./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:42,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:42,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:42,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:42,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:42,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:42,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:42,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:42,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:42,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:42,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:42,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:42,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:42,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:42,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:42,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:42,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:42,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:42,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:42,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:42,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:42,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:42,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:42,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:42,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:42,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:42,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:42,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:42,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:42,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:42,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:42,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:42,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:42,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:42,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:42,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:42,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:42,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:42,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:42,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:42,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:42,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:44:42,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:42,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:42,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:42,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:42,749 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:42,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:42,750 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:42,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:44:42,750 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:42,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:42,751 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:44:42,752 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:44:42,752 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:42,752 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:44:42,752 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:44:42,752 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:44:42,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:42,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:44:42,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:42,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:42,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:42,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:42,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:42,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:42,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:42,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:42,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:42,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:42,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:42,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:42,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:42,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:42,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:44:42,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:44:42,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:42,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:42,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:42,757 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_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2021-11-19 14:44:43,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:43,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:43,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:43,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:43,124 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:43,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-19 14:44:43,231 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/55cebc3c5/0eb4da1360944615b5eaff226b26873d/FLAG2c1801c73 [2021-11-19 14:44:44,127 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:44,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-19 14:44:44,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/55cebc3c5/0eb4da1360944615b5eaff226b26873d/FLAG2c1801c73 [2021-11-19 14:44:44,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/55cebc3c5/0eb4da1360944615b5eaff226b26873d [2021-11-19 14:44:44,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:44,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:44,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:44,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:44,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:44,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:44" (1/1) ... [2021-11-19 14:44:44,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ea1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:44, skipping insertion in model container [2021-11-19 14:44:44,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:44" (1/1) ... [2021-11-19 14:44:44,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:44,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:45,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-19 14:44:45,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-19 14:44:45,076 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:45,086 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:46,244 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,246 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,247 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,248 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,265 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,266 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,268 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,269 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,276 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,277 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,278 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,279 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:46,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:46,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:46,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:46,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:46,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:46,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:46,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:46,869 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:46,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:46,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:47,075 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:47,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:47,109 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:47,209 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:47,209 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:47,374 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:47,429 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:44:47,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@628ab522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:47, skipping insertion in model container [2021-11-19 14:44:47,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:47,430 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:44:47,433 INFO L158 Benchmark]: Toolchain (without parser) took 2858.78ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 48.2MB in the beginning and 89.1MB in the end (delta: -40.9MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2021-11-19 14:44:47,434 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 75.1MB in the beginning and 75.1MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:44:47,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2854.03ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 48.0MB in the beginning and 89.1MB in the end (delta: -41.1MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2021-11-19 14:44:47,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory was 75.1MB in the beginning and 75.1MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2854.03ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 48.0MB in the beginning and 89.1MB in the end (delta: -41.1MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: 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_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:49,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:49,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:50,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:50,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:50,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:50,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:50,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:50,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:50,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:50,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:50,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:50,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:50,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:50,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:50,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:50,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:50,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:50,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:50,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:50,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:50,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:50,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:50,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:50,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:50,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:50,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:50,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:50,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:50,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:50,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:50,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:50,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:50,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:50,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:50,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:50,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:50,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:50,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:50,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:50,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:50,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:44:50,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:50,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:50,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:50,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:50,133 