./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:31:09,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:31:09,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:31:09,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:31:09,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:31:09,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:31:09,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:31:09,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:31:09,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:31:09,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:31:09,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:31:09,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:31:09,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:31:09,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:31:09,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:31:09,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:31:09,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:31:09,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:31:09,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:31:09,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:31:09,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:31:09,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:31:09,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:31:09,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:31:09,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:31:09,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:31:09,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:31:09,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:31:09,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:31:09,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:31:09,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:31:09,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:31:09,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:31:09,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:31:09,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:31:09,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:31:09,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:31:09,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:31:09,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:31:09,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:31:09,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:31:09,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:31:09,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:31:09,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:31:09,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:31:09,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:31:09,806 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:31:09,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:31:09,807 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:31:09,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:31:09,813 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:31:09,813 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:31:09,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:31:09,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:31:09,814 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:31:09,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:31:09,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:31:09,815 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:31:09,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:31:09,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:31:09,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:31:09,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:31:09,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:31:09,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:31:09,817 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:31:09,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:31:09,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:31:09,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:31:09,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:31:09,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:31:09,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:09,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:31:09,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:31:09,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:31:09,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:31:09,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:31:09,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:31:09,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:31:09,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:31:09,821 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_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b [2021-11-13 01:31:10,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:31:10,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:31:10,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:31:10,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:31:10,101 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:31:10,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-13 01:31:10,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/7ea29adf0/da7897f49b7946debca8e8f2aea9c855/FLAGa9358d8d7 [2021-11-13 01:31:11,178 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:31:11,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-13 01:31:11,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/7ea29adf0/da7897f49b7946debca8e8f2aea9c855/FLAGa9358d8d7 [2021-11-13 01:31:11,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/7ea29adf0/da7897f49b7946debca8e8f2aea9c855 [2021-11-13 01:31:11,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:31:11,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:31:11,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:11,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:31:11,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:31:11,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:11" (1/1) ... [2021-11-13 01:31:11,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0d501f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:11, skipping insertion in model container [2021-11-13 01:31:11,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:11" (1/1) ... [2021-11-13 01:31:11,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:31:11,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:11,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-13 01:31:12,007 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-13 01:31:12,033 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:31:12,039 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:13,214 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,224 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,244 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:13,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:13,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:13,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:13,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:13,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:13,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:13,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:13,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:13,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:13,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:13,884 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:14,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:14,030 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:14,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:14,303 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) [2021-11-13 01:31:14,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7082fc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:14, skipping insertion in model container [2021-11-13 01:31:14,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:14,304 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:31:14,306 INFO L158 Benchmark]: Toolchain (without parser) took 2720.99ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 115.9MB in the end (delta: -48.0MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2021-11-13 01:31:14,307 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:31:14,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2716.03ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 67.7MB in the beginning and 115.9MB in the end (delta: -48.2MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2021-11-13 01:31:14,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2716.03ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 67.7MB in the beginning and 115.9MB in the end (delta: -48.2MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:31:16,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:31:16,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:31:16,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:31:16,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:31:16,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:31:16,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:31:16,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:31:16,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:31:16,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:31:16,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:31:16,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:31:16,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:31:16,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:31:16,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:31:16,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:31:16,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:31:16,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:31:16,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:31:16,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:31:16,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:31:16,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:31:16,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:31:16,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:31:16,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:31:16,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:31:16,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:31:16,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:31:16,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:31:16,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:31:16,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:31:16,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:31:16,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:31:16,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:31:16,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:31:16,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:31:16,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:31:16,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:31:16,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:31:16,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:31:16,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:31:16,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:31:16,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:31:16,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:31:16,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:31:16,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:31:16,658 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:31:16,658 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:31:16,658 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:31:16,658 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:31:16,659 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:31:16,659 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:31:16,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:31:16,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:31:16,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:31:16,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:31:16,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:31:16,662 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:31:16,662 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:31:16,662 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:31:16,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:31:16,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:31:16,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:31:16,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:31:16,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:31:16,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:31:16,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:16,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:31:16,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:31:16,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:31:16,665 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:31:16,665 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:16,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:31:16,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:31:16,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:31:16,666 