./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:09,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:09,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:09,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:09,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:09,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:09,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:09,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:09,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:09,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:09,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:09,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:09,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:09,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:09,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:09,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:09,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:09,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:09,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:09,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:09,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:09,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:09,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:09,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:09,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:09,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:09,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:09,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:09,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:09,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:09,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:09,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:09,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:09,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:09,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:09,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:09,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:09,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:09,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:09,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:09,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:09,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:52:09,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:09,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:09,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:09,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:09,835 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:09,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:09,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:09,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:52:09,842 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:09,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:09,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:52:09,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:52:09,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:09,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:52:09,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:52:09,846 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:52:09,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:09,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:09,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:09,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:09,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:09,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:09,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:09,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:09,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:09,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:09,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:09,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:09,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:09,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:09,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:09,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:09,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:52:09,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:52:09,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:09,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:09,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:09,854 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_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2021-11-12 22:52:10,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:10,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:10,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:10,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:10,181 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:10,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-12 22:52:10,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/14e49cc53/1ec09d68577a4586a175a81c5042bfef/FLAG1b4b6fd7e [2021-11-12 22:52:11,169 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:11,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-12 22:52:11,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/14e49cc53/1ec09d68577a4586a175a81c5042bfef/FLAG1b4b6fd7e [2021-11-12 22:52:11,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/14e49cc53/1ec09d68577a4586a175a81c5042bfef [2021-11-12 22:52:11,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:11,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:11,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:11,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:11,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:11,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1c7966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11, skipping insertion in model container [2021-11-12 22:52:11,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:11,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:12,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-12 22:52:12,240 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-12 22:52:12,273 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:52:12,283 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:52:13,489 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,491 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,492 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,494 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,510 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:13,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:14,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:52:14,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:52:14,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:52:14,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:52:14,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:52:14,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:52:14,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:52:14,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:52:14,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:52:14,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:52:14,304 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:52:14,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:14,343 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:14,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:14,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:14,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:14,644 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:52:14,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3335296b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:14, skipping insertion in model container [2021-11-12 22:52:14,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:14,645 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:52:14,650 INFO L158 Benchmark]: Toolchain (without parser) took 2984.76ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 71.7MB in the beginning and 84.7MB in the end (delta: -12.9MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2021-11-12 22:52:14,651 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:14,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2977.54ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 71.5MB in the beginning and 84.7MB in the end (delta: -13.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2021-11-12 22:52:14,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2977.54ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 71.5MB in the beginning and 84.7MB in the end (delta: -13.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:17,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:17,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:17,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:17,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:17,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:17,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:17,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:17,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:17,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:17,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:17,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:17,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:17,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:17,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:17,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:17,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:17,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:17,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:17,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:17,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:17,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:17,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:17,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:17,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:17,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:17,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:17,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:17,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:17,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:17,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:17,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:17,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:17,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:17,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:17,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:17,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:17,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:17,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:17,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:17,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:17,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:52:17,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:17,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:17,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:17,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:17,318 