./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_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_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/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_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/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_adf28116-5be2-4377-96cc-1c217c347d29/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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:25:19,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:25:19,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:25:19,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:25:19,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:25:19,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:25:19,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:25:19,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:25:19,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:25:19,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:25:19,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:25:19,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:25:19,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:25:19,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:25:19,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:25:19,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:25:19,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:25:19,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:25:19,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:25:19,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:25:19,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:25:19,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:25:19,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:25:19,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:25:19,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:25:19,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:25:19,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:25:19,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:25:19,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:25:19,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:25:19,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:25:19,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:25:19,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:25:19,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:25:19,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:25:19,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:25:19,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:25:19,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:25:19,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:25:19,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:25:19,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:25:19,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:25:19,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:25:19,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:25:19,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:25:19,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:25:19,518 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:25:19,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:25:19,518 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:25:19,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:25:19,519 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:25:19,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:25:19,526 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:25:19,526 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:25:19,527 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:25:19,527 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:25:19,527 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:25:19,527 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:25:19,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:25:19,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:25:19,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:25:19,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:25:19,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:25:19,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:25:19,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:25:19,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:25:19,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:25:19,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:25:19,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:25:19,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:25:19,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:19,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:25:19,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:25:19,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:25:19,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:25:19,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:25:19,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:25:19,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:25:19,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:25:19,535 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_adf28116-5be2-4377-96cc-1c217c347d29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-11-12 23:25:19,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:25:19,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:25:19,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:25:19,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:25:19,820 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:25:19,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-12 23:25:19,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/45ddde039/7fcd32ac7c614ca581c45005ba2aa064/FLAG4a644461a [2021-11-12 23:25:20,757 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:25:20,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-12 23:25:20,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/45ddde039/7fcd32ac7c614ca581c45005ba2aa064/FLAG4a644461a [2021-11-12 23:25:21,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/45ddde039/7fcd32ac7c614ca581c45005ba2aa064 [2021-11-12 23:25:21,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:25:21,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:25:21,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:21,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:25:21,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:25:21,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:21" (1/1) ... [2021-11-12 23:25:21,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4f169e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:21, skipping insertion in model container [2021-11-12 23:25:21,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:21" (1/1) ... [2021-11-12 23:25:21,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:25:21,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:25:21,685 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-12 23:25:21,694 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-12 23:25:21,720 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:25:21,729 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:25:22,614 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:25:22,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:22,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:23,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:25:23,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:25:23,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:25:23,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:25:23,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:25:23,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:25:23,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:25:23,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:25:23,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:25:23,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:25:23,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:23,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:23,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:23,336 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:25:23,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fb30afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:23, skipping insertion in model container [2021-11-12 23:25:23,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:23,339 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:25:23,342 INFO L158 Benchmark]: Toolchain (without parser) took 2069.25ms. Allocated memory is still 111.1MB. Free memory was 71.1MB in the beginning and 48.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-12 23:25:23,343 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:25:23,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2061.54ms. Allocated memory is still 111.1MB. Free memory was 70.8MB in the beginning and 48.9MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-12 23:25:23,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2061.54ms. Allocated memory is still 111.1MB. Free memory was 70.8MB in the beginning and 48.9MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/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_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/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_adf28116-5be2-4377-96cc-1c217c347d29/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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:25:25,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:25:25,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:25:25,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:25:25,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:25:25,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:25:25,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:25:25,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:25:25,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:25:25,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:25:25,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:25:25,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:25:25,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:25:25,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:25:25,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:25:25,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:25:25,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:25:25,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:25:25,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:25:25,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:25:25,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:25:25,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:25:25,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:25:25,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:25:25,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:25:25,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:25:25,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:25:25,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:25:25,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:25:25,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:25:25,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:25:25,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:25:25,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:25:25,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:25:25,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:25:25,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:25:25,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:25:25,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:25:25,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:25:25,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:25:25,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:25:25,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:25:25,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:25:25,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:25:25,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:25:25,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:25:25,892 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:25:25,892 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:25:25,892 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:25:25,892 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:25:25,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:25:25,893 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:25:25,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:25:25,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:25:25,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:25:25,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:25:25,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:25:25,895 