./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:15:43,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:43,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:43,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:43,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:43,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:43,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:43,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:43,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:43,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:43,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:43,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:43,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:43,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:43,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:43,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:43,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:43,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:43,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:43,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:43,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:43,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:43,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:43,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:43,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:43,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:43,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:43,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:43,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:43,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:43,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:43,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:43,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:43,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:43,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:43,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:43,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:43,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:43,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:43,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:43,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:43,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:15:43,628 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:43,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:43,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:43,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:43,630 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:43,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:43,637 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:43,638 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:15:43,638 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:43,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:43,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:15:43,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:15:43,639 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:43,639 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:15:43,639 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:15:43,639 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:15:43,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:43,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:15:43,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:43,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:43,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:43,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:43,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:43,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:43,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:43,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:43,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:43,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:43,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:43,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:43,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:43,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:43,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:15:43,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:15:43,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:43,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:43,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:43,644 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_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 [2021-11-19 14:15:43,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:43,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:43,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:43,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:43,982 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:43,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-19 14:15:44,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/1f0fb1c69/d2b74f3595c34238856360d2165a0dc6/FLAG5e3feb043 [2021-11-19 14:15:44,843 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:44,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-19 14:15:44,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/1f0fb1c69/d2b74f3595c34238856360d2165a0dc6/FLAG5e3feb043 [2021-11-19 14:15:45,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/1f0fb1c69/d2b74f3595c34238856360d2165a0dc6 [2021-11-19 14:15:45,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:45,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:45,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:45,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:45,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:45,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:45" (1/1) ... [2021-11-19 14:15:45,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19dbcf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:45, skipping insertion in model container [2021-11-19 14:15:45,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:45" (1/1) ... [2021-11-19 14:15:45,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:45,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:45,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-19 14:15:45,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-19 14:15:45,884 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:15:45,891 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:15:46,866 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,867 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,868 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,868 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,870 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,905 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,906 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,908 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,908 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,910 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,911 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,912 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:46,913 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:47,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:15:47,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:15:47,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:15:47,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:15:47,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:15:47,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:15:47,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:15:47,382 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:15:47,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:15:47,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:15:47,577 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:15:47,745 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:47,797 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:15:47,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71f2b41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:47, skipping insertion in model container [2021-11-19 14:15:47,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:47,798 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:15:47,801 INFO L158 Benchmark]: Toolchain (without parser) took 2399.17ms. Allocated memory was 109.1MB in the beginning and 140.5MB in the end (delta: 31.5MB). Free memory was 63.2MB in the beginning and 102.8MB in the end (delta: -39.6MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-19 14:15:47,802 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:15:47,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2391.97ms. Allocated memory was 109.1MB in the beginning and 140.5MB in the end (delta: 31.5MB). Free memory was 63.0MB in the beginning and 102.8MB in the end (delta: -39.8MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-19 14:15:47,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2391.97ms. Allocated memory was 109.1MB in the beginning and 140.5MB in the end (delta: 31.5MB). Free memory was 63.0MB in the beginning and 102.8MB in the end (delta: -39.8MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:15:50,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:50,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:50,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:50,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:50,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:50,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:50,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:50,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:50,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:50,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:50,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:50,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:50,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:50,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:50,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:50,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:50,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:50,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:50,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:50,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:50,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:50,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:50,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:50,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:50,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:50,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:50,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:50,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:50,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:50,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:50,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:50,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:50,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:50,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:50,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:50,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:50,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:50,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:50,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:50,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:50,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:15:50,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:50,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:50,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:50,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:50,487 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:50,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:50,488 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:50,488 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:50,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:50,488 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:50,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:50,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:50,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:50,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:50,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:50,492 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:50,492 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:15:50,493 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:15:50,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:50,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:50,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:50,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:50,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:15:50,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:50,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:50,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:50,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:50,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:50,496 