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:50,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:50,136 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:50,137 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:50,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:50,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:50,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:50,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:50,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:50,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:50,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:50,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:50,141 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:44:50,141 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:44:50,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:50,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:50,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:50,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:50,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:44:50,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:50,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:50,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:50,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:50,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:50,144 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:44:50,144 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:44:50,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:50,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:50,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:50,145 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_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2021-11-19 14:44:50,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:50,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:50,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:50,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:50,617 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:50,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-19 14:44:50,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/6c8dfd203/6e3408420a19414397943a36c63bcef7/FLAGe1fa516b6 [2021-11-19 14:44:51,817 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:51,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-19 14:44:51,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/6c8dfd203/6e3408420a19414397943a36c63bcef7/FLAGe1fa516b6 [2021-11-19 14:44:52,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/data/6c8dfd203/6e3408420a19414397943a36c63bcef7 [2021-11-19 14:44:52,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:52,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:52,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:52,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:52,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:52,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:52" (1/1) ... [2021-11-19 14:44:52,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a88bff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:52, skipping insertion in model container [2021-11-19 14:44:52,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:52" (1/1) ... [2021-11-19 14:44:52,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:52,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:52,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-19 14:44:52,705 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-19 14:44:52,743 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:52,752 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:54,238 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,239 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,240 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,241 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,242 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,286 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,288 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,288 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,291 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,292 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,293 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,294 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:54,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:54,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:54,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:54,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:54,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:54,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:54,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:54,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:54,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:54,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:55,145 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:55,171 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,179 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,335 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,336 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,490 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:55,581 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:44:55,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:55,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-19 14:44:55,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-19 14:44:55,660 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:55,661 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:55,719 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,720 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,720 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,730 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,736 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,738 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,739 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,740 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,741 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,805 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:55,806 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:55,807 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:55,808 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:55,812 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:55,813 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:55,813 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:55,814 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:55,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:55,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:55,847 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:55,877 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,885 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:55,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,003 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:56,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:44:56,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-19 14:44:56,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-19 14:44:56,108 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:44:56,109 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:44:56,144 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,145 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,146 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,146 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,148 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,154 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,155 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,156 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,157 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,157 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,158 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,159 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,159 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:44:56,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:44:56,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:44:56,200 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:44:56,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:44:56,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:44:56,203 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:44:56,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:44:56,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:44:56,206 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:44:56,235 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:44:56,253 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,301 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,427 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,428 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:44:56,538 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:56,909 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:44:56,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56 WrapperNode [2021-11-19 14:44:56,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:56,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:56,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:44:56,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:44:56,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,173 INFO L137 Inliner]: procedures = 717, calls = 3055, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 964 [2021-11-19 