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:25:25,895 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:25:25,895 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:25:25,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:25:25,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:25:25,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:25:25,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:25:25,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:25:25,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:25:25,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:25,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:25:25,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:25:25,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:25:25,898 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:25:25,898 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:25,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:25:25,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:25:25,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:25:25,899 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_adf28116-5be2-4377-96cc-1c217c347d29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-11-12 23:25:26,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:25:26,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:25:26,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:25:26,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:25:26,307 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:25:26,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-12 23:25:26,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/d7dc4fd44/72f15ea5808c41e2a46bf3229165c511/FLAG2f3a9361f [2021-11-12 23:25:27,334 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:25:27,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-12 23:25:27,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/d7dc4fd44/72f15ea5808c41e2a46bf3229165c511/FLAG2f3a9361f [2021-11-12 23:25:27,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/data/d7dc4fd44/72f15ea5808c41e2a46bf3229165c511 [2021-11-12 23:25:27,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:25:27,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:25:27,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:27,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:25:27,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:25:27,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:27" (1/1) ... [2021-11-12 23:25:27,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4620cfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:27, skipping insertion in model container [2021-11-12 23:25:27,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:25:27" (1/1) ... [2021-11-12 23:25:27,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:25:28,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:25:28,427 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-12 23:25:28,437 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-12 23:25:28,461 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:25:28,468 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:25:29,612 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:25:29,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,694 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,714 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:29,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,142 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:25:30,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:25:30,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:25:30,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:25:30,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:25:30,148 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:25:30,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:25:30,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:25:30,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:25:30,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:25:30,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:30,404 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:25:30,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:25:30,448 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-12 23:25:30,448 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-12 23:25:30,450 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:25:30,451 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:25:30,480 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:25:30,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,505 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,506 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,507 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,546 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:25:30,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:25:30,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:25:30,554 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:25:30,555 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:25:30,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:25:30,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:25:30,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:25:30,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:25:30,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:25:30,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:30,727 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:25:30,755 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-12 23:25:30,756 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_adf28116-5be2-4377-96cc-1c217c347d29/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-12 23:25:30,758 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:25:30,760 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:25:30,810 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:25:30,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,931 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:25:30,932 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:25:30,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:25:30,933 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:25:30,935 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:25:30,935 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:25:30,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:25:30,936 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:25:30,937 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:25:30,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:25:30,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:30,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:25:31,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:25:31,302 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:25:31,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31 WrapperNode [2021-11-12 23:25:31,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:25:31,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:25:31,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:25:31,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:25:31,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:25:31,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:25:31,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:25:31,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:25:31,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:25:31,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:25:31,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:25:31,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:25:31,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (1/1) ... [2021-11-12 23:25:31,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:31,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:31,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:25:31,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:25:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-12 23:25:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-12 23:25:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:25:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-12 23:25:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-12 23:25:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:25:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:25:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:25:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:25:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:25:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-12 23:25:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-12 23:25:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:25:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:25:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:25:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:25:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:25:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:25:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:25:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:25:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:25:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:25:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:25:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:25:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 23:25:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 23:25:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-12 23:25:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-12 23:25:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-12 23:25:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-12 23:25:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:25:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:25:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:25:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 23:25:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:25:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:25:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:25:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:25:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:25:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:25:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 23:25:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 23:25:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-12 23:25:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-12 23:25:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-12 23:25:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-12 23:25:46,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:25:46,954 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-12 23:25:46,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:25:46 BoogieIcfgContainer [2021-11-12 23:25:46,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:25:46,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:25:46,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:25:46,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:25:46,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:25:27" (1/3) ... [2021-11-12 23:25:46,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf8b871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:25:46, skipping insertion in model container [2021-11-12 23:25:46,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:25:31" (2/3) ... [2021-11-12 23:25:46,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf8b871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:25:46, skipping insertion in model container [2021-11-12 23:25:46,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:25:46" (3/3) ... [2021-11-12 23:25:46,965 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-11-12 23:25:46,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:25:46,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:25:47,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:25:47,035 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:25:47,035 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:25:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 127 states have internal predecessors, (161), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-12 23:25:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 23:25:47,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:47,071 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-12 23:25:47,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -124133439, now seen corresponding path program 1 times [2021-11-12 23:25:47,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:47,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371604658] [2021-11-12 