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_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b [2021-11-13 01:31:17,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:31:17,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:31:17,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:31:17,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:31:17,049 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:31:17,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-13 01:31:17,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/e6e84298b/e085de2624634193b82bbec59c36633d/FLAGb4a69cf15 [2021-11-13 01:31:18,091 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:31:18,092 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-13 01:31:18,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/e6e84298b/e085de2624634193b82bbec59c36633d/FLAGb4a69cf15 [2021-11-13 01:31:18,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/data/e6e84298b/e085de2624634193b82bbec59c36633d [2021-11-13 01:31:18,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:31:18,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:31:18,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:18,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:31:18,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:31:18,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:18" (1/1) ... [2021-11-13 01:31:18,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4177a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:18, skipping insertion in model container [2021-11-13 01:31:18,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:18" (1/1) ... [2021-11-13 01:31:18,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:31:18,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:18,983 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-13 01:31:18,990 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-13 01:31:19,018 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:31:19,025 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:20,031 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,032 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,032 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,033 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,051 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:20,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:20,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:20,504 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:20,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:20,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:20,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:20,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:20,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:20,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:20,706 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:20,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:20,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:21,108 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:31:21,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:21,209 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-13 01:31:21,210 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-13 01:31:21,211 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:31:21,212 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:21,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,264 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:21,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:21,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:21,334 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:21,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:21,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:21,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:21,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:21,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:21,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:21,371 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:21,440 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,441 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:21,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:31:21,575 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-13 01:31:21,576 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-13 01:31:21,577 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:31:21,578 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:21,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,641 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,642 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:21,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:21,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:21,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:21,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:21,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:21,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:21,690 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:21,690 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:21,691 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:21,713 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:21,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:21,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:22,227 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:31:22,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22 WrapperNode [2021-11-13 01:31:22,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:22,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:22,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:31:22,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:31:22,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:22,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:31:22,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:31:22,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:31:22,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:31:22,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:31:22,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:31:22,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:31:22,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (1/1) ... [2021-11-13 01:31:22,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:22,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:31:22,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:31:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:31:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2021-11-13 01:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2021-11-13 01:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:31:22,724 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2021-11-13 01:31:22,725 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2021-11-13 01:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-13 01:31:22,725 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-13 01:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:31:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2021-11-13 01:31:22,726 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2021-11-13 01:31:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:31:22,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:31:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:31:22,727 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:31:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:31:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2021-11-13 01:31:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2021-11-13 01:31:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:31:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:31:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2021-11-13 01:31:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2021-11-13 01:31:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:31:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:31:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:31:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:31:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2021-11-13 01:31:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2021-11-13 01:31:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2021-11-13 01:31:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2021-11-13 01:31:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:31:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:31:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2021-11-13 01:31:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2021-11-13 01:31:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2021-11-13 01:31:22,731 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2021-11-13 01:31:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:31:22,731 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:31:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2021-11-13 01:31:22,732 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2021-11-13 01:31:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2021-11-13 01:31:22,732 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2021-11-13 01:31:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2021-11-13 01:31:22,732 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2021-11-13 01:31:22,733 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2021-11-13 01:31:22,733 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2021-11-13 01:31:49,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:31:49,232 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:31:49,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:49 BoogieIcfgContainer [2021-11-13 01:31:49,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:31:49,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:31:49,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:31:49,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:31:49,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:31:18" (1/3) ... [2021-11-13 01:31:49,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aba5f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:49, skipping insertion in model container [2021-11-13 01:31:49,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:22" (2/3) ... [2021-11-13 01:31:49,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aba5f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:49, skipping insertion in model container [2021-11-13 01:31:49,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:49" (3/3) ... [2021-11-13 01:31:49,242 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_up_to_harness.i [2021-11-13 01:31:49,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:31:49,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 01:31:49,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:31:49,304 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 [2021-11-13 01:31:49,305 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 01:31:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 232 states have (on average 1.2112068965517242) internal successors, (281), 234 states have internal predecessors, (281), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-13 01:31:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 01:31:49,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:49,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:31:49,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1080850555, now seen corresponding path program 1 times [2021-11-13 01:31:49,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:49,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386124634] [2021-11-13 01:31:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:49,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:49,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:49,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:31:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:53,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:31:53,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:31:53,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:31:53,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:53,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386124634] [2021-11-13 01:31:53,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386124634] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:53,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:53,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:31:53,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682720042] [2021-11-13 01:31:53,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:53,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:31:53,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:31:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:31:53,907 INFO L87 Difference]: Start difference. First operand has 409 states, 232 states have (on average 1.2112068965517242) internal successors, (281), 234 states have internal predecessors, (281), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:31:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:53,997 