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:17,318 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:17,318 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:17,319 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:17,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:17,319 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:17,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:17,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:17,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:17,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:17,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:17,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:17,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:52:17,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:52:17,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:17,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:17,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:17,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:17,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:52:17,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:17,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:17,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:17,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:17,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:17,328 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:52:17,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:17,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:17,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:17,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:17,329 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_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2021-11-12 22:52:17,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:17,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:17,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:17,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:17,859 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:17,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-12 22:52:17,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/b24a56a92/f20a736976c048ac8536ad243828a770/FLAG1a71510c8 [2021-11-12 22:52:18,926 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:18,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-12 22:52:18,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/b24a56a92/f20a736976c048ac8536ad243828a770/FLAG1a71510c8 [2021-11-12 22:52:19,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/data/b24a56a92/f20a736976c048ac8536ad243828a770 [2021-11-12 22:52:19,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:19,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:19,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:19,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:19,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:19,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:19" (1/1) ... [2021-11-12 22:52:19,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abc4d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:19, skipping insertion in model container [2021-11-12 22:52:19,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:19" (1/1) ... [2021-11-12 22:52:19,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:19,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:19,823 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-12 22:52:19,833 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-12 22:52:19,869 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:52:19,877 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:52:20,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,959 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:20,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:21,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:52:21,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:52:21,552 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:52:21,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:52:21,567 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:52:21,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:52:21,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:52:21,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:52:21,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:52:21,583 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:52:21,799 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:52:21,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:21,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:21,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:21,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:22,108 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:52:22,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:22,201 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-12 22:52:22,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-12 22:52:22,203 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:52:22,204 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:52:22,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:52:22,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:52:22,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:52:22,333 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:52:22,335 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:52:22,335 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:52:22,336 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:52:22,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:52:22,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:52:22,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:52:22,366 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:52:22,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:22,558 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:52:22,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-12 22:52:22,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-12 22:52:22,574 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:52:22,575 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:52:22,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,628 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,629 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:52:22,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:52:22,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:52:22,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:52:22,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:52:22,679 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:52:22,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:52:22,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:52:22,681 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:52:22,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:52:22,763 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:52:22,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,865 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:52:22,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:23,322 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:52:23,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23 WrapperNode [2021-11-12 22:52:23,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:23,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:23,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:52:23,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:52:23,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:23,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:52:23,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:52:23,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:52:23,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:52:23,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:52:23,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:52:23,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:52:23,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (1/1) ... [2021-11-12 22:52:23,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:23,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:23,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:52:23,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:52:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 22:52:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 22:52:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 22:52:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 22:52:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:52:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:52:23,847 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:52:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:52:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:52:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:52:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:52:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:52:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:52:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:52:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:52:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:52:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:52:23,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:52:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:52:23,850 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:52:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:52:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:52:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 22:52:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:52:23,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:52:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:52:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 22:52:23,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 22:52:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:52:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:52:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:52:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:52:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:52:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:52:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 22:52:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 22:52:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-12 22:52:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-12 22:52:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:52:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:52:39,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:52:39,680 