23:25:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:47,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:47,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:47,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:47,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:25:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:51,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:25:51,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-12 23:25:52,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-12 23:25:52,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:52,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371604658] [2021-11-12 23:25:52,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371604658] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:52,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:25:52,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:25:52,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484903565] [2021-11-12 23:25:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:52,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:25:52,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:25:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:25:52,424 INFO L87 Difference]: Start difference. First operand has 195 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 127 states have internal predecessors, (161), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:25:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:52,507 INFO L93 Difference]: Finished difference Result 385 states and 567 transitions. [2021-11-12 23:25:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:25:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2021-11-12 23:25:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:52,531 INFO L225 Difference]: With dead ends: 385 [2021-11-12 23:25:52,531 INFO L226 Difference]: Without dead ends: 188 [2021-11-12 23:25:52,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:25:52,550 INFO L933 BasicCegarLoop]: 259 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, 259 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:52,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 6.74ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:25:52,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-12 23:25:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-12 23:25:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 121 states have internal predecessors, (147), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-12 23:25:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 251 transitions. [2021-11-12 23:25:52,646 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 251 transitions. Word has length 97 [2021-11-12 23:25:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:52,647 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 251 transitions. [2021-11-12 23:25:52,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:25:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 251 transitions. [2021-11-12 23:25:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-12 23:25:52,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:52,654 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:52,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:52,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:52,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -214672736, now seen corresponding path program 1 times [2021-11-12 23:25:52,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:52,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640315504] [2021-11-12 23:25:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:52,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:52,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:52,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:52,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:25:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:57,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:25:57,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 23:25:57,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-12 23:25:58,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:58,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640315504] [2021-11-12 23:25:58,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640315504] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:58,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:25:58,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:25:58,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859871921] [2021-11-12 23:25:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:58,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:25:58,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:58,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:25:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:25:58,574 INFO L87 Difference]: Start difference. First operand 188 states and 251 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:25:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:58,854 INFO L93 Difference]: Finished difference Result 366 states and 483 transitions. [2021-11-12 23:25:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:25:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 131 [2021-11-12 23:25:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:58,860 INFO L225 Difference]: With dead ends: 366 [2021-11-12 23:25:58,860 INFO L226 Difference]: Without dead ends: 188 [2021-11-12 23:25:58,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:25:58,866 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 13 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:58,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1203 Invalid, 39 Unknown, 0 Unchecked, 13.49ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 167.15ms Time] [2021-11-12 23:25:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-12 23:25:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-12 23:25:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.226890756302521) internal successors, (146), 121 states have internal predecessors, (146), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-12 23:25:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2021-11-12 23:25:58,890 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 131 [2021-11-12 23:25:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:58,891 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2021-11-12 23:25:58,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:25:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2021-11-12 23:25:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-12 23:25:58,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:58,895 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:58,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:59,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:59,110 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash 636645442, now seen corresponding path program 1 times [2021-11-12 23:25:59,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:59,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560405099] [2021-11-12 23:25:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:59,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:59,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:59,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:59,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:26:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:03,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:26:03,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 23:26:04,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-12 23:26:04,932 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:04,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560405099] [2021-11-12 23:26:04,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560405099] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:26:04,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:26:04,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-12 23:26:04,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383897570] [2021-11-12 23:26:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:04,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:26:04,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:26:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:26:04,935 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:26:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:05,227 INFO L93 Difference]: Finished difference Result 368 states and 484 transitions. [2021-11-12 23:26:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:26:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2021-11-12 23:26:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:05,231 INFO L225 Difference]: With dead ends: 368 [2021-11-12 23:26:05,231 INFO L226 Difference]: Without dead ends: 190 [2021-11-12 23:26:05,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:26:05,233 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 14 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.54ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:05,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1439 Invalid, 50 Unknown, 0 Unchecked, 10.12ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 193.54ms Time] [2021-11-12 23:26:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-12 23:26:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2021-11-12 23:26:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.225) internal successors, (147), 122 states have internal predecessors, (147), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-12 23:26:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 251 transitions. [2021-11-12 23:26:05,254 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 251 transitions. Word has length 133 [2021-11-12 23:26:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:05,254 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 251 transitions. [2021-11-12 23:26:05,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 23:26:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 251 transitions. [2021-11-12 23:26:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-12 23:26:05,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:05,258 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:05,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:05,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:05,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1171439042, now seen corresponding path program 1 times [2021-11-12 23:26:05,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:05,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382892269] [2021-11-12 23:26:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:05,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:05,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:05,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:26:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:26:09,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-12 23:26:10,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 23:26:11,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:11,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382892269] [2021-11-12 23:26:11,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382892269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:11,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567349077] [2021-11-12 23:26:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:11,632 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:11,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:11,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:11,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 23:26:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:15,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:26:15,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-12 23:26:16,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 23:26:17,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567349077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:17,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640345182] [2021-11-12 23:26:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:17,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:26:17,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:17,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:26:17,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 23:26:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:18,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:26:18,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-12 23:26:19,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 23:26:19,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640345182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:19,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:26:19,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2021-11-12 23:26:19,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630158011] [2021-11-12 23:26:19,787 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:26:19,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:26:19,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:26:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:26:19,791 INFO L87 Difference]: Start difference. First operand 189 states and 251 transitions. Second operand has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 13 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-12 23:26:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:20,417 INFO L93 Difference]: Finished difference Result 371 states and 487 transitions. [2021-11-12 23:26:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:26:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 13 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 137 [2021-11-12 23:26:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:20,422 INFO L225 Difference]: With dead ends: 371 [2021-11-12 23:26:20,422 INFO L226 Difference]: Without dead ends: 192 [2021-11-12 23:26:20,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:26:20,425 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 25 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 387.