INFO L93 Difference]: Finished difference Result 812 states and 1289 transitions. [2021-11-13 01:31:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:31:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2021-11-13 01:31:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:54,015 INFO L225 Difference]: With dead ends: 812 [2021-11-13 01:31:54,015 INFO L226 Difference]: Without dead ends: 403 [2021-11-13 01:31:54,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:31:54,027 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:54,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:31:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-13 01:31:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-11-13 01:31:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 227 states have (on average 1.2026431718061674) internal successors, (273), 229 states have internal predecessors, (273), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2021-11-13 01:31:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 580 transitions. [2021-11-13 01:31:54,116 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 580 transitions. Word has length 52 [2021-11-13 01:31:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:54,117 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 580 transitions. [2021-11-13 01:31:54,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:31:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 580 transitions. [2021-11-13 01:31:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 01:31:54,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:54,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-13 01:31:54,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:54,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:54,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:54,338 INFO L85 PathProgramCache]: Analyzing trace with hash 135004093, now seen corresponding path program 1 times [2021-11-13 01:31:54,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:54,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683992223] [2021-11-13 01:31:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:54,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:54,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:54,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:54,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:31:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:58,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:58,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:31:58,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:31:58,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:58,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683992223] [2021-11-13 01:31:58,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683992223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:58,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:58,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-13 01:31:58,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652774454] [2021-11-13 01:31:58,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:58,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:31:58,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:31:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:58,651 INFO L87 Difference]: Start difference. First operand 403 states and 580 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-13 01:31:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:59,023 INFO L93 Difference]: Finished difference Result 801 states and 1203 transitions. [2021-11-13 01:31:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:31:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 52 [2021-11-13 01:31:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:59,031 INFO L225 Difference]: With dead ends: 801 [2021-11-13 01:31:59,031 INFO L226 Difference]: Without dead ends: 415 [2021-11-13 01:31:59,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:31:59,035 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 28 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.09ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:59,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 3403 Invalid, 72 Unknown, 0 Unchecked, 26.09ms Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 192.83ms Time] [2021-11-13 01:31:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-13 01:31:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-11-13 01:31:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 236 states have (on average 1.2076271186440677) internal successors, (285), 238 states have internal predecessors, (285), 155 states have call successors, (155), 22 states have call predecessors, (155), 22 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-13 01:31:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 594 transitions. [2021-11-13 01:31:59,080 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 594 transitions. Word has length 52 [2021-11-13 01:31:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:59,081 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 594 transitions. [2021-11-13 01:31:59,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-13 01:31:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 594 transitions. [2021-11-13 01:31:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 01:31:59,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:59,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-13 01:31:59,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:59,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:59,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1441797306, now seen corresponding path program 1 times [2021-11-13 01:31:59,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:59,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441179733] [2021-11-13 01:31:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:59,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:59,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:59,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:59,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:32:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:03,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:03,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:32:03,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:32:04,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:04,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441179733] [2021-11-13 01:32:04,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441179733] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:04,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:04,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:32:04,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353452020] [2021-11-13 01:32:04,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:04,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:04,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:32:04,485 INFO L87 Difference]: Start difference. First operand 415 states and 594 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:05,044 INFO L93 Difference]: Finished difference Result 827 states and 1191 transitions. [2021-11-13 01:32:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:32:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 85 [2021-11-13 01:32:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:05,052 INFO L225 Difference]: With dead ends: 827 [2021-11-13 01:32:05,052 INFO L226 Difference]: Without dead ends: 424 [2021-11-13 01:32:05,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:32:05,055 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 8 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 355.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.63ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 399.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:05,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2798 Invalid, 105 Unknown, 0 Unchecked, 12.63ms Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 399.47ms Time] [2021-11-13 01:32:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-13 01:32:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-13 01:32:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 242 states have (on average 1.1983471074380165) internal successors, (290), 244 states have internal predecessors, (290), 156 states have call successors, (156), 24 states have call predecessors, (156), 24 states have return successors, (156), 155 states have call predecessors, (156), 155 states have call successors, (156) [2021-11-13 01:32:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 602 transitions. [2021-11-13 01:32:05,085 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 602 transitions. Word has length 85 [2021-11-13 01:32:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:05,086 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 602 transitions. [2021-11-13 01:32:05,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 602 transitions. [2021-11-13 01:32:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:32:05,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:05,090 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-11-13 01:32:05,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:05,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:05,314 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1129671498, now seen corresponding path program 1 times [2021-11-13 01:32:05,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:05,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29379337] [2021-11-13 01:32:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:05,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:05,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:05,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:05,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:32:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:09,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:09,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 01:32:10,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:32:11,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:11,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29379337] [2021-11-13 01:32:11,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29379337] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:11,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:11,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-13 01:32:11,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547538013] [2021-11-13 01:32:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:11,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:32:11,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:32:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:32:11,816 INFO L87 Difference]: Start difference. First operand 424 states and 602 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:12,693 INFO L93 Difference]: Finished difference Result 841 states and 1194 transitions. [2021-11-13 01:32:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:32:12,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 87 [2021-11-13 01:32:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:12,702 INFO L225 Difference]: With dead ends: 841 [2021-11-13 01:32:12,703 INFO L226 Difference]: Without dead ends: 426 [2021-11-13 01:32:12,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:32:12,707 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 10 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 447.