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:15:50,496 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:50,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:50,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:50,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:50,497 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_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 [2021-11-19 14:15:50,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:50,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:50,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:50,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:50,963 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:50,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-19 14:15:51,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/3601168db/a17a4f110e4b403ba5bfe87bc08cf712/FLAGbe49d28b4 [2021-11-19 14:15:51,983 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:51,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-19 14:15:52,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/3601168db/a17a4f110e4b403ba5bfe87bc08cf712/FLAGbe49d28b4 [2021-11-19 14:15:52,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/data/3601168db/a17a4f110e4b403ba5bfe87bc08cf712 [2021-11-19 14:15:52,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:52,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:52,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:52,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:52,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:52,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:52" (1/1) ... [2021-11-19 14:15:52,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f44bada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:52, skipping insertion in model container [2021-11-19 14:15:52,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:52" (1/1) ... [2021-11-19 14:15:52,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:52,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:52,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-19 14:15:52,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-19 14:15:52,951 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:15:52,968 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:15:53,977 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:53,978 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:53,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:53,980 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:53,981 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,000 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,001 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,003 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,008 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,009 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,010 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:54,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:15:54,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:15:54,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:15:54,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:15:54,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:15:54,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:15:54,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:15:54,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:15:54,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:15:54,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:15:54,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:15:54,931 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:54,975 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:15:55,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:55,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-19 14:15:55,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-19 14:15:55,027 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:15:55,027 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:15:55,073 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,074 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,076 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,086 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,090 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,094 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,096 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,098 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,099 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,105 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:15:55,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:15:55,212 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:15:55,213 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:15:55,214 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:15:55,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:15:55,216 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:15:55,216 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:15:55,217 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:15:55,217 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:15:55,245 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:15:55,288 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:55,340 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:15:55,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4494,4507] [2021-11-19 14:15:55,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i[4554,4567] [2021-11-19 14:15:55,374 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:15:55,377 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:15:55,446 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,447 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,447 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,451 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,452 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,463 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,465 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,466 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,467 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,468 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,469 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,470 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,470 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:15:55,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:15:55,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:15:55,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:15:55,519 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:15:55,520 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:15:55,520 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:15:55,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:15:55,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:15:55,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:15:55,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:15:55,559 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:15:55,621 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:56,035 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:15:56,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56 WrapperNode [2021-11-19 14:15:56,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:56,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:56,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:15:56,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:15:56,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,316 INFO L137 Inliner]: procedures = 711, calls = 1513, calls flagged for inlining = 49, calls inlined = 7, statements flattened = 563 [2021-11-19 14:15:56,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:56,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:15:56,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:15:56,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:15:56,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:15:56,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:15:56,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:15:56,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:15:56,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (1/1) ... [2021-11-19 14:15:56,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:15:56,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:15:56,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:15:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2021-11-19 14:15:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:15:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:15:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:15:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:15:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:15:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 14:15:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 14:15:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2021-11-19 14:15:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2021-11-19 14:15:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_init_ptr [2021-11-19 14:15:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_init_ptr [2021-11-19 14:15:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:15:56,548 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:15:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:15:56,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:15:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:15:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:15:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:15:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2021-11-19 14:15:56,549 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2021-11-19 14:15:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:15:56,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:15:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:15:56,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:15:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 14:15:56,551 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 14:15:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:15:56,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:15:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:15:56,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:15:56,553 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-19 14:15:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-19 14:15:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:15:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:15:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:15:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2021-11-19 14:15:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2021-11-19 14:15:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:15:56,559 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:15:56,559 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2021-11-19 14:15:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2021-11-19 14:15:56,983 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:15:57,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:15:58,560 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:15:58,569 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:15:58,569 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 14:15:58,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:58 BoogieIcfgContainer [2021-11-19 14:15:58,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:15:58,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:15:58,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:15:58,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:15:58,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:15:52" (1/3) ... [2021-11-19 14:15:58,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c81edad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:58, skipping insertion in model container [2021-11-19 14:15:58,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:56" (2/3) ... [2021-11-19 14:15:58,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c81edad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:58, skipping insertion in model container [2021-11-19 14:15:58,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:58" (3/3) ... [2021-11-19 14:15:58,582 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_init_harness.i [2021-11-19 14:15:58,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:15:58,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 14:15:58,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:15:58,657 