./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:22:20,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:22:20,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:22:20,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:22:20,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:22:20,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:22:20,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:22:20,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:22:20,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:22:20,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:22:20,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:22:20,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:22:20,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:22:20,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:22:20,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:22:20,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:22:20,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:22:20,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:22:20,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:22:20,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:22:20,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:22:20,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:22:20,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:22:20,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:22:20,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:22:20,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:22:20,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:22:20,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:22:20,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:22:20,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:22:20,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:22:20,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:22:20,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:22:20,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:22:20,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:22:20,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:22:20,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:22:20,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:22:20,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:22:20,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:22:20,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:22:20,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:22:20,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:22:20,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:22:20,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:22:20,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:22:20,569 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:22:20,569 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:22:20,570 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:22:20,570 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:22:20,570 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:22:20,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:22:20,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:22:20,572 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:22:20,572 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:22:20,573 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:22:20,573 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:22:20,574 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:22:20,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:22:20,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:22:20,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:22:20,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:22:20,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:22:20,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:22:20,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:22:20,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:22:20,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:22:20,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:22:20,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:22:20,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:22:20,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:20,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:22:20,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:22:20,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:22:20,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:22:20,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:22:20,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:22:20,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:22:20,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:22:20,583 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_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2021-11-12 23:22:20,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:22:21,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:22:21,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:22:21,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:22:21,009 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:22:21,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-12 23:22:21,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/2c6ad3c23/874c7f7a6a5049b8a2f11916b32e09e5/FLAG52d7fe453 [2021-11-12 23:22:22,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:22:22,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-12 23:22:22,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/2c6ad3c23/874c7f7a6a5049b8a2f11916b32e09e5/FLAG52d7fe453 [2021-11-12 23:22:22,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/2c6ad3c23/874c7f7a6a5049b8a2f11916b32e09e5 [2021-11-12 23:22:22,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:22:22,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:22:22,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:22,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:22:22,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:22:22,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:22" (1/1) ... [2021-11-12 23:22:22,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f706dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:22, skipping insertion in model container [2021-11-12 23:22:22,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:22" (1/1) ... [2021-11-12 23:22:22,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:22:22,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:22,972 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-12 23:22:22,980 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-12 23:22:23,006 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:22:23,012 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:22:24,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,060 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,064 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,478 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:22:24,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:22:24,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:22:24,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:22:24,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:22:24,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:22:24,484 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:22:24,485 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:22:24,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:22:24,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:22:24,703 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:22:24,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:24,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:24,949 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:22:24,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e64f5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:24, skipping insertion in model container [2021-11-12 23:22:24,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:24,950 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:22:24,952 INFO L158 Benchmark]: Toolchain (without parser) took 2435.89ms. Allocated memory was 100.7MB in the beginning and 148.9MB in the end (delta: 48.2MB). Free memory was 74.0MB in the beginning and 96.9MB in the end (delta: -22.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2021-11-12 23:22:24,953 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:22:24,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2431.60ms. Allocated memory was 100.7MB in the beginning and 148.9MB in the end (delta: 48.2MB). Free memory was 73.9MB in the beginning and 96.9MB in the end (delta: -23.0MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2021-11-12 23:22:24,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2431.60ms. Allocated memory was 100.7MB in the beginning and 148.9MB in the end (delta: 48.2MB). Free memory was 73.9MB in the beginning and 96.9MB in the end (delta: -23.0MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:22:27,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:22:27,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:22:27,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:22:27,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:22:27,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:22:27,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:22:27,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:22:27,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:22:27,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:22:27,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:22:27,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:22:27,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:22:27,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:22:27,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:22:27,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:22:27,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:22:27,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:22:27,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:22:27,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:22:27,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:22:27,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:22:27,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:22:27,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:22:27,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:22:27,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:22:27,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:22:27,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:22:27,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:22:27,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:22:27,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:22:27,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:22:27,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:22:27,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:22:27,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:22:27,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:22:27,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:22:27,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:22:27,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:22:27,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:22:27,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:22:27,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:22:27,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:22:27,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:22:27,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:22:27,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:22:27,443 