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.22ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:12,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3347 Invalid, 138 Unknown, 0 Unchecked, 11.22ms Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 502.96ms Time] [2021-11-13 01:32:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-13 01:32:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2021-11-13 01:32:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 243 states have (on average 1.1934156378600822) internal successors, (290), 246 states have internal predecessors, (290), 156 states have call successors, (156), 24 states have call predecessors, (156), 25 states have return successors, (157), 155 states have call predecessors, (157), 155 states have call successors, (157) [2021-11-13 01:32:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 603 transitions. [2021-11-13 01:32:12,735 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 603 transitions. Word has length 87 [2021-11-13 01:32:12,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:12,736 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 603 transitions. [2021-11-13 01:32:12,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 603 transitions. [2021-11-13 01:32:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 01:32:12,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:12,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:32:12,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:12,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:12,953 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -752690746, now seen corresponding path program 1 times [2021-11-13 01:32:12,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:12,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119515256] [2021-11-13 01:32:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:12,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:12,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:12,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:12,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:32:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:16,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:32:16,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 01:32:17,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:32:20,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:20,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119515256] [2021-11-13 01:32:20,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119515256] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:20,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:20,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-13 01:32:20,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112769251] [2021-11-13 01:32:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:20,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:32:20,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:32:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:32:20,448 INFO L87 Difference]: Start difference. First operand 426 states and 603 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:21,789 INFO L93 Difference]: Finished difference Result 846 states and 1201 transitions. [2021-11-13 01:32:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:32:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2021-11-13 01:32:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:21,796 INFO L225 Difference]: With dead ends: 846 [2021-11-13 01:32:21,796 INFO L226 Difference]: Without dead ends: 432 [2021-11-13 01:32:21,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:32:21,800 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 13 mSDsluCounter, 3330 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 580.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.22ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 637.06ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:21,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 3894 Invalid, 194 Unknown, 0 Unchecked, 11.22ms Time], IncrementalHoareTripleChecker [18 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 637.06ms Time] [2021-11-13 01:32:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-13 01:32:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2021-11-13 01:32:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 247 states have (on average 1.194331983805668) internal successors, (295), 249 states have internal predecessors, (295), 156 states have call successors, (156), 25 states have call predecessors, (156), 25 states have return successors, (157), 155 states have call predecessors, (157), 155 states have call successors, (157) [2021-11-13 01:32:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 608 transitions. [2021-11-13 01:32:21,826 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 608 transitions. Word has length 89 [2021-11-13 01:32:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:21,827 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 608 transitions. [2021-11-13 01:32:21,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 608 transitions. [2021-11-13 01:32:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 01:32:21,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:21,829 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:32:21,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:22,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:22,058 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1947160898, now seen corresponding path program 1 times [2021-11-13 01:32:22,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:22,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221495132] [2021-11-13 01:32:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:22,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:22,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:22,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:32:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:26,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:26,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-13 01:32:27,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:32:31,263 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:31,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221495132] [2021-11-13 01:32:31,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221495132] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:31,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:31,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-11-13 01:32:31,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343372342] [2021-11-13 01:32:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:31,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:32:31,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:32:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:32:31,265 INFO L87 Difference]: Start difference. First operand 430 states and 608 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:33,358 INFO L93 Difference]: Finished difference Result 852 states and 1204 transitions. [2021-11-13 01:32:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 01:32:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 91 [2021-11-13 01:32:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:33,365 INFO L225 Difference]: With dead ends: 852 [2021-11-13 01:32:33,365 INFO L226 Difference]: Without dead ends: 434 [2021-11-13 01:32:33,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:32:33,370 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 17 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 697.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.92ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 755.06ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:33,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 4441 Invalid, 229 Unknown, 0 Unchecked, 10.92ms Time], IncrementalHoareTripleChecker [21 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 755.06ms Time] [2021-11-13 01:32:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-13 01:32:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2021-11-13 01:32:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 247 states have (on average 1.1902834008097165) internal successors, (294), 249 states have internal predecessors, (294), 156 states have call successors, (156), 25 states have call predecessors, (156), 25 states have return successors, (157), 155 states have call predecessors, (157), 155 states have call successors, (157) [2021-11-13 01:32:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 607 transitions. [2021-11-13 01:32:33,398 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 607 transitions. Word has length 91 [2021-11-13 01:32:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:33,398 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 607 transitions. [2021-11-13 01:32:33,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-13 01:32:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 607 transitions. [2021-11-13 01:32:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 01:32:33,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:33,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:32:33,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:33,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:33,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1975904838, now seen corresponding path program 1 times [2021-11-13 01:32:33,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:33,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629765050] [2021-11-13 01:32:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:33,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:33,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:33,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:32:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:37,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:37,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:32:37,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:32:38,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:38,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629765050] [2021-11-13 01:32:38,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629765050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:38,229 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:38,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-13 01:32:38,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422932019] [2021-11-13 01:32:38,230 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:38,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:32:38,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:32:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:38,231 INFO L87 Difference]: Start difference. First operand 430 states and 607 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 01:32:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:38,494 INFO L93 Difference]: Finished difference Result 450 states and 630 transitions. [2021-11-13 01:32:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:32:38,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 93 [2021-11-13 01:32:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:38,500 INFO L225 Difference]: With dead ends: 450 [2021-11-13 01:32:38,500 INFO L226 Difference]: Without dead ends: 447 [2021-11-13 01:32:38,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:38,502 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 26 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.33ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:38,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3429 Invalid, 70 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 161.33ms Time] [2021-11-13 01:32:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-13 01:32:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2021-11-13 01:32:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 257 states have (on average 1.198443579766537) internal successors, (308), 259 states have internal predecessors, (308), 157 states have call successors, (157), 27 states have call predecessors, (157), 27 states have return successors, (158), 156 states have call predecessors, (158), 156 states have call successors, (158) [2021-11-13 01:32:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 623 transitions. [2021-11-13 01:32:38,531 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 623 transitions. Word has length 93 [2021-11-13 01:32:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:38,532 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 623 transitions. [2021-11-13 01:32:38,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 01:32:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 623 transitions. [2021-11-13 01:32:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-13 01:32:38,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:38,536 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:32:38,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:38,758 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 845259220, now seen corresponding path program 1 times [2021-11-13 01:32:38,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:38,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3813487] [2021-11-13 01:32:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:38,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:38,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:38,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:38,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:32:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:43,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:43,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-13 01:32:44,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 34 proven. 