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:15:58,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 14:15:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 93 states have internal predecessors, (112), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-19 14:15:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:15:58,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:58,694 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:15:58,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2019519192, now seen corresponding path program 1 times [2021-11-19 14:15:58,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:15:58,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563084937] [2021-11-19 14:15:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:58,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:15:58,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:15:58,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:15:58,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:15:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:59,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:15:59,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:15:59,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 14:16:00,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:00,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563084937] [2021-11-19 14:16:00,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563084937] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:00,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:16:00,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:16:00,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426972290] [2021-11-19 14:16:00,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:00,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:16:00,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:16:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:16:00,087 INFO L87 Difference]: Start difference. First operand has 137 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 93 states have internal predecessors, (112), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:16:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:00,167 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2021-11-19 14:16:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:16:00,171 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2021-11-19 14:16:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:00,202 INFO L225 Difference]: With dead ends: 268 [2021-11-19 14:16:00,203 INFO L226 Difference]: Without dead ends: 130 [2021-11-19 14:16:00,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:16:00,212 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:00,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-19 14:16:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-19 14:16:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 86 states have internal predecessors, (100), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2021-11-19 14:16:00,302 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 83 [2021-11-19 14:16:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:00,304 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2021-11-19 14:16:00,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:16:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2021-11-19 14:16:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:16:00,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:00,321 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:00,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:00,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:00,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash -384546217, now seen corresponding path program 1 times [2021-11-19 14:16:00,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:00,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896534728] [2021-11-19 14:16:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:00,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:00,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:00,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:16:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:01,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:16:01,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 14:16:01,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-19 14:16:01,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:01,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896534728] [2021-11-19 14:16:01,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896534728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:01,805 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:16:01,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:16:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041796962] [2021-11-19 14:16:01,806 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:01,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:16:01,811 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:16:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:01,931 INFO L93 Difference]: Finished difference Result 252 states and 302 transitions. [2021-11-19 14:16:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 89 [2021-11-19 14:16:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:01,939 INFO L225 Difference]: With dead ends: 252 [2021-11-19 14:16:01,940 INFO L226 Difference]: Without dead ends: 132 [2021-11-19 14:16:01,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:16:01,946 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 6 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:01,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 464 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-19 14:16:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-19 14:16:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2021-11-19 14:16:01,982 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 89 [2021-11-19 14:16:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:01,982 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2021-11-19 14:16:01,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:16:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2021-11-19 14:16:01,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:16:01,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:01,989 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:02,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:02,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:02,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1786153207, now seen corresponding path program 1 times [2021-11-19 14:16:02,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:02,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339777299] [2021-11-19 14:16:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:02,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:02,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:02,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:16:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:02,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 14:16:03,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-19 14:16:03,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:03,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339777299] [2021-11-19 14:16:03,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339777299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:03,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [72944005] [2021-11-19 14:16:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:03,723 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:03,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:03,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 14:16:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:04,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:16:04,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 14:16:04,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 14:16:04,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [72944005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:04,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:04,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 14 [2021-11-19 14:16:04,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682146508] [2021-11-19 14:16:04,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:04,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:04,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:16:04,932 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 14:16:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:05,009 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2021-11-19 14:16:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:16:05,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2021-11-19 14:16:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:05,013 INFO L225 Difference]: With dead ends: 188 [2021-11-19 14:16:05,013 INFO L226 Difference]: Without dead ends: 132 [2021-11-19 14:16:05,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:16:05,016 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 2 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:05,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 617 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-19 14:16:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-19 14:16:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 88 states have internal predecessors, (101), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2021-11-19 14:16:05,030 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 91 [2021-11-19 14:16:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:05,031 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2021-11-19 14:16:05,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-19 14:16:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2021-11-19 14:16:05,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 14:16:05,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:05,034 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:05,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:05,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:16:05,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:05,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1971788622, now seen corresponding path program 1 times [2021-11-19 14:16:05,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:05,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419545810] [2021-11-19 14:16:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:05,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:05,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:05,456 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:05,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:16:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:06,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:06,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:16:06,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-19 14:16:06,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:06,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419545810] [2021-11-19 14:16:06,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419545810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:06,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [961515109] [2021-11-19 14:16:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:06,953 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:06,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:06,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:06,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 14:16:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:07,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:07,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:16:08,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:16:08,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [961515109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:08,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:08,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6] total 14 [2021-11-19 14:16:08,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838861006] [2021-11-19 14:16:08,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:08,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:08,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:16:08,358 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-19 14:16:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:08,447 INFO L93 Difference]: Finished difference Result 186 states and 231 transitions. [2021-11-19 14:16:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2021-11-19 14:16:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:08,455 INFO L225 Difference]: With dead ends: 186 [2021-11-19 14:16:08,455 