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:52:39,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:39 BoogieIcfgContainer [2021-11-12 22:52:39,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:52:39,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:52:39,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:52:39,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:52:39,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:52:19" (1/3) ... [2021-11-12 22:52:39,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185110b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:39, skipping insertion in model container [2021-11-12 22:52:39,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:23" (2/3) ... [2021-11-12 22:52:39,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185110b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:39, skipping insertion in model container [2021-11-12 22:52:39,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:39" (3/3) ... [2021-11-12 22:52:39,699 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2021-11-12 22:52:39,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:52:39,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:52:39,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:52:39,762 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:52:39,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:52:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-12 22:52:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-12 22:52:39,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:39,809 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:39,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:39,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1007899796, now seen corresponding path program 1 times [2021-11-12 22:52:39,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:39,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596344831] [2021-11-12 22:52:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:39,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:39,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:39,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:39,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:52:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:44,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:52:44,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-12 22:52:45,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-12 22:52:45,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:45,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596344831] [2021-11-12 22:52:45,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596344831] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:45,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:52:45,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:52:45,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122806123] [2021-11-12 22:52:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:45,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:52:45,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:52:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:52:45,413 INFO L87 Difference]: Start difference. First operand has 163 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:52:45,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:45,501 INFO L93 Difference]: Finished difference Result 322 states and 455 transitions. [2021-11-12 22:52:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:52:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2021-11-12 22:52:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:45,522 INFO L225 Difference]: With dead ends: 322 [2021-11-12 22:52:45,522 INFO L226 Difference]: Without dead ends: 158 [2021-11-12 22:52:45,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:52:45,538 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:45,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 7.47ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:52:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-12 22:52:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-12 22:52:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 102 states have internal predecessors, (122), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-11-12 22:52:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 209 transitions. [2021-11-12 22:52:45,616 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 209 transitions. Word has length 106 [2021-11-12 22:52:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:45,616 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 209 transitions. [2021-11-12 22:52:45,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:52:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 209 transitions. [2021-11-12 22:52:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-12 22:52:45,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:45,621 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:45,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:45,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:45,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 335843256, now seen corresponding path program 1 times [2021-11-12 22:52:45,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:45,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431732955] [2021-11-12 22:52:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:45,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:45,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:45,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:45,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:52:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:50,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:52:50,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-12 22:52:50,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-12 22:52:51,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:51,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431732955] [2021-11-12 22:52:51,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431732955] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:51,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:52:51,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:52:51,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742613541] [2021-11-12 22:52:51,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:51,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:52:51,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:52:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:52:51,245 INFO L87 Difference]: Start difference. First operand 158 states and 209 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:52:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:51,572 INFO L93 Difference]: Finished difference Result 302 states and 403 transitions. [2021-11-12 22:52:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:52:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2021-11-12 22:52:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:51,579 INFO L225 Difference]: With dead ends: 302 [2021-11-12 22:52:51,579 INFO L226 Difference]: Without dead ends: 161 [2021-11-12 22:52:51,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:52:51,584 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 60 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 235.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.97ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:51,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 509 Invalid, 36 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 291.97ms Time] [2021-11-12 22:52:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-12 22:52:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-12 22:52:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 103 states have (on average 1.203883495145631) internal successors, (124), 105 states have internal predecessors, (124), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2021-11-12 22:52:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 214 transitions. [2021-11-12 22:52:51,628 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 214 transitions. Word has length 106 [2021-11-12 22:52:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:51,628 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 214 transitions. [2021-11-12 22:52:51,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:52:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 214 transitions. [2021-11-12 22:52:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 22:52:51,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:51,636 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:51,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:51,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:51,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 582398061, now seen corresponding path program 1 times [2021-11-12 22:52:51,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:51,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241455986] [2021-11-12 22:52:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:51,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:51,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:51,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:51,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:52:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:56,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:52:56,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:56,495 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 [2021-11-12 22:52:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-12 22:52:57,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:59,131 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 [2021-11-12 22:52:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-12 22:52:59,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:59,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241455986] [2021-11-12 22:52:59,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241455986] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:59,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:52:59,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 22:52:59,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231079304] [2021-11-12 22:52:59,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:59,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:52:59,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:59,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:52:59,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:52:59,503 INFO L87 Difference]: Start difference. First operand 161 states and 214 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-12 22:52:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:59,894 INFO L93 Difference]: Finished difference Result 325 states and 430 transitions. [2021-11-12 22:52:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:52:59,899 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 112 [2021-11-12 22:52:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:59,902 INFO L225 Difference]: With dead ends: 325 [2021-11-12 22:52:59,902 INFO L226 Difference]: Without dead ends: 174 [2021-11-12 22:52:59,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:52:59,904 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.75ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 271.