14:44:57,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:57,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:44:57,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:44:57,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:44:57,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:44:57,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:44:57,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:44:57,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:44:57,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (1/1) ... [2021-11-19 14:44:57,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:57,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:44:57,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:44:57,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:44:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-19 14:44:57,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-19 14:44:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:44:57,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:44:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:44:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-19 14:44:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:44:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:44:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:44:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:44:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:44:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:44:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-11-19 14:44:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:44:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:44:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:44:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:44:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:44:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:44:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:44:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:44:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:44:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:44:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:44:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:44:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:44:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:44:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:44:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:44:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 14:44:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 14:44:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:44:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:44:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:44:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-19 14:44:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-19 14:44:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:44:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:44:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:44:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:44:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-19 14:44:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-19 14:44:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:44:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:44:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:44:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:44:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:44:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-11-19 14:44:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-11-19 14:44:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-19 14:44:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:44:57,452 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:44:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:44:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:44:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:44:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:44:57,765 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:44:57,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:45:04,589 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:45:04,606 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:45:04,607 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:45:04,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:04 BoogieIcfgContainer [2021-11-19 14:45:04,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:45:04,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:45:04,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:45:04,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:45:04,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:44:52" (1/3) ... [2021-11-19 14:45:04,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edec208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:04, skipping insertion in model container [2021-11-19 14:45:04,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:56" (2/3) ... [2021-11-19 14:45:04,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edec208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:04, skipping insertion in model container [2021-11-19 14:45:04,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:04" (3/3) ... [2021-11-19 14:45:04,620 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2021-11-19 14:45:04,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:45:04,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:45:04,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:45:04,733 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:45:04,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:45:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-19 14:45:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:45:04,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:04,779 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:04,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1892676938, now seen corresponding path program 1 times [2021-11-19 14:45:04,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:04,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020554372] [2021-11-19 14:45:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:04,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:04,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:04,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:45:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:05,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:45:05,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-19 14:45:06,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:45:06,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:06,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020554372] [2021-11-19 14:45:06,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020554372] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:06,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:06,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:45:06,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089964658] [2021-11-19 14:45:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:06,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:45:06,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:45:06,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:45:06,502 INFO L87 Difference]: Start difference. First operand has 183 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 14:45:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:06,583 INFO L93 Difference]: Finished difference Result 357 states and 513 transitions. [2021-11-19 14:45:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:45:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2021-11-19 14:45:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:06,606 INFO L225 Difference]: With dead ends: 357 [2021-11-19 14:45:06,607 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 14:45:06,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:45:06,624 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:06,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:45:06,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 14:45:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-19 14:45:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 117 states have internal predecessors, (146), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-19 14:45:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 241 transitions. [2021-11-19 14:45:06,721 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 241 transitions. Word has length 64 [2021-11-19 14:45:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:06,723 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 241 transitions. [2021-11-19 14:45:06,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 14:45:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 241 transitions. [2021-11-19 14:45:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:45:06,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:06,737 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:06,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:06,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:06,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1372550286, now seen corresponding path program 1 times [2021-11-19 14:45:06,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:06,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028956878] [2021-11-19 14:45:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:06,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:06,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:06,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:45:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:07,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:45:07,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:08,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:45:08,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:08,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028956878] [2021-11-19 14:45:08,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028956878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:08,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:08,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:45:08,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055688529] [2021-11-19 14:45:08,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:08,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:45:08,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:45:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:45:08,671 INFO L87 Difference]: Start difference. First operand 178 states and 241 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:45:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:09,018 INFO L93 Difference]: Finished difference Result 317 states and 437 transitions. [2021-11-19 14:45:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:45:09,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 64 [2021-11-19 14:45:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:09,024 