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:16:08,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:16:08,458 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 23 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:08,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 700 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:16:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:16:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 84 states have internal predecessors, (96), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2021-11-19 14:16:08,472 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 99 [2021-11-19 14:16:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:08,473 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2021-11-19 14:16:08,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-19 14:16:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2021-11-19 14:16:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 14:16:08,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:08,476 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:08,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:08,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:08,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:08,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash 966208249, now seen corresponding path program 1 times [2021-11-19 14:16:08,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:08,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397048515] [2021-11-19 14:16:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:08,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:08,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:08,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:08,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:16:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:09,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:09,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 14:16:09,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:16:10,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:10,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397048515] [2021-11-19 14:16:10,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397048515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:10,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [523722215] [2021-11-19 14:16:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:10,495 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:10,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:10,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 14:16:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:11,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:16:11,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 14:16:11,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 14:16:11,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [523722215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:11,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:11,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 12 [2021-11-19 14:16:11,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436759397] [2021-11-19 14:16:11,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:11,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:16:11,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:16:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:16:11,807 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-19 14:16:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:11,857 INFO L93 Difference]: Finished difference Result 186 states and 227 transitions. [2021-11-19 14:16:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:16:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 138 [2021-11-19 14:16:11,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:11,861 INFO L225 Difference]: With dead ends: 186 [2021-11-19 14:16:11,861 INFO L226 Difference]: Without dead ends: 132 [2021-11-19 14:16:11,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:16:11,863 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 3 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:11,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 440 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-19 14:16:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-11-19 14:16:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 86 states have internal predecessors, (98), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2021-11-19 14:16:11,877 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 138 [2021-11-19 14:16:11,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:11,878 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2021-11-19 14:16:11,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-19 14:16:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2021-11-19 14:16:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 14:16:11,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:11,881 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:11,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:12,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:12,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:12,286 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash 156861623, now seen corresponding path program 1 times [2021-11-19 14:16:12,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:12,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554275115] [2021-11-19 14:16:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:12,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:12,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:12,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:12,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:16:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:12,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:12,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 14:16:13,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:16:13,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:13,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554275115] [2021-11-19 14:16:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554275115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:13,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080452154] [2021-11-19 14:16:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:13,816 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:13,819 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:13,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 14:16:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:16:14,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 14:16:14,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 14:16:15,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080452154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:15,446 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:16:15,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-19 14:16:15,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57759293] [2021-11-19 14:16:15,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:15,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:16:15,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:15,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:16:15,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:16:15,449 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-19 14:16:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:15,927 INFO L93 Difference]: Finished difference Result 189 states and 228 transitions. [2021-11-19 14:16:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:16:15,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 138 [2021-11-19 14:16:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:15,931 INFO L225 Difference]: With dead ends: 189 [2021-11-19 14:16:15,931 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:16:15,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:15,933 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 41 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:15,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 859 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:16:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:16:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:16:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.144578313253012) internal successors, (95), 84 states have internal predecessors, (95), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2021-11-19 14:16:15,962 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 138 [2021-11-19 14:16:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:15,965 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2021-11-19 14:16:15,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-19 14:16:15,966 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2021-11-19 14:16:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-19 14:16:15,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:15,988 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:15,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:16,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:16,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:16,393 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash 569570142, now seen corresponding path program 1 times [2021-11-19 14:16:16,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:16,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180667397] [2021-11-19 14:16:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:16,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:16,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:16,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:16:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:17,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:17,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 14:16:17,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:16:17,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:17,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180667397] [2021-11-19 14:16:17,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180667397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:17,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1179187342] [2021-11-19 14:16:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:17,944 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:17,944 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:17,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 14:16:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:18,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:18,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:16:18,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:16:19,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1179187342] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:19,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:16:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5] total 15 [2021-11-19 14:16:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096705789] [2021-11-19 14:16:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:19,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:16:19,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:16:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:16:19,451 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:19,527 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2021-11-19 14:16:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:16:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2021-11-19 14:16:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:19,533 INFO L225 Difference]: With dead ends: 184 [2021-11-19 14:16:19,533 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:16:19,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:16:19,535 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 5 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:19,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 576 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:16:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:16:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 84 states have internal predecessors, (94), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2021-11-19 14:16:19,548 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 140 [2021-11-19 14:16:19,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:19,548 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2021-11-19 14:16:19,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2021-11-19 14:16:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-19 14:16:19,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:19,552 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:19,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:19,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-19 14:16:19,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:19,963 