-19 14:43:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 119 states have internal predecessors, (137), 41 states have call successors, (41), 19 states have call predecessors, (41), 22 states have return successors, (50), 41 states have call predecessors, (50), 40 states have call successors, (50) [2021-11-19 14:43:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 228 transitions. [2021-11-19 14:43:08,562 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 228 transitions. Word has length 187 [2021-11-19 14:43:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:08,563 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 228 transitions. [2021-11-19 14:43:08,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 14:43:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 228 transitions. [2021-11-19 14:43:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-19 14:43:08,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:08,565 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:08,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:08,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:08,782 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1832527067, now seen corresponding path program 1 times [2021-11-19 14:43:08,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:08,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627388852] [2021-11-19 14:43:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:08,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:08,785 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:43:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:10,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:43:10,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-19 14:43:10,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-19 14:43:10,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:10,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627388852] [2021-11-19 14:43:10,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627388852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:43:10,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:43:10,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 14:43:10,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708097952] [2021-11-19 14:43:10,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:10,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:43:10,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:43:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:43:10,950 INFO L87 Difference]: Start difference. First operand 180 states and 228 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 14:43:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:11,530 INFO L93 Difference]: Finished difference Result 273 states and 348 transitions. [2021-11-19 14:43:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:43:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 192 [2021-11-19 14:43:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:11,533 INFO L225 Difference]: With dead ends: 273 [2021-11-19 14:43:11,533 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 14:43:11,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:43:11,535 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 53 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:11,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1061 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:43:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 14:43:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-19 14:43:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (48), 41 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-19 14:43:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 223 transitions. [2021-11-19 14:43:11,547 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 223 transitions. Word has length 192 [2021-11-19 14:43:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:11,549 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 223 transitions. [2021-11-19 14:43:11,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 14:43:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 223 transitions. [2021-11-19 14:43:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 14:43:11,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:11,551 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:11,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:11,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:11,765 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1652376459, now seen corresponding path program 1 times [2021-11-19 14:43:11,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:11,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040442642] [2021-11-19 14:43:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:11,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:11,771 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:11,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:43:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:13,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:43:13,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 14:43:13,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-19 14:43:13,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:43:13,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040442642] [2021-11-19 14:43:13,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040442642] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:43:13,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:43:13,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-19 14:43:13,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107459241] [2021-11-19 14:43:13,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:43:13,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:43:13,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:43:13,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:43:13,784 INFO L87 Difference]: Start difference. First operand 178 states and 223 transitions. Second operand has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 14:43:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:43:13,975 INFO L93 Difference]: Finished difference Result 269 states and 340 transitions. [2021-11-19 14:43:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:43:13,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2021-11-19 14:43:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:43:13,979 INFO L225 Difference]: With dead ends: 269 [2021-11-19 14:43:13,979 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 14:43:13,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:43:13,980 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 2 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:43:13,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 846 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:43:13,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 14:43:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-19 14:43:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (47), 41 states have call predecessors, (47), 40 states have call successors, (47) [2021-11-19 14:43:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 222 transitions. [2021-11-19 14:43:13,993 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 222 transitions. Word has length 193 [2021-11-19 14:43:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:43:13,994 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 222 transitions. [2021-11-19 14:43:13,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 14:43:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 222 transitions. [2021-11-19 14:43:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 14:43:13,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:43:13,996 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:43:14,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:43:14,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:43:14,221 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:43:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:43:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1289696526, now seen corresponding path program 1 times [2021-11-19 14:43:14,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:43:14,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833277576] [2021-11-19 