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:22:27,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:22:27,443 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:22:27,443 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:22:27,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:22:27,445 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:22:27,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:22:27,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:22:27,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:22:27,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:22:27,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:22:27,448 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:22:27,448 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:22:27,449 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:22:27,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:22:27,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:22:27,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:22:27,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:22:27,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:22:27,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:22:27,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:27,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:22:27,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:22:27,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:22:27,451 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:22:27,452 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:27,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:22:27,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:22:27,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:22:27,452 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_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2021-11-12 23:22:27,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:22:27,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:22:27,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:22:27,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:22:27,872 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:22:27,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-12 23:22:27,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/92aac5f75/35c4d03c550f45ccae0af07bd1bc930f/FLAG06dc287c6 [2021-11-12 23:22:28,868 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:22:28,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2021-11-12 23:22:28,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/92aac5f75/35c4d03c550f45ccae0af07bd1bc930f/FLAG06dc287c6 [2021-11-12 23:22:29,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/data/92aac5f75/35c4d03c550f45ccae0af07bd1bc930f [2021-11-12 23:22:29,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:22:29,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:22:29,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:29,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:22:29,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:22:29,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:29" (1/1) ... [2021-11-12 23:22:29,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f8c0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:29, skipping insertion in model container [2021-11-12 23:22:29,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:29" (1/1) ... [2021-11-12 23:22:29,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:22:29,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:29,901 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-12 23:22:29,912 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-12 23:22:29,948 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:22:29,957 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:22:31,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,535 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:31,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:22:32,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:22:32,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:22:32,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:22:32,163 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:22:32,164 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:22:32,164 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:22:32,165 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:22:32,166 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:22:32,167 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:22:32,387 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:22:32,564 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,564 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:32,726 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:22:32,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:32,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-12 23:22:32,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-12 23:22:32,804 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:22:32,805 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:22:32,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:32,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:22:32,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:22:32,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:22:32,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:22:32,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:22:32,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:22:32,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:22:32,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:22:32,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:22:32,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:22:32,943 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:22:33,051 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,051 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:33,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:22:33,281 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2021-11-12 23:22:33,282 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2021-11-12 23:22:33,283 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:22:33,284 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:22:33,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,357 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,366 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:22:33,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:22:33,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:22:33,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:22:33,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:22:33,418 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:22:33,419 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:22:33,420 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:22:33,420 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:22:33,421 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:22:33,506 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:22:33,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:22:33,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:33,869 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:22:33,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33 WrapperNode [2021-11-12 23:22:33,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:33,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:33,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:22:33,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:22:33,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:34,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:22:34,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:22:34,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:22:34,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:22:34,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:22:34,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:22:34,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:22:34,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (1/1) ... [2021-11-12 23:22:34,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:34,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:34,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:22:34,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:22:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 23:22:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 23:22:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:22:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:22:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:22:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:22:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:22:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:22:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:22:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:22:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:22:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:22:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:22:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:22:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:22:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:22:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:22:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:22:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:22:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:22:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:22:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:22:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:22:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:22:48,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:22:48,677 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:22:48,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:48 BoogieIcfgContainer [2021-11-12 23:22:48,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:22:48,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:22:48,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:22:48,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:22:48,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:22:29" (1/3) ... [2021-11-12 23:22:48,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63332777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:48, skipping insertion in model container [2021-11-12 23:22:48,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:33" (2/3) ... [2021-11-12 23:22:48,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63332777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:48, skipping insertion in model container [2021-11-12 23:22:48,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:48" (3/3) ... [2021-11-12 23:22:48,689 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_array_harness.i [2021-11-12 23:22:48,696 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:22:48,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:22:48,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:22:48,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:22:48,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:22:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-12 23:22:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 