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:19,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:19,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1870885008, now seen corresponding path program 1 times [2021-11-19 14:16:19,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:19,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888019914] [2021-11-19 14:16:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:19,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:19,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:19,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:19,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:16:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:20,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:20,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:16:20,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-19 14:16:21,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:21,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888019914] [2021-11-19 14:16:21,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888019914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:21,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153539490] [2021-11-19 14:16:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:21,356 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:21,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:21,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:21,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 14:16:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:21,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:16:21,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:16:22,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:16:22,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [153539490] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:22,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:16:22,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-11-19 14:16:22,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366901860] [2021-11-19 14:16:22,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:22,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:22,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:16:22,875 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:22,983 INFO L93 Difference]: Finished difference Result 184 states and 222 transitions. [2021-11-19 14:16:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 142 [2021-11-19 14:16:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:22,992 INFO L225 Difference]: With dead ends: 184 [2021-11-19 14:16:22,992 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:16:22,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:22,994 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 14 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:22,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 698 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:16:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:16:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 84 states have internal predecessors, (93), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2021-11-19 14:16:23,005 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 142 [2021-11-19 14:16:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:23,006 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2021-11-19 14:16:23,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2021-11-19 14:16:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-19 14:16:23,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:23,010 INFO L514 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:23,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:23,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:23,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:23,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash -101994346, now seen corresponding path program 1 times [2021-11-19 14:16:23,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:23,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584527096] [2021-11-19 14:16:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:23,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:23,419 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:23,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:16:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:24,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:24,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 14:16:24,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-19 14:16:24,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:24,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584527096] [2021-11-19 14:16:24,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584527096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:24,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1674433102] [2021-11-19 14:16:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:24,748 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:24,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:24,748 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:24,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 14:16:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:25,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:16:25,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:16:25,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:16:26,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1674433102] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:26,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:16:26,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-11-19 14:16:26,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569715366] [2021-11-19 14:16:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:26,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:26,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:16:26,217 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:26,347 INFO L93 Difference]: Finished difference Result 184 states and 220 transitions. [2021-11-19 14:16:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 144 [2021-11-19 14:16:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:26,350 INFO L225 Difference]: With dead ends: 184 [2021-11-19 14:16:26,350 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:16:26,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:26,352 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 12 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:26,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 695 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:16:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:16:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.108433734939759) internal successors, (92), 84 states have internal predecessors, (92), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2021-11-19 14:16:26,392 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 144 [2021-11-19 14:16:26,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:26,393 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2021-11-19 14:16:26,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2021-11-19 14:16:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-19 14:16:26,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:26,400 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:26,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:26,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:26,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:26,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1141154128, now seen corresponding path program 1 times [2021-11-19 14:16:26,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:26,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816063695] [2021-11-19 14:16:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:26,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:26,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:26,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:26,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:16:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:27,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 14:16:27,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 14:16:28,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:28,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816063695] [2021-11-19 14:16:28,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816063695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:28,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [313322458] [2021-11-19 14:16:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:28,260 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:28,262 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:28,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:16:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:16:28,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:16:29,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 14:16:29,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [313322458] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:16:29,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:16:29,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 17 [2021-11-19 14:16:29,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206045159] [2021-11-19 14:16:29,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:29,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:29,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:16:29,990 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:30,104 INFO L93 Difference]: Finished difference Result 184 states and 218 transitions. [2021-11-19 14:16:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 146 [2021-11-19 14:16:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:30,108 INFO L225 Difference]: With dead ends: 184 [2021-11-19 14:16:30,108 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 14:16:30,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:30,110 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 10 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:30,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 692 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 14:16:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 14:16:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 84 states have internal predecessors, (91), 29 states have call successors, (29), 15 states have call predecessors, (29), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:16:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2021-11-19 14:16:30,122 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 146 [2021-11-19 14:16:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:30,123 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2021-11-19 14:16:30,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:16:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2021-11-19 14:16:30,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-19 14:16:30,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:30,127 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:30,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 14:16:30,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 14:16:30,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:30,532 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash 845406158, now seen corresponding path program 1 times [2021-11-19 14:16:30,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:30,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700560259] [2021-11-19 14:16:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:30,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:30,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:30,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:30,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:16:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:31,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:31,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:16:31,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:32,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:32,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700560259] [2021-11-19 14:16:32,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700560259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:32,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1275632903] [2021-11-19 14:16:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:32,047 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:32,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:32,049 