INFO L225 Difference]: With dead ends: 317 [2021-11-19 14:45:09,024 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 14:45:09,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:45:09,026 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 74 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:09,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 592 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:45:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 14:45:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 14:45:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.2542372881355932) internal successors, (148), 120 states have internal predecessors, (148), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2021-11-19 14:45:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2021-11-19 14:45:09,053 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 64 [2021-11-19 14:45:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:09,054 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2021-11-19 14:45:09,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 14:45:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2021-11-19 14:45:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 14:45:09,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:09,057 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:09,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:09,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:09,283 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -333611875, now seen corresponding path program 1 times [2021-11-19 14:45:09,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:09,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744705372] [2021-11-19 14:45:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:09,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:09,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:09,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:09,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:45:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:10,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:45:10,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:10,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:45:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:11,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:12,815 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 40 treesize of output 34 [2021-11-19 14:45:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:45:13,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:13,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744705372] [2021-11-19 14:45:13,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744705372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:13,180 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:13,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 18 [2021-11-19 14:45:13,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157591975] [2021-11-19 14:45:13,181 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:13,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:45:13,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:45:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:45:13,183 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 15 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-19 14:45:15,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:17,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:19,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:21,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:23,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:28,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:30,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:32,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:34,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:36,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:36,891 INFO L93 Difference]: Finished difference Result 345 states and 474 transitions. [2021-11-19 14:45:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:45:36,893 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 15 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2021-11-19 14:45:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:36,897 INFO L225 Difference]: With dead ends: 345 [2021-11-19 14:45:36,897 INFO L226 Difference]: Without dead ends: 199 [2021-11-19 14:45:36,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:45:36,900 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 41 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:36,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2767 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 10 Unknown, 81 Unchecked, 23.4s Time] [2021-11-19 14:45:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-19 14:45:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-11-19 14:45:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 136 states have internal predecessors, (166), 48 states have call successors, (48), 14 states have call predecessors, (48), 16 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-11-19 14:45:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 271 transitions. [2021-11-19 14:45:36,926 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 271 transitions. Word has length 70 [2021-11-19 14:45:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:36,927 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 271 transitions. [2021-11-19 14:45:36,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 15 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-19 14:45:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 271 transitions. [2021-11-19 14:45:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 14:45:36,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:36,930 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:36,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:37,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:37,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2115988255, now seen corresponding path program 1 times [2021-11-19 14:45:37,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:37,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557720604] [2021-11-19 14:45:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:37,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:37,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:37,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:45:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:38,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:45:38,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:38,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:45:38,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:38,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557720604] [2021-11-19 14:45:38,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557720604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:38,785 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:38,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:45:38,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490896655] [2021-11-19 14:45:38,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:38,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:38,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:38,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:38,787 INFO L87 Difference]: Start difference. First operand 198 states and 271 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:45:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:38,889 INFO L93 Difference]: Finished difference Result 351 states and 493 transitions. [2021-11-19 14:45:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:45:38,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2021-11-19 14:45:38,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:38,897 INFO L225 Difference]: With dead ends: 351 [2021-11-19 14:45:38,897 INFO L226 Difference]: Without dead ends: 204 [2021-11-19 14:45:38,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:45:38,902 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:38,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 715 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-19 14:45:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-11-19 14:45:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 128 states have (on average 1.25) internal successors, (160), 130 states have internal predecessors, (160), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:45:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 264 transitions. [2021-11-19 14:45:38,938 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 264 transitions. Word has length 70 [2021-11-19 14:45:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:38,939 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 264 transitions. [2021-11-19 14:45:38,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:45:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 264 transitions. [2021-11-19 14:45:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 14:45:38,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:38,941 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:38,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:39,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:39,163 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 547181989, now seen corresponding path program 1 times [2021-11-19 14:45:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:39,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650712951] [2021-11-19 14:45:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:39,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:39,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:39,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:45:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:40,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:45:40,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:41,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:45:41,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:41,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650712951] [2021-11-19 14:45:41,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650712951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:41,960 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:41,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:45:41,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68107823] [2021-11-19 14:45:41,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:41,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:45:41,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:41,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:45:41,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:41,962 INFO L87 Difference]: Start difference. First operand 192 states and 264 