23:22:48,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:48,837 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:22:48,838 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -860547149, now seen corresponding path program 1 times [2021-11-12 23:22:48,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:48,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756071946] [2021-11-12 23:22:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:48,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:48,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:48,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:48,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:22:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:52,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:22:52,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:22:52,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:22:53,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:53,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756071946] [2021-11-12 23:22:53,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756071946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:53,070 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:53,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:22:53,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52661551] [2021-11-12 23:22:53,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:53,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:22:53,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:22:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:22:53,136 INFO L87 Difference]: Start difference. First operand has 61 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 23:22:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:53,181 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2021-11-12 23:22:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:22:53,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2021-11-12 23:22:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:53,199 INFO L225 Difference]: With dead ends: 117 [2021-11-12 23:22:53,200 INFO L226 Difference]: Without dead ends: 54 [2021-11-12 23:22:53,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:22:53,213 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:53,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:22:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-12 23:22:53,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-12 23:22:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-12 23:22:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-11-12 23:22:53,286 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 29 [2021-11-12 23:22:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:53,287 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-11-12 23:22:53,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 23:22:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-11-12 23:22:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 23:22:53,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:53,292 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:22:53,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:53,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:53,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 617864563, now seen corresponding path program 1 times [2021-11-12 23:22:53,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:53,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701128831] [2021-11-12 23:22:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:53,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:53,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:53,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:53,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:22:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:57,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:22:57,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:22:58,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:22:58,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:58,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701128831] [2021-11-12 23:22:58,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701128831] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:58,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:58,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:22:58,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775172913] [2021-11-12 23:22:58,479 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:58,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:22:58,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:22:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:22:58,483 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:22:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:58,625 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2021-11-12 23:22:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:22:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-11-12 23:22:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:58,629 INFO L225 Difference]: With dead ends: 99 [2021-11-12 23:22:58,630 INFO L226 Difference]: Without dead ends: 57 [2021-11-12 23:22:58,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:22:58,632 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:58,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 221 Invalid, 21 Unknown, 0 Unchecked, 6.72ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 115.90ms Time] [2021-11-12 23:22:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-12 23:22:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-12 23:22:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-12 23:22:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2021-11-12 23:22:58,645 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 29 [2021-11-12 23:22:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:58,646 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2021-11-12 23:22:58,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-12 23:22:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2021-11-12 23:22:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 23:22:58,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:58,648 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:22:58,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:58,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:58,875 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash 633470424, now seen corresponding path program 1 times [2021-11-12 23:22:58,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:58,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205259079] [2021-11-12 23:22:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:58,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:58,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:58,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:23:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:02,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:23:02,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:03,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:03,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:03,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205259079] [2021-11-12 23:23:03,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205259079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:03,516 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:03,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2021-11-12 23:23:03,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006931770] [2021-11-12 23:23:03,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:03,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:23:03,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:23:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:23:03,519 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 23:23:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:03,826 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2021-11-12 23:23:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:23:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2021-11-12 23:23:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:03,828 INFO L225 Difference]: With dead ends: 69 [2021-11-12 23:23:03,829 INFO L226 Difference]: Without dead ends: 67 [2021-11-12 23:23:03,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:23:03,831 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 17 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:03,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 603 Invalid, 71 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 218.15ms Time] [2021-11-12 23:23:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-12 23:23:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-11-12 23:23:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 47 states have internal predecessors, (50), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-12 23:23:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-11-12 23:23:03,845 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2021-11-12 23:23:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:03,846 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-11-12 23:23:03,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 23:23:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-11-12 23:23:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 23:23:03,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:03,848 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:23:03,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:04,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:04,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:04,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash -843890528, now seen corresponding path program 1 times [2021-11-12 23:23:04,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:04,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871892652] [2021-11-12 23:23:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:04,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:04,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:04,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:23:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:17,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:23:17,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:17,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:18,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 14 [2021-11-12 23:23:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:19,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:20,027 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:23:20,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 17 [2021-11-12 23:23:20,034 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 17 treesize of output 9 [2021-11-12 23:23:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:20,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:20,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871892652] [2021-11-12 23:23:20,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871892652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:20,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:20,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 16 [2021-11-12 23:23:20,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305708701] [2021-11-12 23:23:20,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:20,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 23:23:20,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:20,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 23:23:20,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:23:20,142 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-12 23:23:22,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:24,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:26,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:28,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:29,036 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2021-11-12 23:23:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:23:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2021-11-12 23:23:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:29,050 INFO L225 Difference]: With dead ends: 152 [2021-11-12 23:23:29,050 INFO L226 Difference]: Without dead ends: 95 [2021-11-12 23:23:29,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:23:29,055 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 54 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8658.