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.21ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 435.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:20,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1685 Invalid, 88 Unknown, 0 Unchecked, 10.21ms Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 435.65ms Time] [2021-11-12 23:26:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-12 23:26:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2021-11-12 23:26:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.221311475409836) internal successors, (149), 124 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-12 23:26:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 253 transitions. [2021-11-12 23:26:20,448 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 253 transitions. Word has length 137 [2021-11-12 23:26:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:20,450 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 253 transitions. [2021-11-12 23:26:20,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 13 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-12 23:26:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 253 transitions. [2021-11-12 23:26:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-12 23:26:20,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:20,455 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:20,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:20,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:20,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:26:21,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:21,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash 104614978, now seen corresponding path program 2 times [2021-11-12 23:26:21,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:21,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174862245] [2021-11-12 23:26:21,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:26:21,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:21,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:21,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:21,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:26:24,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 23:26:24,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:26:24,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:26:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-12 23:26:25,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-12 23:26:25,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:25,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174862245] [2021-11-12 23:26:25,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174862245] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:26:25,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:26:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:26:25,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980550632] [2021-11-12 23:26:25,655 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:25,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:26:25,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:26:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:26:25,657 INFO L87 Difference]: Start difference. First operand 191 states and 253 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-12 23:26:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:25,915 INFO L93 Difference]: Finished difference Result 199 states and 261 transitions. [2021-11-12 23:26:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:26:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2021-11-12 23:26:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:25,920 INFO L225 Difference]: With dead ends: 199 [2021-11-12 23:26:25,921 INFO L226 Difference]: Without dead ends: 197 [2021-11-12 23:26:25,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:26:25,928 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 11 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 212.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:25,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 974 Invalid, 29 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 212.00ms Time] [2021-11-12 23:26:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-12 23:26:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-11-12 23:26:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-12 23:26:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-11-12 23:26:25,957 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 141 [2021-11-12 23:26:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:25,966 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-11-12 23:26:25,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-12 23:26:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-11-12 23:26:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-12 23:26:25,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:25,980 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:26,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:26,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:26,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 106462020, now seen corresponding path program 1 times [2021-11-12 23:26:26,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:26,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748955685] [2021-11-12 23:26:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:26,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:26,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:26,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:26:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:30,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:26:30,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-12 23:26:31,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-12 23:26:32,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:32,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748955685] [2021-11-12 23:26:32,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748955685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:32,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1265383060] [2021-11-12 23:26:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:32,666 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:32,667 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:32,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:26:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:36,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:26:36,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-12 23:26:37,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-12 23:26:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1265383060] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:38,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507651202] [2021-11-12 23:26:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:38,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:26:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:38,160 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:26:38,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:26:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:39,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:26:39,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-12 23:26:40,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-12 23:26:41,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507651202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:41,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:26:41,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 25 [2021-11-12 23:26:41,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134972361] [2021-11-12 23:26:41,828 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:26:41,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-12 23:26:41,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-12 23:26:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:26:41,830 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 25 states, 22 states have (on average 4.5) internal successors, (99), 25 states have internal predecessors, (99), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-12 23:26:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:42,970 INFO L93 Difference]: Finished difference Result 385 states and 501 transitions. [2021-11-12 23:26:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:26:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.5) internal successors, (99), 25 states have internal predecessors, (99), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 141 [2021-11-12 23:26:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:42,976 INFO L225 Difference]: With dead ends: 385 [2021-11-12 23:26:42,976 INFO L226 Difference]: Without dead ends: 199 [2021-11-12 23:26:42,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2021-11-12 23:26:42,979 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 55 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 571.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.89ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 622.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:42,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 2403 Invalid, 133 Unknown, 0 Unchecked, 8.89ms Time], IncrementalHoareTripleChecker [25 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 622.82ms Time] [2021-11-12 23:26:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-12 23:26:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-11-12 23:26:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-12 23:26:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-11-12 23:26:42,998 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 141 [2021-11-12 23:26:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:42,999 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-11-12 23:26:43,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.5) internal successors, (99), 25 states have internal predecessors, (99), 8 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-12 23:26:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-11-12 23:26:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-12 23:26:43,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:43,003 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:43,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-12 23:26:43,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:43,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-12 23:26:43,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:43,622 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 600214212, now seen corresponding path program 2 times [2021-11-12 23:26:43,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:43,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841979498] [2021-11-12 23:26:43,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:26:43,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:43,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:43,627 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:43,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf28116-5be2-4377-96cc-1c217c347d29/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process