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:45:44,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:47,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:47,988 INFO L93 Difference]: Finished difference Result 366 states and 521 transitions. [2021-11-19 14:45:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:47,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2021-11-19 14:45:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:47,995 INFO L225 Difference]: With dead ends: 366 [2021-11-19 14:45:47,995 INFO L226 Difference]: Without dead ends: 221 [2021-11-19 14:45:47,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:45:47,997 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 85 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:47,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 913 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 2 Unknown, 53 Unchecked, 5.6s Time] [2021-11-19 14:45:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-19 14:45:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2021-11-19 14:45:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 139 states have internal predecessors, (172), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:45:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 276 transitions. [2021-11-19 14:45:48,020 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 276 transitions. Word has length 74 [2021-11-19 14:45:48,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:48,021 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 276 transitions. [2021-11-19 14:45:48,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:45:48,021 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 276 transitions. [2021-11-19 14:45:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 14:45:48,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:48,023 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:48,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:48,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:48,243 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -824625309, now seen corresponding path program 1 times [2021-11-19 14:45:48,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:48,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064311920] [2021-11-19 14:45:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:48,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:48,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:48,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:48,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:45:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:49,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:45:49,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 14:45:51,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 14:45:54,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:54,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064311920] [2021-11-19 14:45:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064311920] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:45:54,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:45:54,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 14:45:54,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696802139] [2021-11-19 14:45:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:54,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:45:54,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:45:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:45:54,183 INFO L87 Difference]: Start difference. First operand 201 states and 276 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:45:56,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:58,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:04,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:06,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:07,404 INFO L93 Difference]: Finished difference Result 365 states and 519 transitions. [2021-11-19 14:46:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:46:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-11-19 14:46:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:07,410 INFO L225 Difference]: With dead ends: 365 [2021-11-19 14:46:07,411 INFO L226 Difference]: Without dead ends: 210 [2021-11-19 14:46:07,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:46:07,413 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 38 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:07,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2247 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 4 Unknown, 348 Unchecked, 11.3s Time] [2021-11-19 14:46:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-19 14:46:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 202. [2021-11-19 14:46:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 140 states have internal predecessors, (171), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:46:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 275 transitions. [2021-11-19 14:46:07,450 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 275 transitions. Word has length 74 [2021-11-19 14:46:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:07,451 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 275 transitions. [2021-11-19 14:46:07,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:46:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 275 transitions. [2021-11-19 14:46:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 14:46:07,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:07,460 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:07,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:07,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:07,674 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1440668327, now seen corresponding path program 1 times [2021-11-19 14:46:07,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:07,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703444816] [2021-11-19 14:46:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:07,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:07,677 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:07,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:46:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:08,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:46:08,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:46:08,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:09,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:09,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703444816] [2021-11-19 14:46:09,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703444816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:09,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:09,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:46:09,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404902502] [2021-11-19 14:46:09,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:09,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:09,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:09,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:09,168 INFO L87 Difference]: Start difference. First operand 202 states and 275 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:46:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:09,277 INFO L93 Difference]: Finished difference Result 361 states and 506 transitions. [2021-11-19 14:46:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:46:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2021-11-19 14:46:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:09,280 INFO L225 Difference]: With dead ends: 361 [2021-11-19 14:46:09,281 INFO L226 Difference]: Without dead ends: 206 [2021-11-19 14:46:09,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:46:09,284 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 34 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:09,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 706 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-19 14:46:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2021-11-19 14:46:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.2238805970149254) internal successors, (164), 136 states have internal predecessors, (164), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:46:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2021-11-19 14:46:09,302 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 74 [2021-11-19 14:46:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:09,303 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2021-11-19 14:46:09,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:46:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2021-11-19 14:46:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 14:46:09,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:09,305 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:09,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:09,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:09,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:09,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash 543275049, now seen corresponding path program 1 times [2021-11-19 14:46:09,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:09,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134427418] [2021-11-19 14:46:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:09,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:09,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:09,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:46:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:10,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:46:10,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 14:46:10,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 14:46:11,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:11,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134427418] [2021-11-19 14:46:11,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134427418] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:11,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:11,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:46:11,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421243763] [2021-11-19 14:46:11,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:11,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:11,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:11,374 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:46:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:12,007 INFO L93 Difference]: Finished difference Result 360 states and 498 transitions. [2021-11-19 14:46:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:46:12,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-11-19 14:46:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:12,011 INFO L225 Difference]: With dead ends: 360 [2021-11-19 14:46:12,011 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 