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:59,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1698 Invalid, 170 Unknown, 0 Unchecked, 10.75ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 129 Unchecked, 271.79ms Time] [2021-11-12 22:52:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-12 22:52:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-12 22:52:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 115 states have (on average 1.208695652173913) internal successors, (139), 117 states have internal predecessors, (139), 44 states have call successors, (44), 13 states have call predecessors, (44), 14 states have return successors, (47), 43 states have call predecessors, (47), 43 states have call successors, (47) [2021-11-12 22:52:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2021-11-12 22:52:59,937 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 112 [2021-11-12 22:52:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:59,937 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2021-11-12 22:52:59,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-11-12 22:52:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2021-11-12 22:52:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 22:52:59,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:59,941 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:59,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:00,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:00,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:00,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash -560104405, now seen corresponding path program 1 times [2021-11-12 22:53:00,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:00,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156254699] [2021-11-12 22:53:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:00,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:00,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:00,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:00,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:53:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:04,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:53:04,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-12 22:53:04,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-12 22:53:04,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:04,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156254699] [2021-11-12 22:53:04,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156254699] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:04,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:04,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:53:04,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766500460] [2021-11-12 22:53:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:04,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:53:04,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:53:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:53:04,916 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:53:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:05,007 INFO L93 Difference]: Finished difference Result 328 states and 440 transitions. [2021-11-12 22:53:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:05,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2021-11-12 22:53:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:05,011 INFO L225 Difference]: With dead ends: 328 [2021-11-12 22:53:05,011 INFO L226 Difference]: Without dead ends: 180 [2021-11-12 22:53:05,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:05,014 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 20 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:05,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 619 Invalid, 16 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 52.79ms Time] [2021-11-12 22:53:05,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-12 22:53:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 168. [2021-11-12 22:53:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.209090909090909) internal successors, (133), 111 states have internal predecessors, (133), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2021-11-12 22:53:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2021-11-12 22:53:05,040 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 112 [2021-11-12 22:53:05,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:05,041 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2021-11-12 22:53:05,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:53:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2021-11-12 22:53:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:53:05,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:05,047 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:05,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:05,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:05,274 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:05,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1914198373, now seen corresponding path program 1 times [2021-11-12 22:53:05,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:05,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803764224] [2021-11-12 22:53:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:05,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:05,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:05,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:05,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:53:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:09,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:53:09,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-12 22:53:10,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-12 22:53:11,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:11,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803764224] [2021-11-12 22:53:11,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803764224] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:11,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:11,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 22:53:11,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875829068] [2021-11-12 22:53:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:11,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:11,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:11,077 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:53:13,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:53:15,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:53:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:16,625 INFO L93 Difference]: Finished difference Result 334 states and 452 transitions. [2021-11-12 22:53:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:16,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 116 [2021-11-12 22:53:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:16,632 INFO L225 Difference]: With dead ends: 334 [2021-11-12 22:53:16,632 INFO L226 Difference]: Without dead ends: 188 [2021-11-12 22:53:16,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:53:16,634 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 42 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5164.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 5370.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:16,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 736 Invalid, 133 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 2 Unknown, 43 Unchecked, 5370.47ms Time] [2021-11-12 22:53:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-12 22:53:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 177. [2021-11-12 22:53:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 119 states have (on average 1.218487394957983) internal successors, (145), 120 states have internal predecessors, (145), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2021-11-12 22:53:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2021-11-12 22:53:16,658 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 116 [2021-11-12 22:53:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:16,659 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2021-11-12 22:53:16,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:53:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2021-11-12 22:53:16,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:53:16,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:16,662 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:16,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:16,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:16,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:16,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash 856360295, now seen corresponding path program 1 times [2021-11-12 22:53:16,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:16,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016764614] [2021-11-12 22:53:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:16,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:16,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:16,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:16,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:53:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:53:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 22:53:22,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-12 22:53:24,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:24,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016764614] [2021-11-12 22:53:24,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016764614] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:24,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:24,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 22:53:24,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366115468] [2021-11-12 22:53:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:24,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:53:24,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:24,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:53:24,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:53:24,960 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:53:27,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:53:29,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:53:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:32,717 INFO L93 Difference]: Finished difference Result 342 states and 464 transitions. [2021-11-12 22:53:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:53:32,721 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 116 [2021-11-12 22:53:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:32,723 INFO L225 Difference]: With dead ends: 342 [2021-11-12 22:53:32,723 INFO L226 Difference]: Without dead ends: 186 [2021-11-12 22:53:32,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:53:32,725 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 38 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5787.