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:32,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:16:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:32,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:32,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:32,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:33,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1275632903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:33,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390925995] [2021-11-19 14:16:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:33,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:16:33,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:16:33,445 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:16:33,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 14:16:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:34,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:16:34,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 14:16:34,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-19 14:16:35,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390925995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:35,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:16:35,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 6, 7, 7] total 19 [2021-11-19 14:16:35,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68765715] [2021-11-19 14:16:35,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:35,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:16:35,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:16:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:35,066 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:16:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:35,113 INFO L93 Difference]: Finished difference Result 203 states and 234 transitions. [2021-11-19 14:16:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:16:35,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 148 [2021-11-19 14:16:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:35,121 INFO L225 Difference]: With dead ends: 203 [2021-11-19 14:16:35,122 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 14:16:35,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:35,124 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 4 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:35,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 705 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:16:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 14:16:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2021-11-19 14:16:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 88 states have internal predecessors, (95), 29 states have call successors, (29), 15 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-19 14:16:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2021-11-19 14:16:35,142 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 148 [2021-11-19 14:16:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:35,143 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2021-11-19 14:16:35,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:16:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2021-11-19 14:16:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-19 14:16:35,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:35,146 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:35,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:35,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-19 14:16:35,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:35,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:35,759 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1178061920, now seen corresponding path program 1 times [2021-11-19 14:16:35,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:35,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417055689] [2021-11-19 14:16:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:35,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:35,764 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:35,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:16:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:16:36,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:16:36,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:37,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:37,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417055689] [2021-11-19 14:16:37,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417055689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:37,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [513425571] [2021-11-19 14:16:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:37,235 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:37,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:37,236 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:37,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 14:16:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:37,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:37,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:38,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:38,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [513425571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:38,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225529083] [2021-11-19 14:16:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:38,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:16:38,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:16:38,718 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:16:38,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-19 14:16:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:39,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:16:39,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:39,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:40,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225529083] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:40,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:16:40,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 7, 7] total 15 [2021-11-19 14:16:40,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30976403] [2021-11-19 14:16:40,370 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:16:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:16:40,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:16:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:16:40,373 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-19 14:16:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:40,900 INFO L93 Difference]: Finished difference Result 275 states and 322 transitions. [2021-11-19 14:16:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:16:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 154 [2021-11-19 14:16:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:40,905 INFO L225 Difference]: With dead ends: 275 [2021-11-19 14:16:40,905 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 14:16:40,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 906 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:16:40,907 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 20 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:40,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1519 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:16:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 14:16:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2021-11-19 14:16:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 103 states have internal predecessors, (112), 30 states have call successors, (30), 15 states have call predecessors, (30), 17 states have return successors, (33), 31 states have call predecessors, (33), 29 states have call successors, (33) [2021-11-19 14:16:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2021-11-19 14:16:40,931 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 154 [2021-11-19 14:16:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:40,932 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2021-11-19 14:16:40,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.333333333333334) internal successors, (155), 14 states have internal predecessors, (155), 3 states have call successors, (44), 2 states have call predecessors, (44), 5 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-19 14:16:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2021-11-19 14:16:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 14:16:40,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:40,936 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:40,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:41,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-19 14:16:41,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-19 14:16:41,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:16:41,541 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1799391010, now seen corresponding path program 1 times [2021-11-19 14:16:41,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:41,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859249015] [2021-11-19 14:16:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:41,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:41,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:41,547 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:41,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:16:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:42,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:16:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:16:42,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:43,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:43,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859249015] [2021-11-19 14:16:43,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859249015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:43,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1962492490] [2021-11-19 14:16:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:43,572 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:43,573 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:43,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 14:16:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:46,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:16:46,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-19 14:16:46,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 14:16:46,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1962492490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:46,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435392933] [2021-11-19 14:16:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:46,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:16:46,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:16:46,966 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:16:46,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-19 14:16:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:47,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:16:47,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 14:16:48,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 14:16:49,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435392933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:16:49,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-19 14:16:49,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [10, 10, 10, 10] total 25 [2021-11-19 14:16:49,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257756444] [2021-11-19 14:16:49,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:16:49,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:16:49,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:16:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:16:49,029 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 14:16:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:16:49,188 INFO L93 Difference]: Finished difference Result 230 states and 270 transitions. [2021-11-19 14:16:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:16:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 158 [2021-11-19 14:16:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:16:49,194 INFO L225 Difference]: With dead ends: 230 [2021-11-19 14:16:49,194 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 14:16:49,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:16:49,198 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:16:49,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1120 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:16:49,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 14:16:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-19 14:16:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 95 states have internal predecessors, (102), 29 states have call successors, (29), 14 states have call predecessors, (29), 15 states have return successors, (31), 29 states have call predecessors, (31), 28 states have call successors, (31) [2021-11-19 14:16:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2021-11-19 14:16:49,218 