14:46:12,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:46:12,013 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 12 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:12,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1781 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:46:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 14:46:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2021-11-19 14:46:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.2238805970149254) internal successors, (164), 136 states have internal predecessors, (164), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:46:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2021-11-19 14:46:12,041 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 74 [2021-11-19 14:46:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:12,042 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2021-11-19 14:46:12,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:46:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2021-11-19 14:46:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 14:46:12,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:12,044 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:12,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:12,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:12,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash -873688690, now seen corresponding path program 1 times [2021-11-19 14:46:12,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:12,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865227604] [2021-11-19 14:46:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:12,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:12,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:12,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:12,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:46:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:13,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:46:13,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:46:13,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:13,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:13,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865227604] [2021-11-19 14:46:13,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865227604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:13,834 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:13,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:46:13,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560256109] [2021-11-19 14:46:13,834 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:13,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:13,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:46:13,836 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:46:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:14,323 INFO L93 Difference]: Finished difference Result 357 states and 490 transitions. [2021-11-19 14:46:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2021-11-19 14:46:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:14,331 INFO L225 Difference]: With dead ends: 357 [2021-11-19 14:46:14,332 INFO L226 Difference]: Without dead ends: 216 [2021-11-19 14:46:14,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:46:14,336 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 68 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:14,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 888 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:46:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-19 14:46:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2021-11-19 14:46:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 138 states have internal predecessors, (166), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:46:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2021-11-19 14:46:14,371 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 76 [2021-11-19 14:46:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:14,375 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2021-11-19 14:46:14,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:46:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2021-11-19 14:46:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 14:46:14,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:14,379 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:14,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:14,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:14,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1007702196, now seen corresponding path program 1 times [2021-11-19 14:46:14,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:14,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584816301] [2021-11-19 14:46:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:14,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:14,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:14,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:14,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:46:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:15,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:46:15,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:16,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:16,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:16,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584816301] [2021-11-19 14:46:16,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584816301] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:16,594 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:16,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-19 14:46:16,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095825025] [2021-11-19 14:46:16,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:16,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:16,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:16,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:16,595 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:46:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:17,393 INFO L93 Difference]: Finished difference Result 208 states and 279 transitions. [2021-11-19 14:46:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:46:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2021-11-19 14:46:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:17,397 INFO L225 Difference]: With dead ends: 208 [2021-11-19 14:46:17,397 INFO L226 Difference]: Without dead ends: 206 [2021-11-19 14:46:17,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:46:17,398 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 73 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:17,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1179 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:46:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-19 14:46:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2021-11-19 14:46:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 141 states have internal predecessors, (169), 48 states have call successors, (48), 15 states have call predecessors, (48), 16 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-19 14:46:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 273 transitions. [2021-11-19 14:46:17,417 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 273 transitions. Word has length 76 [2021-11-19 14:46:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:17,417 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 273 transitions. [2021-11-19 14:46:17,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 14:46:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 273 transitions. [2021-11-19 14:46:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 14:46:17,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:17,420 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:17,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:17,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:17,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1610826330, now seen corresponding path program 1 times [2021-11-19 14:46:17,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:17,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932949306] [2021-11-19 14:46:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:17,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:17,640 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:17,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:46:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:18,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-19 14:46:18,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:23,755 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-19 14:46:23,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 580 treesize of output 196 [2021-11-19 14:46:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:46:24,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:26,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:26,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932949306] [2021-11-19 14:46:26,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932949306] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:26,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:26,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-19 14:46:26,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85403694] [2021-11-19 14:46:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:26,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:46:26,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:46:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:46:26,622 INFO L87 Difference]: Start difference. First operand 204 states and 273 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:46:28,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:30,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:39,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:41,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:42,390 INFO L93 Difference]: Finished difference Result 274 states and 382 transitions. [2021-11-19 14:46:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:46:42,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2021-11-19 14:46:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:42,399 INFO L225 Difference]: With dead ends: 274 [2021-11-19 14:46:42,399 INFO L226 Difference]: Without dead ends: 272 [2021-11-19 14:46:42,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:46:42,401 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 49 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:42,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1326 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 247 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2021-11-19 14:46:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-19 14:46:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 230. [2021-11-19 