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 293 IncrementalHoareTripleChecker+Unchecked, 6070.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:32,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1938 Invalid, 523 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [2 Valid, 226 Invalid, 2 Unknown, 293 Unchecked, 6070.87ms Time] [2021-11-12 22:53:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-12 22:53:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2021-11-12 22:53:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 125 states have internal predecessors, (147), 44 states have call successors, (44), 13 states have call predecessors, (44), 14 states have return successors, (50), 43 states have call predecessors, (50), 43 states have call successors, (50) [2021-11-12 22:53:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 241 transitions. [2021-11-12 22:53:32,741 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 241 transitions. Word has length 116 [2021-11-12 22:53:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:32,741 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 241 transitions. [2021-11-12 22:53:32,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:53:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 241 transitions. [2021-11-12 22:53:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:53:32,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:32,744 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:32,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:53:32,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:32,958 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -44376413, now seen corresponding path program 1 times [2021-11-12 22:53:32,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:32,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920936581] [2021-11-12 22:53:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:32,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:32,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:32,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:32,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:53:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:37,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:53:37,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-12 22:53:37,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-12 22:53:37,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:37,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920936581] [2021-11-12 22:53:37,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920936581] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:37,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:37,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:53:37,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300079423] [2021-11-12 22:53:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:37,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:53:37,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:53:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:53:37,649 INFO L87 Difference]: Start difference. First operand 182 states and 241 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:53:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:37,720 INFO L93 Difference]: Finished difference Result 346 states and 462 transitions. [2021-11-12 22:53:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 116 [2021-11-12 22:53:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:37,725 INFO L225 Difference]: With dead ends: 346 [2021-11-12 22:53:37,725 INFO L226 Difference]: Without dead ends: 186 [2021-11-12 22:53:37,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:37,727 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 34 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:37,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 610 Invalid, 13 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 39.06ms Time] [2021-11-12 22:53:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-12 22:53:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2021-11-12 22:53:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 119 states have (on average 1.1764705882352942) internal successors, (140), 121 states have internal predecessors, (140), 44 states have call successors, (44), 13 states have call predecessors, (44), 14 states have return successors, (50), 43 states have call predecessors, (50), 43 states have call successors, (50) [2021-11-12 22:53:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2021-11-12 22:53:37,743 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 116 [2021-11-12 22:53:37,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:37,743 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2021-11-12 22:53:37,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:53:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2021-11-12 22:53:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 22:53:37,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:37,746 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:37,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 22:53:37,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:37,962 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1923507359, now seen corresponding path program 1 times [2021-11-12 22:53:37,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:37,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823742430] [2021-11-12 22:53:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:37,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:37,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:37,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:53:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:41,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:53:41,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 22:53:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-12 22:53:42,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:42,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823742430] [2021-11-12 22:53:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823742430] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:42,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 22:53:42,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385371581] [2021-11-12 22:53:42,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:42,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:53:42,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:53:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:53:42,929 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:53:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:43,389 INFO L93 Difference]: Finished difference Result 345 states and 459 transitions. [2021-11-12 22:53:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:53:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 116 [2021-11-12 22:53:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:43,393 INFO L225 Difference]: With dead ends: 345 [2021-11-12 22:53:43,393 INFO L226 Difference]: Without dead ends: 187 [2021-11-12 22:53:43,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:53:43,395 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 12 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 360.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:43,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1535 Invalid, 132 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 360.23ms Time] [2021-11-12 22:53:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-12 22:53:43,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 178. [2021-11-12 22:53:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 119 states have (on average 1.1764705882352942) internal successors, (140), 121 states have internal predecessors, (140), 44 states have call successors, (44), 13 states have call predecessors, (44), 14 states have return successors, (50), 43 states have call predecessors, (50), 43 states have call successors, (50) [2021-11-12 22:53:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2021-11-12 22:53:43,411 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 116 [2021-11-12 22:53:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:43,411 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2021-11-12 22:53:43,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:53:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2021-11-12 22:53:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 22:53:43,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:43,414 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:43,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:43,629 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:43,629 INFO L85 PathProgramCache]: Analyzing trace with hash 295109660, now seen corresponding path program 1 times [2021-11-12 22:53:43,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:43,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097938489] [2021-11-12 22:53:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:43,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:43,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:43,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:53:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:47,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:53:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 22:53:48,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-12 22:53:48,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:48,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097938489] [2021-11-12 22:53:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097938489] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:48,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:48,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:53:48,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282733911] [2021-11-12 22:53:48,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:48,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:53:48,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:53:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:48,703 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:53:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:48,923 INFO L93 Difference]: Finished difference Result 319 states and 425 transitions. [2021-11-12 22:53:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:53:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2021-11-12 22:53:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:48,929 INFO L225 Difference]: With dead ends: 319 [2021-11-12 22:53:48,929 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 22:53:48,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:53:48,931 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 46 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 205.