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 8775.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:29,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 594 Invalid, 103 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 4 Unknown, 36 Unchecked, 8775.94ms Time] [2021-11-12 23:23:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-12 23:23:29,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2021-11-12 23:23:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 61 states have internal predecessors, (67), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-12 23:23:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-11-12 23:23:29,082 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 35 [2021-11-12 23:23:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:29,083 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-11-12 23:23:29,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-12 23:23:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-11-12 23:23:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 23:23:29,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:29,088 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:23:29,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:29,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:29,302 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash -585725090, now seen corresponding path program 1 times [2021-11-12 23:23:29,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:29,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266668602] [2021-11-12 23:23:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:29,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:29,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:29,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:23:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:33,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:23:33,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:33,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:33,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:33,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266668602] [2021-11-12 23:23:33,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266668602] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:33,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:33,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:23:33,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402722457] [2021-11-12 23:23:33,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:33,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:23:33,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:23:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:23:33,965 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:23:36,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:36,823 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2021-11-12 23:23:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:23:36,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2021-11-12 23:23:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:36,826 INFO L225 Difference]: With dead ends: 130 [2021-11-12 23:23:36,826 INFO L226 Difference]: Without dead ends: 76 [2021-11-12 23:23:36,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:23:36,829 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 3 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2545.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 2643.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:36,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 261 Invalid, 46 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 1 Unknown, 14 Unchecked, 2643.96ms Time] [2021-11-12 23:23:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-12 23:23:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-11-12 23:23:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-12 23:23:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-11-12 23:23:36,838 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 35 [2021-11-12 23:23:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:36,839 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-11-12 23:23:36,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:23:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-11-12 23:23:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-12 23:23:36,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:36,840 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:23:36,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:23:37,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:37,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1626961765, now seen corresponding path program 1 times [2021-11-12 23:23:37,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:37,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508350031] [2021-11-12 23:23:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:37,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:37,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:37,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:37,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:23:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:40,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:23:40,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:41,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:41,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:41,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508350031] [2021-11-12 23:23:41,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508350031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:41,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:41,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:23:41,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123873841] [2021-11-12 23:23:41,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:41,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:23:41,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:23:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:23:41,717 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:23:43,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:45,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:46,704 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2021-11-12 23:23:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:23:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2021-11-12 23:23:46,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:46,707 INFO L225 Difference]: With dead ends: 126 [2021-11-12 23:23:46,708 INFO L226 Difference]: Without dead ends: 79 [2021-11-12 23:23:46,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:23:46,709 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 20 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4513.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 4619.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:46,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 250 Invalid, 54 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 2 Unknown, 19 Unchecked, 4619.36ms Time] [2021-11-12 23:23:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-12 23:23:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2021-11-12 23:23:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 states have internal predecessors, (57), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-12 23:23:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2021-11-12 23:23:46,718 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 37 [2021-11-12 23:23:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:46,719 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2021-11-12 23:23:46,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:23:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2021-11-12 23:23:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-12 23:23:46,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:46,721 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:23:46,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:23:46,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:46,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1966940953, now seen corresponding path program 1 times [2021-11-12 23:23:46,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:46,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468349042] [2021-11-12 23:23:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:46,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:46,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:46,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:46,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:23:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:50,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:23:50,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:54,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:23:57,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:57,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468349042] [2021-11-12 23:23:57,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468349042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:57,043 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:23:57,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 23 [2021-11-12 23:23:57,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994070915] [2021-11-12 23:23:57,044 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:57,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-12 23:23:57,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-12 23:23:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:23:57,046 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 23:23:59,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:01,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:07,965 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-11-12 23:24:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:24:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2021-11-12 23:24:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:07,967 INFO L225 Difference]: With dead ends: 86 [2021-11-12 23:24:07,967 INFO L226 Difference]: Without dead ends: 84 [2021-11-12 23:24:07,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=149, Invalid=906, Unknown=1, NotChecked=0, Total=1056 [2021-11-12 23:24:07,968 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5009.