14:43:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:43:14,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:43:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:43:14,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:43:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:43:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:43:15,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:43:15,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:43:17,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:43:17,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 25 treesize of output 9 [2021-11-19 14:43:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-19 14:43:17,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:18,799 INFO L354 Elim1Store]: treesize reduction 221, result has 42.6 percent of original size [2021-11-19 14:43:18,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 183 [2021-11-19 14:44:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-19 14:44:22,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:22,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833277576] [2021-11-19 14:44:22,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833277576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:22,156 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:22,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 7] imperfect sequences [] total 15 [2021-11-19 14:44:22,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626943075] [2021-11-19 14:44:22,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:22,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:44:22,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:44:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:44:22,158 INFO L87 Difference]: Start difference. First operand 178 states and 222 transitions. Second operand has 15 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 7 states have call successors, (37), 4 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 14:44:24,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:26,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:28,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:32,716 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2021-11-19 14:44:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:44:32,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 7 states have call successors, (37), 4 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 215 [2021-11-19 14:44:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:32,721 INFO L225 Difference]: With dead ends: 296 [2021-11-19 14:44:32,721 INFO L226 Difference]: Without dead ends: 215 [2021-11-19 14:44:32,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 415 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:44:32,723 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 89 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 44 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:32,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 2046 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 497 Invalid, 3 Unknown, 64 Unchecked, 9.7s Time] [2021-11-19 14:44:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-19 14:44:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2021-11-19 14:44:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 133 states have (on average 1.1729323308270676) internal successors, (156), 135 states have internal predecessors, (156), 47 states have call successors, (47), 21 states have call predecessors, (47), 24 states have return successors, (61), 48 states have call predecessors, (61), 46 states have call successors, (61) [2021-11-19 14:44:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 264 transitions. [2021-11-19 14:44:32,741 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 264 transitions. Word has length 215 [2021-11-19 14:44:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:32,743 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 264 transitions. [2021-11-19 14:44:32,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 7 states have call successors, (37), 4 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 14:44:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 264 transitions. [2021-11-19 14:44:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 14:44:32,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:32,746 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:32,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:32,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:32,967 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:32,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1287849484, now seen corresponding path program 1 times [2021-11-19 14:44:32,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:32,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317307299] [2021-11-19 14:44:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:32,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:32,970 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:32,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:44:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:34,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:44:34,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:35,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:44:35,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 25 treesize of output 9 [2021-11-19 14:44:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-19 14:44:36,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:38,128 INFO L354 Elim1Store]: treesize reduction 221, result has 42.6 percent of original size [2021-11-19 14:44:38,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 183 [2021-11-19 14:45:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-19 14:45:48,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:48,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317307299] [2021-11-19 14:45:48,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317307299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:48,633 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:48,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 9] imperfect sequences [] total 19 [2021-11-19 14:45:48,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226804500] [2021-11-19 14:45:48,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:48,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:45:48,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:45:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:45:48,635 INFO L87 Difference]: Start difference. First operand 205 states and 264 transitions. Second operand has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 15 states have internal predecessors, (96), 7 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 14:45:50,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:52,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:57,097 INFO L93 Difference]: Finished difference Result 221 states and 282 transitions. [2021-11-19 14:45:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 14:45:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 15 states have internal predecessors, (96), 7 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 215 [2021-11-19 14:45:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:57,100 INFO L225 Difference]: With dead ends: 221 [2021-11-19 14:45:57,100 INFO L226 Difference]: Without dead ends: 219 [2021-11-19 14:45:57,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:45:57,101 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 103 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:57,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2393 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 627 Invalid, 2 Unknown, 62 Unchecked, 7.5s Time] [2021-11-19 14:45:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-19 14:45:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 210. [2021-11-19 14:45:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 139 states have internal predecessors, (159), 48 states have call successors, (48), 22 states have call predecessors, (48), 25 states have return successors, (62), 48 states have call predecessors, (62), 47 states have call successors, (62) [2021-11-19 14:45:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 269 transitions. [2021-11-19 14:45:57,117 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 269 transitions. Word has length 215 [2021-11-19 