45 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2021-11-13 01:32:45,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:45,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3813487] [2021-11-13 01:32:45,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3813487] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:45,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:45,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:32:45,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141858141] [2021-11-13 01:32:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:45,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:45,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:45,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:45,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:32:45,519 INFO L87 Difference]: Start difference. First operand 443 states and 623 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 01:32:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:45,868 INFO L93 Difference]: Finished difference Result 859 states and 1251 transitions. [2021-11-13 01:32:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:32:45,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 267 [2021-11-13 01:32:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:45,875 INFO L225 Difference]: With dead ends: 859 [2021-11-13 01:32:45,875 INFO L226 Difference]: Without dead ends: 450 [2021-11-13 01:32:45,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:32:45,882 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 8 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:45,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2841 Invalid, 70 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 228.02ms Time] [2021-11-13 01:32:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-13 01:32:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2021-11-13 01:32:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 260 states have (on average 1.1923076923076923) internal successors, (310), 262 states have internal predecessors, (310), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (158), 157 states have call predecessors, (158), 157 states have call successors, (158) [2021-11-13 01:32:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 626 transitions. [2021-11-13 01:32:45,918 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 626 transitions. Word has length 267 [2021-11-13 01:32:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:45,919 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 626 transitions. [2021-11-13 01:32:45,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 01:32:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 626 transitions. [2021-11-13 01:32:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-13 01:32:45,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:45,925 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:32:45,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 01:32:46,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:46,146 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash 92072084, now seen corresponding path program 1 times [2021-11-13 01:32:46,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:46,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283048799] [2021-11-13 01:32:46,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:46,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:46,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:46,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:46,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:32:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:50,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-13 01:32:51,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 40 proven. 48 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-13 01:32:54,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:54,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283048799] [2021-11-13 01:32:54,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283048799] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:54,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:54,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-13 01:32:54,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820263358] [2021-11-13 01:32:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:54,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:32:54,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:32:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:32:54,282 INFO L87 Difference]: Start difference. First operand 448 states and 626 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 01:32:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:55,024 INFO L93 Difference]: Finished difference Result 858 states and 1241 transitions. [2021-11-13 01:32:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:32:55,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 271 [2021-11-13 01:32:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:55,030 INFO L225 Difference]: With dead ends: 858 [2021-11-13 01:32:55,031 INFO L226 Difference]: Without dead ends: 444 [2021-11-13 01:32:55,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:32:55,036 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 12 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 342.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:55,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3383 Invalid, 105 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 342.16ms Time] [2021-11-13 01:32:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-13 01:32:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2021-11-13 01:32:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 255 states have (on average 1.1764705882352942) internal successors, (300), 256 states have internal predecessors, (300), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-13 01:32:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 615 transitions. [2021-11-13 01:32:55,067 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 615 transitions. Word has length 271 [2021-11-13 01:32:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:55,068 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 615 transitions. [2021-11-13 01:32:55,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 01:32:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 615 transitions. [2021-11-13 01:32:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-13 01:32:55,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:55,074 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:32:55,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:55,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:55,298 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1909520800, now seen corresponding path program 1 times [2021-11-13 01:32:55,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:55,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051844152] [2021-11-13 01:32:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:55,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:55,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:55,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:55,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:32:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:59,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2305 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:32:59,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-13 01:33:01,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-11-13 01:33:04,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:04,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051844152] [2021-11-13 01:33:04,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051844152] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:04,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:04,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-13 01:33:04,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111157359] [2021-11-13 01:33:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:04,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:33:04,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:33:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:33:04,953 INFO L87 Difference]: Start difference. First operand 442 states and 615 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 01:33:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:05,939 INFO L93 Difference]: Finished difference Result 852 states and 1225 transitions. [2021-11-13 01:33:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:33:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 286 [2021-11-13 01:33:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:05,945 INFO L225 Difference]: With dead ends: 852 [2021-11-13 01:33:05,946 INFO L226 Difference]: Without dead ends: 444 [2021-11-13 01:33:05,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:33:05,951 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 17 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 373.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:05,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 3936 Invalid, 131 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 373.51ms Time] [2021-11-13 01:33:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-13 01:33:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2021-11-13 01:33:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 255 states have (on average 1.1725490196078432) internal successors, (299), 256 states have internal predecessors, (299), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-13 01:33:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 614 transitions. [2021-11-13 01:33:05,986 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 614 transitions. Word has length 286 [2021-11-13 01:33:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:05,987 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 614 transitions. [2021-11-13 01:33:05,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 01:33:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 614 transitions. [2021-11-13 01:33:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-13 01:33:05,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:05,994 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:33:06,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:06,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:06,210 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1819659488, now seen corresponding path program 1 times [2021-11-13 01:33:06,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:06,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302095243] [2021-11-13 01:33:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:06,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:06,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:06,218 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:06,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:33:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:10,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:33:10,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-13 01:33:12,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 12 proven. 62 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-13 01:33:17,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:17,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302095243] [2021-11-13 01:33:17,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302095243] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:17,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:17,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-11-13 01:33:17,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735933062] [2021-11-13 01:33:17,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:17,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:33:17,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:33:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:33:17,475 INFO L87 Difference]: Start difference. First operand 442 states and 614 transitions. Second operand has 9 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 01:33:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:18,751 INFO L93 Difference]: Finished difference Result 852 states and 1223 transitions. [2021-11-13 01:33:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:33:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 290 [2021-11-13 01:33:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:18,758 INFO L225 Difference]: With dead ends: 852 [2021-11-13 01:33:18,758 INFO L226 Difference]: Without dead ends: 444 [2021-11-13 01:33:18,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:33:18,764 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 21 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:18,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4489 Invalid, 162 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [19 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 417.81ms Time] [2021-11-13 01:33:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-13 01:33:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2021-11-13 01:33:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 255 states have (on average 1.1686274509803922) internal successors, (298), 256 states have internal predecessors, (298), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-13 01:33:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 613 transitions. [2021-11-13 01:33:18,798 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 613 transitions. Word has length 290 [2021-11-13 01:33:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:18,799 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 613 transitions. [2021-11-13 01:33:18,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 01:33:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 613 transitions. [2021-11-13 01:33:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-13 01:33:18,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:18,807 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:33:18,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:19,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:19,026 