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:48,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 529 Invalid, 31 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 205.11ms Time] [2021-11-12 22:53:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 22:53:48,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-12 22:53:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 124 states have internal predecessors, (142), 44 states have call successors, (44), 13 states have call predecessors, (44), 15 states have return successors, (53), 43 states have call predecessors, (53), 43 states have call successors, (53) [2021-11-12 22:53:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 239 transitions. [2021-11-12 22:53:48,952 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 239 transitions. Word has length 118 [2021-11-12 22:53:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:48,952 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 239 transitions. [2021-11-12 22:53:48,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-12 22:53:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 239 transitions. [2021-11-12 22:53:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 22:53:48,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:48,955 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:49,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:49,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:49,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:49,183 INFO L85 PathProgramCache]: Analyzing trace with hash -353965097, now seen corresponding path program 1 times [2021-11-12 22:53:49,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:49,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140683691] [2021-11-12 22:53:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:49,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:49,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:49,189 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:49,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:53:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:53,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:53:53,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 22:53:53,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-12 22:53:54,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:54,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140683691] [2021-11-12 22:53:54,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140683691] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:53:54,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:53:54,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-12 22:53:54,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319177337] [2021-11-12 22:53:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:54,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:53:54,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:53:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:53:54,472 INFO L87 Difference]: Start difference. First operand 181 states and 239 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-12 22:53:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:54,878 INFO L93 Difference]: Finished difference Result 319 states and 421 transitions. [2021-11-12 22:53:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:54,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 120 [2021-11-12 22:53:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:54,881 INFO L225 Difference]: With dead ends: 319 [2021-11-12 22:53:54,881 INFO L226 Difference]: Without dead ends: 178 [2021-11-12 22:53:54,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:53:54,882 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 82 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 364.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:54,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 666 Invalid, 91 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [52 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 364.78ms Time] [2021-11-12 22:53:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-12 22:53:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-12 22:53:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 121 states have internal predecessors, (139), 44 states have call successors, (44), 13 states have call predecessors, (44), 14 states have return successors, (50), 43 states have call predecessors, (50), 43 states have call successors, (50) [2021-11-12 22:53:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 233 transitions. [2021-11-12 22:53:54,896 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 233 transitions. Word has length 120 [2021-11-12 22:53:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:54,897 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 233 transitions. [2021-11-12 22:53:54,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-12 22:53:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 233 transitions. [2021-11-12 22:53:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-12 22:53:54,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:54,899 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:53:54,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:55,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:55,114 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1173866633, now seen corresponding path program 1 times [2021-11-12 22:53:55,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:55,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567573990] [2021-11-12 22:53:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:55,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:55,119 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:55,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:53:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:59,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:53:59,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 22:54:00,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-12 22:54:00,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:54:00,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567573990] [2021-11-12 22:54:00,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567573990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:54:00,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:54:00,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-12 22:54:00,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000328089] [2021-11-12 22:54:00,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:54:00,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:54:00,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:54:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:54:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:54:00,555 INFO L87 Difference]: Start difference. First operand 178 states and 233 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-12 22:54:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:54:01,118 INFO L93 Difference]: Finished difference Result 310 states and 404 transitions. [2021-11-12 22:54:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:54:01,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 132 [2021-11-12 22:54:01,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:54:01,124 INFO L225 Difference]: With dead ends: 310 [2021-11-12 22:54:01,124 INFO L226 Difference]: Without dead ends: 175 [2021-11-12 22:54:01,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:54:01,125 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 73 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 451.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 510.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:54:01,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 855 Invalid, 99 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [50 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 510.47ms Time] [2021-11-12 22:54:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-12 22:54:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-12 22:54:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 117 states have (on average 1.1623931623931625) internal successors, (136), 118 states have internal predecessors, (136), 44 states have call successors, (44), 13 states have call predecessors, (44), 13 states have return successors, (47), 43 states have call predecessors, (47), 43 states have call successors, (47) [2021-11-12 22:54:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-12 22:54:01,141 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 132 [2021-11-12 22:54:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:54:01,143 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-12 22:54:01,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-12 22:54:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-12 22:54:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-12 22:54:01,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:01,146 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:54:01,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:01,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:54:01,370 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash -548079182, now seen corresponding path program 1 times [2021-11-12 22:54:01,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:54:01,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156334022] [2021-11-12 22:54:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:54:01,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:54:01,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:54:01,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:54:01,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd17d808-121e-40ab-a8b4-9f7e663b7ab1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:54:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:54:06,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 22:54:06,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:08,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:54:08,750 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 [2021-11-12 22:54:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-12 22:54:08,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:10,536 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-12 22:54:10,536 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 132 treesize of output 1 [2021-11-12 22:54:22,538 WARN L227 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:54:22,542 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 22:54:22,543 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