14:46:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 158 states have (on average 1.2278481012658229) internal successors, (194), 161 states have internal predecessors, (194), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (64), 52 states have call predecessors, (64), 53 states have call successors, (64) [2021-11-19 14:46:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 312 transitions. [2021-11-19 14:46:42,426 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 312 transitions. Word has length 82 [2021-11-19 14:46:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:42,427 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 312 transitions. [2021-11-19 14:46:42,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:46:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 312 transitions. [2021-11-19 14:46:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:46:42,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:42,430 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:42,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:42,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:42,643 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash 279527167, now seen corresponding path program 1 times [2021-11-19 14:46:42,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312098014] [2021-11-19 14:46:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:42,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:42,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:42,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:46:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:43,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:46:43,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:44,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:46:44,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:44,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312098014] [2021-11-19 14:46:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312098014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:44,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:44,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:46:44,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171518886] [2021-11-19 14:46:44,478 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:44,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:46:44,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:46:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:44,479 INFO L87 Difference]: Start difference. First operand 230 states and 312 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:46:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:44,678 INFO L93 Difference]: Finished difference Result 384 states and 528 transitions. [2021-11-19 14:46:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:44,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 83 [2021-11-19 14:46:44,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:44,686 INFO L225 Difference]: With dead ends: 384 [2021-11-19 14:46:44,686 INFO L226 Difference]: Without dead ends: 305 [2021-11-19 14:46:44,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:44,689 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 24 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:44,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 741 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:46:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-19 14:46:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 286. [2021-11-19 14:46:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 198 states have (on average 1.2323232323232323) internal successors, (244), 201 states have internal predecessors, (244), 70 states have call successors, (70), 16 states have call predecessors, (70), 17 states have return successors, (84), 68 states have call predecessors, (84), 69 states have call successors, (84) [2021-11-19 14:46:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2021-11-19 14:46:44,729 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 83 [2021-11-19 14:46:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:44,731 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2021-11-19 14:46:44,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:46:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2021-11-19 14:46:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 14:46:44,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:44,735 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:44,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:44,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:44,951 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2113575910, now seen corresponding path program 1 times [2021-11-19 14:46:44,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:44,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108264095] [2021-11-19 14:46:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:44,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:44,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:44,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:46:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:46,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:46:46,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:49,061 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-19 14:46:49,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 531 treesize of output 179 [2021-11-19 14:46:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:46:49,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:52,907 INFO L354 Elim1Store]: treesize reduction 1168, result has 0.1 percent of original size [2021-11-19 14:46:52,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 680 treesize of output 1 [2021-11-19 14:46:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:46:53,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:53,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108264095] [2021-11-19 14:46:53,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108264095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:53,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:53,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-19 14:46:53,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983225998] [2021-11-19 14:46:53,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:53,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:46:53,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:46:53,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=126, Unknown=1, NotChecked=0, Total=156 [2021-11-19 14:46:53,095 INFO L87 Difference]: Start difference. First operand 286 states and 398 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 8 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-19 14:46:55,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:57,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:59,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:01,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:05,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:12,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:14,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:16,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:18,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:20,701 INFO L93 Difference]: Finished difference Result 340 states and 481 transitions. [2021-11-19 14:47:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:47:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 8 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 88 [2021-11-19 14:47:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:20,707 INFO L225 Difference]: With dead ends: 340 [2021-11-19 14:47:20,707 INFO L226 Difference]: Without dead ends: 338 [2021-11-19 14:47:20,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=58, Invalid=213, Unknown=1, NotChecked=0, Total=272 [2021-11-19 14:47:20,709 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 103 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 12 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:20,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2619 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 494 Invalid, 8 Unknown, 27 Unchecked, 26.5s Time] [2021-11-19 14:47:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-19 14:47:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 292. [2021-11-19 14:47:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 202 states have (on average 1.2277227722772277) internal successors, (248), 205 states have internal predecessors, (248), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (85), 69 states have call predecessors, (85), 70 states have call successors, (85) [2021-11-19 14:47:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 404 transitions. [2021-11-19 14:47:20,746 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 404 transitions. Word has length 88 [2021-11-19 14:47:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:20,747 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 404 transitions. [2021-11-19 14:47:20,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 8 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-19 14:47:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 404 transitions. [2021-11-19 14:47:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:47:20,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:20,751 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:20,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:20,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:20,967 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1375966178, now seen corresponding path program 1 times [2021-11-19 14:47:20,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:20,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728925349] [2021-11-19 14:47:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:20,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:20,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:20,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:20,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bc3b9f-684f-480e-92a3-80590f053046/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:47:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:21,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:47:21,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:23,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:47:23,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 14:47:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-19 14:47:23,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:24,566 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 14:47:24,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1 [2021-11-19 14:47:35,929 WARN L227 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:47:35,935 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 14:47:35,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771