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 158 [2021-11-19 14:16:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:16:49,220 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2021-11-19 14:16:49,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 14:16:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2021-11-19 14:16:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 14:16:49,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:49,232 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:49,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:49,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 14:16:49,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-19 14:16:49,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:49,847 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1437660373, now seen corresponding path program 1 times [2021-11-19 14:16:49,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:16:49,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954470957] [2021-11-19 14:16:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:49,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:16:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:16:49,851 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:16:49,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 14:16:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:50,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:16:50,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:16:50,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:16:51,678 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:16:51,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954470957] [2021-11-19 14:16:51,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954470957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:51,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1262309842] [2021-11-19 14:16:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:51,679 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:16:51,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:16:51,680 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:16:51,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-19 14:16:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:54,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:16:54,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:16:54,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:16:55,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1262309842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:55,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662896304] [2021-11-19 14:16:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:55,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:16:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:16:55,506 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:16:55,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-19 14:16:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:16:56,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:16:56,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:16:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:16:56,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:16:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:16:58,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662896304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:16:58,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:16:58,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-19 14:16:58,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782369593] [2021-11-19 14:16:58,111 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:16:58,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 14:16:58,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:16:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 14:16:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:16:58,115 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:17:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:00,143 INFO L93 Difference]: Finished difference Result 270 states and 318 transitions. [2021-11-19 14:17:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 14:17:00,144 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 163 [2021-11-19 14:17:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:00,146 INFO L225 Difference]: With dead ends: 270 [2021-11-19 14:17:00,146 INFO L226 Difference]: Without dead ends: 147 [2021-11-19 14:17:00,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 14:17:00,149 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 69 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:00,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1209 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:17:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-19 14:17:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-19 14:17:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 103 states have internal predecessors, (110), 29 states have call successors, (29), 14 states have call predecessors, (29), 15 states have return successors, (31), 29 states have call predecessors, (31), 28 states have call successors, (31) [2021-11-19 14:17:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2021-11-19 14:17:00,161 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 163 [2021-11-19 14:17:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:00,162 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2021-11-19 14:17:00,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 states have internal predecessors, (151), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:17:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2021-11-19 14:17:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 14:17:00,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:00,164 INFO L514 BasicCegarLoop]: trace histogram [14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:00,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:00,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-19 14:17:00,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:00,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:17:00,775 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1008983893, now seen corresponding path program 2 times [2021-11-19 14:17:00,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:00,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622210072] [2021-11-19 14:17:00,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:17:00,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:00,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:00,779 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:00,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 14:17:06,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:17:06,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:17:06,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:17:06,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 51 proven. 105 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:17:06,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:17:08,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:08,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622210072] [2021-11-19 14:17:08,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622210072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:17:08,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1476879054] [2021-11-19 14:17:08,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:17:08,743 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:17:08,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:17:08,744 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:17:08,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 14:17:54,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:17:54,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:17:54,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:17:54,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 51 proven. 105 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:17:55,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:17:56,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1476879054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:17:56,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483416539] [2021-11-19 14:17:56,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:17:56,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:17:56,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:17:56,120 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:17:56,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-19 14:18:37,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:18:37,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:18:37,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:18:37,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 51 proven. 105 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:18:37,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:18:41,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483416539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:18:41,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:18:41,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 50 [2021-11-19 14:18:41,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338033697] [2021-11-19 14:18:41,602 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:18:41,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-19 14:18:41,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-19 14:18:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=1693, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 14:18:41,607 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:18:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:52,762 INFO L93 Difference]: Finished difference Result 286 states and 342 transitions. [2021-11-19 14:18:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 14:18:52,764 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 171 [2021-11-19 14:18:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:52,766 INFO L225 Difference]: With dead ends: 286 [2021-11-19 14:18:52,767 INFO L226 Difference]: Without dead ends: 163 [2021-11-19 14:18:52,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1454, Invalid=2836, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 14:18:52,770 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 182 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:52,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2944 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:18:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-19 14:18:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-19 14:18:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 118 states have (on average 1.0677966101694916) internal successors, (126), 119 states have internal predecessors, (126), 29 states have call successors, (29), 14 states have call predecessors, (29), 15 states have return successors, (31), 29 states have call predecessors, (31), 28 states have call successors, (31) [2021-11-19 14:18:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2021-11-19 14:18:52,785 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 171 [2021-11-19 14:18:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:52,786 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2021-11-19 14:18:52,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.5) internal successors, (175), 50 states have internal predecessors, (175), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:18:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2021-11-19 14:18:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:18:52,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:52,789 INFO L514 BasicCegarLoop]: trace histogram [30, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:52,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:53,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:53,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:53,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:18:53,415 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:18:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1668139947, now seen corresponding path program 3 times [2021-11-19 14:18:53,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:53,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767365644] [2021-11-19 14:18:53,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:18:53,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:53,419 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:53,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 14:19:34,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-19 14:19:34,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:19:35,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-19 14:19:35,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:36,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:19:36,299 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-19 14:19:36,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 14:19:38,423 WARN L860 $PredicateComparison]: unable to prove that (exists ((aws_atomic_init_ptr_~p.offset (_ BitVec 64))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_atomic_init_ptr_#in~var.