14:45:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:57,118 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 269 transitions. [2021-11-19 14:45:57,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 15 states have internal predecessors, (96), 7 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 14:45:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 269 transitions. [2021-11-19 14:45:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 14:45:57,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:57,121 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:57,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:57,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:57,329 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1304674839, now seen corresponding path program 1 times [2021-11-19 14:45:57,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:57,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480366667] [2021-11-19 14:45:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:57,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:57,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:57,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:57,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:45:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:58,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 14:45:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:00,095 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:46:00,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 35 [2021-11-19 14:46:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 14:46:00,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:00,872 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-19 14:46:00,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 1 [2021-11-19 14:46:01,737 INFO L354 Elim1Store]: treesize reduction 350, result has 9.1 percent of original size [2021-11-19 14:46:01,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 69 treesize of output 55 [2021-11-19 14:46:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-19 14:46:03,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:03,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480366667] [2021-11-19 14:46:03,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480366667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:03,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:03,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 8] imperfect sequences [] total 17 [2021-11-19 14:46:03,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020760941] [2021-11-19 14:46:03,280 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:03,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:46:03,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:46:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:46:03,282 INFO L87 Difference]: Start difference. First operand 210 states and 269 transitions. Second operand has 17 states, 16 states have (on average 6.4375) internal successors, (103), 14 states have internal predecessors, (103), 8 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2021-11-19 14:46:05,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:07,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:09,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:11,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:13,393 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 [] [2021-11-19 14:46:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:20,061 INFO L93 Difference]: Finished difference Result 363 states and 479 transitions. [2021-11-19 14:46:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:46:20,063 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.4375) internal successors, (103), 14 states have internal predecessors, (103), 8 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) Word has length 218 [2021-11-19 14:46:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:20,065 INFO L225 Difference]: With dead ends: 363 [2021-11-19 14:46:20,065 INFO L226 Difference]: Without dead ends: 268 [2021-11-19 14:46:20,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:46:20,066 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 155 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 57 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:20,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 2074 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 728 Invalid, 5 Unknown, 74 Unchecked, 15.2s Time] [2021-11-19 14:46:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-19 14:46:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 252. [2021-11-19 14:46:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 169 states have internal predecessors, (199), 56 states have call successors, (56), 25 states have call predecessors, (56), 29 states have return successors, (80), 57 states have call predecessors, (80), 55 states have call successors, (80) [2021-11-19 14:46:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 335 transitions. [2021-11-19 14:46:20,087 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 335 transitions. Word has length 218 [2021-11-19 14:46:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:20,088 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 335 transitions. [2021-11-19 14:46:20,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.4375) internal successors, (103), 14 states have internal predecessors, (103), 8 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2021-11-19 14:46:20,089 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 335 transitions. [2021-11-19 14:46:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 14:46:20,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:20,091 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:20,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:20,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:20,312 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:20,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1562840277, now seen corresponding path program 1 times [2021-11-19 14:46:20,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:20,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575824573] [2021-11-19 14:46:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:20,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:20,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:20,315 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:20,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:46:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:21,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:46:21,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:23,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:46:23,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 35 [2021-11-19 14:46:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-19 14:46:23,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:24,079 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-19 14:46:24,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 1 [2021-11-19 14:46:25,342 INFO L354 Elim1Store]: treesize reduction 323, result has 16.1 percent of original size [2021-11-19 14:46:25,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 69 treesize of output 82 [2021-11-19 14:46:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-11-19 14:46:27,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:27,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575824573] [2021-11-19 14:46:27,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575824573] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:27,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:27,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 20 [2021-11-19 14:46:27,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747415765] [2021-11-19 14:46:27,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:27,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:46:27,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:27,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:46:27,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:46:27,990 INFO L87 Difference]: Start difference. First operand 252 states and 335 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 14:46:30,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:32,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:34,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:39,322 