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1475767136, now seen corresponding path program 1 times [2021-11-13 01:33:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:19,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140654594] [2021-11-13 01:33:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:19,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:19,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:19,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:19,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:33:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:23,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:33:23,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-13 01:33:24,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-13 01:33:25,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:25,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140654594] [2021-11-13 01:33:25,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140654594] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:25,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:25,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-13 01:33:25,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121012200] [2021-11-13 01:33:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:25,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:33:25,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:33:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:33:25,698 INFO L87 Difference]: Start difference. First operand 442 states and 613 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-13 01:33:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:26,235 INFO L93 Difference]: Finished difference Result 850 states and 1199 transitions. [2021-11-13 01:33:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:33:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 294 [2021-11-13 01:33:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:26,242 INFO L225 Difference]: With dead ends: 850 [2021-11-13 01:33:26,243 INFO L226 Difference]: Without dead ends: 447 [2021-11-13 01:33:26,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:33:26,247 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 164 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 388.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 444.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:26,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 1876 Invalid, 117 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 444.91ms Time] [2021-11-13 01:33:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-13 01:33:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-13 01:33:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 259 states have (on average 1.16988416988417) internal successors, (303), 261 states have internal predecessors, (303), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (169), 157 states have call predecessors, (169), 157 states have call successors, (169) [2021-11-13 01:33:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 630 transitions. [2021-11-13 01:33:26,279 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 630 transitions. Word has length 294 [2021-11-13 01:33:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:26,280 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 630 transitions. [2021-11-13 01:33:26,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-13 01:33:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 630 transitions. [2021-11-13 01:33:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-13 01:33:26,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:26,286 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:33:26,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:26,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:26,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash -959546139, now seen corresponding path program 1 times [2021-11-13 01:33:26,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:26,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835799344] [2021-11-13 01:33:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:26,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:26,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:26,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:26,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:33:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:31,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:33:31,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:31,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:33:33,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:33,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:33:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-13 01:33:38,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:45,599 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 100 treesize of output 94 [2021-11-13 01:33:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 01:33:46,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:46,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835799344] [2021-11-13 01:33:46,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835799344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:46,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128755632] [2021-11-13 01:33:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:46,805 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:46,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:46,807 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:46,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 01:33:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:48,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:48,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-13 01:33:49,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2021-11-13 01:33:49,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128755632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:49,980 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:33:49,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [22, 20] total 41 [2021-11-13 01:33:49,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632235534] [2021-11-13 01:33:49,981 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:49,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:49,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 01:33:49,984 INFO L87 Difference]: Start difference. First operand 447 states and 630 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:33:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:50,161 INFO L93 Difference]: Finished difference Result 828 states and 1190 transitions. [2021-11-13 01:33:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:33:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 296 [2021-11-13 01:33:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:50,168 INFO L225 Difference]: With dead ends: 828 [2021-11-13 01:33:50,168 INFO L226 Difference]: Without dead ends: 448 [2021-11-13 01:33:50,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1131 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:33:50,173 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 3 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:50,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1709 Invalid, 12 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 42.78ms Time] [2021-11-13 01:33:50,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-13 01:33:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2021-11-13 01:33:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 259 states have (on average 1.166023166023166) internal successors, (302), 261 states have internal predecessors, (302), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (169), 157 states have call predecessors, (169), 157 states have call successors, (169) [2021-11-13 01:33:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 629 transitions. [2021-11-13 01:33:50,206 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 629 transitions. Word has length 296 [2021-11-13 01:33:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:50,208 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 629 transitions. [2021-11-13 01:33:50,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:33:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 629 transitions. [2021-11-13 01:33:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-13 01:33:50,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:50,211 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:33:50,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:50,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:50,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:50,638 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash -66059801, now seen corresponding path program 1 times [2021-11-13 01:33:50,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:50,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46268854] [2021-11-13 01:33:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:50,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:50,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:50,646 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:50,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:33:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:55,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:33:55,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:55,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:33:57,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:33:57,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:34:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-13 01:34:02,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:09,904 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 100 treesize of output 94 [2021-11-13 01:34:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 01:34:11,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:11,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46268854] [2021-11-13 01:34:11,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46268854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:11,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832855499] [2021-11-13 01:34:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:11,054 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:11,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:34:11,083 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:34:11,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-13 01:34:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:13,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:34:13,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:34:14,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-13 01:34:15,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832855499] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:15,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:34:15,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 20, 5] total 42 [2021-11-13 01:34:15,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196751629] [2021-11-13 01:34:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:15,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:15,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:15,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:34:15,522 INFO L87 Difference]: Start difference. First operand 447 states and 629 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-13 01:34:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:15,912 INFO L93 Difference]: Finished difference Result 836 states and 1203 transitions. [2021-11-13 01:34:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:34:15,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 296 [2021-11-13 01:34:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:15,920 INFO L225 Difference]: With dead ends: 836 [2021-11-13 01:34:15,920 INFO L226 Difference]: Without dead ends: 450 [2021-11-13 01:34:15,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1129 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:34:15,925 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 153 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 308.