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.45ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 5141.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:07,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 855 Invalid, 321 Unknown, 0 Unchecked, 6.45ms Time], IncrementalHoareTripleChecker [20 Valid, 234 Invalid, 2 Unknown, 65 Unchecked, 5141.11ms Time] [2021-11-12 23:24:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-12 23:24:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2021-11-12 23:24:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 states have internal predecessors, (57), 12 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-12 23:24:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-11-12 23:24:07,977 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2021-11-12 23:24:07,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:07,978 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-11-12 23:24:07,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 19 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 23:24:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-11-12 23:24:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:24:07,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:07,980 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:24:08,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:08,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:08,186 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1038585084, now seen corresponding path program 1 times [2021-11-12 23:24:08,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:08,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053899264] [2021-11-12 23:24:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:08,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:08,191 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:08,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:24:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:11,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:24:11,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:24:12,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:24:12,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:12,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053899264] [2021-11-12 23:24:12,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053899264] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:12,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:12,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:24:12,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522457942] [2021-11-12 23:24:12,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:12,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:12,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:24:12,436 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-12 23:24:12,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:12,546 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-11-12 23:24:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2021-11-12 23:24:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:12,550 INFO L225 Difference]: With dead ends: 101 [2021-11-12 23:24:12,551 INFO L226 Difference]: Without dead ends: 73 [2021-11-12 23:24:12,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:24:12,552 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 19 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:12,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 199 Invalid, 25 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 103.83ms Time] [2021-11-12 23:24:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-12 23:24:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-12 23:24:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-12 23:24:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-11-12 23:24:12,560 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 44 [2021-11-12 23:24:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:12,560 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-11-12 23:24:12,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-12 23:24:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-11-12 23:24:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 23:24:12,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:12,562 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:24:12,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:12,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:12,769 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:12,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1442491607, now seen corresponding path program 1 times [2021-11-12 23:24:12,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:12,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321289803] [2021-11-12 23:24:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:12,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:12,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:12,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:24:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:16,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-12 23:24:16,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:16,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:16,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 82 [2021-11-12 23:24:24,618 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-11-12 23:24:24,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 28 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 639 treesize of output 223 [2021-11-12 23:24:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:24:25,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:24:34,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:34,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321289803] [2021-11-12 23:24:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321289803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:24:34,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [603691782] [2021-11-12 23:24:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:34,583 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:34,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:24:34,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:24:34,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:24:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:24:41,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:24:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-12 23:24:43,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [603691782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:43,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:24:43,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [24, 15] total 41 [2021-11-12 23:24:43,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313768515] [2021-11-12 23:24:43,160 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:43,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:24:43,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:24:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2021-11-12 23:24:43,162 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:24:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:43,646 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2021-11-12 23:24:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:24:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 46 [2021-11-12 23:24:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:43,648 INFO L225 Difference]: With dead ends: 85 [2021-11-12 23:24:43,648 INFO L226 Difference]: Without dead ends: 83 [2021-11-12 23:24:43,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2021-11-12 23:24:43,650 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 18 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:43,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 455 Invalid, 54 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 128.27ms Time] [2021-11-12 23:24:43,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-12 23:24:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-11-12 23:24:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 61 states have internal predecessors, (62), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-11-12 23:24:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-11-12 23:24:43,660 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 46 [2021-11-12 23:24:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:43,660 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-11-12 23:24:43,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:24:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-11-12 23:24:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-12 23:24:43,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:43,662 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:24:43,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 23:24:43,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:44,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:44,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash 979191153, now seen corresponding path program 1 times [2021-11-12 23:24:44,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:44,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679376796] [2021-11-12 23:24:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:44,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:44,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:44,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:44,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:24:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:47,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-12 23:24:47,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:48,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:48,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 82 [2021-11-12 23:24:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:24:54,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-12 23:25:02,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:02,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679376796] [2021-11-12 23:25:02,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679376796] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:02,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1080280451] [2021-11-12 23:25:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:02,355 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:02,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:02,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d2c1f9-aa7b-457e-bd4e-aee9751381e8/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:25:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:06,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:25:06,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:07,088 INFO L354 Elim1Store]: treesize reduction 1434, result has 0.6 percent of original size [2021-11-12 23:25:07,088 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 8 case distinctions, treesize of input 102 treesize of output 14 [2021-11-12 23:25:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:25:13,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:16,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:25:16,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 535 [2021-11-12 23:25:19,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:25:19,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14632874302 treesize of output 14363390264