INFO L93 Difference]: Finished difference Result 342 states and 444 transitions. [2021-11-19 14:46:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:46:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 218 [2021-11-19 14:46:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:39,327 INFO L225 Difference]: With dead ends: 342 [2021-11-19 14:46:39,327 INFO L226 Difference]: Without dead ends: 231 [2021-11-19 14:46:39,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-11-19 14:46:39,329 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 40 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:39,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1045 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 338 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-19 14:46:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-19 14:46:39,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2021-11-19 14:46:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 148 states have (on average 1.1891891891891893) internal successors, (176), 151 states have internal predecessors, (176), 49 states have call successors, (49), 23 states have call predecessors, (49), 27 states have return successors, (68), 50 states have call predecessors, (68), 48 states have call successors, (68) [2021-11-19 14:46:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 293 transitions. [2021-11-19 14:46:39,348 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 293 transitions. Word has length 218 [2021-11-19 14:46:39,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:39,349 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 293 transitions. [2021-11-19 14:46:39,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 14:46:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 293 transitions. [2021-11-19 14:46:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-19 14:46:39,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:39,352 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:39,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:39,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:39,575 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -281722156, now seen corresponding path program 1 times [2021-11-19 14:46:39,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:39,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801977762] [2021-11-19 14:46:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:39,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:39,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:39,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:39,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:46:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:41,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 14:46:41,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:43,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:46:43,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 25 treesize of output 9 [2021-11-19 14:46:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-19 14:46:43,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:46,231 INFO L354 Elim1Store]: treesize reduction 221, result has 42.6 percent of original size [2021-11-19 14:46:46,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 183 [2021-11-19 14:46:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-19 14:46:47,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:47,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801977762] [2021-11-19 14:46:47,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801977762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:47,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:47,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 10] imperfect sequences [] total 21 [2021-11-19 14:46:47,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150073357] [2021-11-19 14:46:47,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:47,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 14:46:47,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 14:46:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:46:47,481 INFO L87 Difference]: Start difference. First operand 225 states and 293 transitions. Second operand has 21 states, 19 states have (on average 5.421052631578948) internal successors, (103), 17 states have internal predecessors, (103), 7 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 14:46:49,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:51,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:53,599 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 [] [2021-11-19 14:47:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:01,215 INFO L93 Difference]: Finished difference Result 325 states and 412 transitions. [2021-11-19 14:47:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:47:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.421052631578948) internal successors, (103), 17 states have internal predecessors, (103), 7 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 219 [2021-11-19 14:47:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:01,219 INFO L225 Difference]: With dead ends: 325 [2021-11-19 14:47:01,219 INFO L226 Difference]: Without dead ends: 242 [2021-11-19 14:47:01,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 419 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:47:01,221 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 120 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 38 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:01,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 2964 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 946 Invalid, 3 Unknown, 72 Unchecked, 12.5s Time] [2021-11-19 14:47:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-19 14:47:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 234. [2021-11-19 14:47:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 155 states have (on average 1.1806451612903226) internal successors, (183), 158 states have internal predecessors, (183), 49 states have call successors, (49), 25 states have call predecessors, (49), 29 states have return successors, (67), 50 states have call predecessors, (67), 48 states have call successors, (67) [2021-11-19 14:47:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 299 transitions. [2021-11-19 14:47:01,238 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 299 transitions. Word has length 219 [2021-11-19 14:47:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:01,239 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 299 transitions. [2021-11-19 14:47:01,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.421052631578948) internal successors, (103), 17 states have internal predecessors, (103), 7 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 14:47:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 299 transitions. [2021-11-19 14:47:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 14:47:01,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:01,242 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:01,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:01,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:01,453 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1273103455, now seen corresponding path program 1 times [2021-11-19 14:47:01,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:01,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767465079] [2021-11-19 14:47:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:01,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:01,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:01,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:01,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cff0a30-64cb-45d2-86d0-840a0c296b74/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:47:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:03,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 14:47:03,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:08,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:47:08,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 190 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 146 treesize of output 50 [2021-11-19 14:47:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 73 proven. 5 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 14:47:08,608 INFO L328 TraceCheckSpWp]: Computing backward predicates...