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 349.07ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:15,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1378 Invalid, 63 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 349.07ms Time] [2021-11-13 01:34:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-13 01:34:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-13 01:34:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 264 states have internal predecessors, (304), 158 states have call successors, (158), 28 states have call predecessors, (158), 30 states have return successors, (182), 157 states have call predecessors, (182), 157 states have call successors, (182) [2021-11-13 01:34:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 644 transitions. [2021-11-13 01:34:15,959 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 644 transitions. Word has length 296 [2021-11-13 01:34:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:15,959 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 644 transitions. [2021-11-13 01:34:15,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-13 01:34:15,960 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 644 transitions. [2021-11-13 01:34:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-13 01:34:15,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:15,963 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:34:15,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:16,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:16,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:16,373 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1344215342, now seen corresponding path program 1 times [2021-11-13 01:34:16,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:16,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126181957] [2021-11-13 01:34:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:16,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:16,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:16,381 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:16,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:34:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:21,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:34:21,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:21,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:34:23,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:34:23,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:34:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-13 01:34:28,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:35,620 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 100 treesize of output 94 [2021-11-13 01:34:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 01:34:36,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:36,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126181957] [2021-11-13 01:34:36,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126181957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:36,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122639653] [2021-11-13 01:34:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:36,500 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:34:36,502 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:34:36,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 01:34:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:38,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:34:38,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-13 01:34:40,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-13 01:34:41,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1122639653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:41,358 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:34:41,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22, 20] total 45 [2021-11-13 01:34:41,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628990082] [2021-11-13 01:34:41,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:41,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:34:41,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:34:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2021-11-13 01:34:41,363 INFO L87 Difference]: Start difference. First operand 450 states and 644 transitions. Second operand has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 8 states have internal predecessors, (121), 6 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2021-11-13 01:34:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:42,838 INFO L93 Difference]: Finished difference Result 833 states and 1205 transitions. [2021-11-13 01:34:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:34:42,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 8 states have internal predecessors, (121), 6 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) Word has length 302 [2021-11-13 01:34:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:42,845 INFO L225 Difference]: With dead ends: 833 [2021-11-13 01:34:42,845 INFO L226 Difference]: Without dead ends: 450 [2021-11-13 01:34:42,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1152 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=182, Invalid=2074, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 01:34:42,850 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 299 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 891.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.54ms SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1032.61ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:42,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2149 Invalid, 419 Unknown, 0 Unchecked, 7.54ms Time], IncrementalHoareTripleChecker [250 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 1032.61ms Time] [2021-11-13 01:34:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-13 01:34:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-13 01:34:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 264 states have internal predecessors, (304), 158 states have call successors, (158), 28 states have call predecessors, (158), 30 states have return successors, (172), 157 states have call predecessors, (172), 157 states have call successors, (172) [2021-11-13 01:34:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 634 transitions. [2021-11-13 01:34:42,885 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 634 transitions. Word has length 302 [2021-11-13 01:34:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:42,886 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 634 transitions. [2021-11-13 01:34:42,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 8 states have internal predecessors, (121), 6 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2021-11-13 01:34:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 634 transitions. [2021-11-13 01:34:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-13 01:34:42,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:42,890 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:34:42,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:43,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-13 01:34:43,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:43,314 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash 283100203, now seen corresponding path program 1 times [2021-11-13 01:34:43,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:43,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384041353] [2021-11-13 01:34:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:43,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:43,319 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:43,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 01:34:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:48,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2348 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:34:48,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:48,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:34:50,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:34:50,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:34:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-13 01:34:55,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:02,749 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 100 treesize of output 94 [2021-11-13 01:35:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 01:35:03,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384041353] [2021-11-13 01:35:03,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384041353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1228604179] [2021-11-13 01:35:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:03,663 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:35:03,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:35:03,668 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:35:03,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 01:35:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:05,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2348 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:35:05,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-11-13 01:35:07,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2021-11-13 01:35:08,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1228604179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:08,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:35:08,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [22, 20] total 43 [2021-11-13 01:35:08,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824865202] [2021-11-13 01:35:08,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:08,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:35:08,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:08,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:35:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2021-11-13 01:35:08,132 INFO L87 Difference]: Start difference. First operand 450 states and 634 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-13 01:35:10,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:12,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:14,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:16,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:18,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:20,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:21,402 INFO L93 Difference]: Finished difference Result 920 states and 1324 transitions. [2021-11-13 01:35:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:35:21,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 304 [2021-11-13 01:35:21,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:21,410 INFO L225 Difference]: With dead ends: 920 [2021-11-13 01:35:21,410 INFO L226 Difference]: Without dead ends: 540 [2021-11-13 01:35:21,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1160 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2021-11-13 01:35:21,414 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 243 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 194 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12858.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13088.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:21,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 2573 Invalid, 320 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [194 Valid, 120 Invalid, 6 Unknown, 0 Unchecked, 13088.22ms Time] [2021-11-13 01:35:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-13 01:35:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 450. [2021-11-13 01:35:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 264 states have internal predecessors, (304), 158 states have call successors, (158), 28 states have call predecessors, (158), 30 states have return successors, (168), 157 states have call predecessors, (168), 157 states have call successors, (168) [2021-11-13 01:35:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 630 transitions. [2021-11-13 01:35:21,447 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 630 transitions. Word has length 304 [2021-11-13 01:35:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:21,449 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 630 transitions. [2021-11-13 01:35:21,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-13 01:35:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 630 transitions. [2021-11-13 01:35:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-13 01:35:21,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:21,451 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:35:21,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:21,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:21,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:21,870 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:35:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2090771040, now seen corresponding path program 1 times [2021-11-13 01:35:21,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:21,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49494305] [2021-11-13 01:35:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:21,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:21,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:21,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 01:35:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:27,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:35:27,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:27,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:35:28,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:35:28,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:35:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 01:35:33,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:41,707 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 100 treesize of output 94 [2021-11-13 01:35:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-13 01:35:42,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:42,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49494305] [2021-11-13 