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_atomic_init_ptr_#in~var.base|) |c_aws_atomic_init_ptr_#in~var.offset| aws_atomic_init_ptr_~p.offset)))) is different from true [2021-11-19 14:19:38,497 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-19 14:19:38,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 14:19:38,648 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-19 14:19:38,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 14:19:38,714 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-19 14:19:38,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2021-11-19 14:19:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-11-19 14:19:42,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:45,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-19 14:19:45,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2021-11-19 14:19:45,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2021-11-19 14:19:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-11-19 14:19:47,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:47,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767365644] [2021-11-19 14:19:47,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767365644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:47,211 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:47,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25, 16] imperfect sequences [] total 37 [2021-11-19 14:19:47,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476770064] [2021-11-19 14:19:47,211 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:47,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-19 14:19:47,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-19 14:19:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1147, Unknown=1, NotChecked=68, Total=1332 [2021-11-19 14:19:47,214 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand has 37 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 17 states have call successors, (39), 4 states have call predecessors, (39), 12 states have return successors, (39), 19 states have call predecessors, (39), 16 states have call successors, (39) [2021-11-19 14:19:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:53,112 INFO L93 Difference]: Finished difference Result 295 states and 347 transitions. [2021-11-19 14:19:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 14:19:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 17 states have call successors, (39), 4 states have call predecessors, (39), 12 states have return successors, (39), 19 states have call predecessors, (39), 16 states have call successors, (39) Word has length 187 [2021-11-19 14:19:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:53,118 INFO L225 Difference]: With dead ends: 295 [2021-11-19 14:19:53,118 INFO L226 Difference]: Without dead ends: 222 [2021-11-19 14:19:53,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 336 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=252, Invalid=2831, Unknown=1, NotChecked=108, Total=3192 [2021-11-19 14:19:53,120 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 115 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 477 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:53,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1160 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1241 Invalid, 0 Unknown, 477 Unchecked, 3.5s Time] [2021-11-19 14:19:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-19 14:19:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2021-11-19 14:19:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 156 states have (on average 1.0833333333333333) internal successors, (169), 157 states have internal predecessors, (169), 34 states have call successors, (34), 18 states have call predecessors, (34), 19 states have return successors, (39), 34 states have call predecessors, (39), 33 states have call successors, (39) [2021-11-19 14:19:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 242 transitions. [2021-11-19 14:19:53,135 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 242 transitions. Word has length 187 [2021-11-19 14:19:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:53,147 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 242 transitions. [2021-11-19 14:19:53,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 17 states have call successors, (39), 4 states have call predecessors, (39), 12 states have return successors, (39), 19 states have call predecessors, (39), 16 states have call successors, (39) [2021-11-19 14:19:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 242 transitions. [2021-11-19 14:19:53,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:19:53,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:53,150 INFO L514 BasicCegarLoop]: trace histogram [30, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:53,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:53,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:53,366 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:19:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash -967075369, now seen corresponding path program 1 times [2021-11-19 14:19:53,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:53,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255341394] [2021-11-19 14:19:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:53,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:53,372 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:53,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 14:19:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:54,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 14:19:54,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 51 proven. 465 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:19:55,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:20:02,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:20:02,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255341394] [2021-11-19 14:20:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255341394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:02,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [217280386] [2021-11-19 14:20:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:02,117 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:20:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:20:02,119 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:20:02,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-19 14:20:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:04,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 14:20:04,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 51 proven. 465 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:20:05,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:20:07,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [217280386] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:07,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145478678] [2021-11-19 14:20:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:20:07,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:20:07,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:20:07,649 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:20:07,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-19 14:20:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:20:08,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-19 14:20:08,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:20:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 51 proven. 465 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:20:09,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:20:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-19 14:20:22,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145478678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:20:22,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:20:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34, 34, 34, 34] total 98 [2021-11-19 14:20:22,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493439126] [2021-11-19 14:20:22,530 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:20:22,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-19 14:20:22,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:20:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-19 14:20:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2523, Invalid=6983, Unknown=0, NotChecked=0, Total=9506 [2021-11-19 14:20:22,536 INFO L87 Difference]: Start difference. First operand 210 states and 242 transitions. Second operand has 98 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 98 states have internal predecessors, (223), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:20:40,452 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 144 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:20:54,668 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 136 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:21:02,729 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 132 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:21:11,390 WARN L227 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 128 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:22:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:10,082 INFO L93 Difference]: Finished difference Result 412 states and 502 transitions. [2021-11-19 14:22:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-19 14:22:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 98 states have internal predecessors, (223), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 187 [2021-11-19 14:22:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:10,086 INFO L225 Difference]: With dead ends: 412 [2021-11-19 14:22:10,087 INFO L226 Difference]: Without dead ends: 242 [2021-11-19 14:22:10,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 114.0s TimeCoverageRelationStatistics Valid=4494, Invalid=12276, Unknown=0, NotChecked=0, Total=16770 [2021-11-19 14:22:10,100 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 477 mSDsluCounter, 4289 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:10,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 4424 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 14:22:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-19 14:22:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-11-19 14:22:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 188 states have (on average 1.074468085106383) internal successors, (202), 189 states have internal predecessors, (202), 34 states have call successors, (34), 18 states have call predecessors, (34), 19 states have return successors, (39), 34 states have call predecessors, (39), 33 states have call successors, (39) [2021-11-19 14:22:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 275 transitions. [2021-11-19 14:22:10,126 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 275 transitions. Word has length 187 [2021-11-19 14:22:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:10,127 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 275 transitions. [2021-11-19 14:22:10,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 98 states have internal predecessors, (223), 2 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:22:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 275 transitions. [2021-11-19 14:22:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-19 14:22:10,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:10,147 INFO L514 BasicCegarLoop]: trace histogram [40, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:10,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:10,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2021-11-19 14:22:10,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:10,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:10,759 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:10,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:10,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1256979191, now seen corresponding path program 2 times [2021-11-19 14:22:10,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:10,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19107216] [2021-11-19 14:22:10,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:22:10,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:10,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:10,765 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:10,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5ccb76b-4d0b-4593-bbae-5beb343d0904/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process