01:35:42,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49494305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:42,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2088283321] [2021-11-13 01:35:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:42,686 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:35:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:35:42,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:35:42,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-13 01:35:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:48,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:35:48,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:49,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:35:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-13 01:35:53,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:55,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-13 01:35:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-13 01:35:56,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2088283321] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:35:56,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:35:56,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22, 20, 10] total 54 [2021-11-13 01:35:56,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996091523] [2021-11-13 01:35:56,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:56,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:35:56,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:35:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-13 01:35:56,737 INFO L87 Difference]: Start difference. First operand 450 states and 630 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-13 01:35:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:57,384 INFO L93 Difference]: Finished difference Result 859 states and 1212 transitions. [2021-11-13 01:35:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:35:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 310 [2021-11-13 01:35:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:57,391 INFO L225 Difference]: With dead ends: 859 [2021-11-13 01:35:57,391 INFO L226 Difference]: Without dead ends: 463 [2021-11-13 01:35:57,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1173 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=209, Invalid=2761, Unknown=0, NotChecked=0, Total=2970 [2021-11-13 01:35:57,401 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 37 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.14ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 341.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:57,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2772 Invalid, 125 Unknown, 0 Unchecked, 17.14ms Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 75 Unchecked, 341.22ms Time] [2021-11-13 01:35:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-13 01:35:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-11-13 01:35:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 273 states have (on average 1.1684981684981686) internal successors, (319), 276 states have internal predecessors, (319), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (169), 157 states have call predecessors, (169), 157 states have call successors, (169) [2021-11-13 01:35:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 646 transitions. [2021-11-13 01:35:57,444 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 646 transitions. Word has length 310 [2021-11-13 01:35:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:57,444 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 646 transitions. [2021-11-13 01:35:57,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-13 01:35:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 646 transitions. [2021-11-13 01:35:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-13 01:35:57,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:57,448 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:35:57,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:57,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-13 01:35:57,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:35:57,870 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:35:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:57,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2134548382, now seen corresponding path program 1 times [2021-11-13 01:35:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:57,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377658039] [2021-11-13 01:35:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:57,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:57,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:57,876 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:57,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 01:36:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:36:03,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:03,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:36:05,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:36:05,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:36:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 01:36:10,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:19,245 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 100 treesize of output 94 [2021-11-13 01:36:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-13 01:36:20,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:20,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377658039] [2021-11-13 01:36:20,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377658039] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:20,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221359801] [2021-11-13 01:36:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:20,192 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:20,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:36:20,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:36:20,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 01:36:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:22,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:36:22,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-13 01:36:23,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2021-11-13 01:36:24,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [221359801] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:36:24,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:36:24,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22, 20, 4] total 41 [2021-11-13 01:36:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504035574] [2021-11-13 01:36:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:24,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:36:24,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:36:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 01:36:24,482 INFO L87 Difference]: Start difference. First operand 463 states and 646 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:36:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:24,677 INFO L93 Difference]: Finished difference Result 862 states and 1238 transitions. [2021-11-13 01:36:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:36:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 310 [2021-11-13 01:36:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:24,684 INFO L225 Difference]: With dead ends: 862 [2021-11-13 01:36:24,684 INFO L226 Difference]: Without dead ends: 469 [2021-11-13 01:36:24,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1186 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:36:24,689 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 20 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:24,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1714 Invalid, 16 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 47.73ms Time] [2021-11-13 01:36:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-13 01:36:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2021-11-13 01:36:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 268 states have (on average 1.1679104477611941) internal successors, (313), 270 states have internal predecessors, (313), 158 states have call successors, (158), 29 states have call predecessors, (158), 30 states have return successors, (168), 157 states have call predecessors, (168), 157 states have call successors, (168) [2021-11-13 01:36:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 639 transitions. [2021-11-13 01:36:24,728 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 639 transitions. Word has length 310 [2021-11-13 01:36:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:24,729 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 639 transitions. [2021-11-13 01:36:24,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:36:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 639 transitions. [2021-11-13 01:36:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-13 01:36:24,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:24,733 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:36:24,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:25,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-13 01:36:25,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:25,151 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:36:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -165979994, now seen corresponding path program 1 times [2021-11-13 01:36:25,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:25,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100958912] [2021-11-13 01:36:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:25,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:25,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:25,158 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:25,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 01:36:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:30,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:36:30,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:30,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:36:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:36:32,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:36:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 01:36:38,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:45,850 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 100 treesize of output 94 [2021-11-13 01:36:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-13 01:36:46,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:46,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100958912] [2021-11-13 01:36:46,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100958912] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:36:46,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [260456583] [2021-11-13 01:36:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:46,844 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:36:46,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:36:46,845 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:36:46,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-13 01:36:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:48,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:36:48,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-13 01:36:51,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-11-13 01:36:52,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [260456583] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:36:52,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:36:52,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22, 20, 10] total 48 [2021-11-13 01:36:52,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300218213] [2021-11-13 01:36:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:52,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:36:52,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:36:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 01:36:52,851 INFO L87 Difference]: Start difference. First operand 457 states and 639 transitions. Second operand has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-13 01:36:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:54,591 INFO L93 Difference]: Finished difference Result 859 states and 1247 transitions. [2021-11-13 01:36:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:36:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 314 [2021-11-13 01:36:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:54,598 INFO L225 Difference]: With dead ends: 859 [2021-11-13 01:36:54,598 INFO L226 Difference]: Without dead ends: 467 [2021-11-13 01:36:54,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1258 GetRequests, 1195 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-13 01:36:54,604 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 19 mSDsluCounter, 4443 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 629.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5004 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.37ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 689.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:54,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5004 Invalid, 197 Unknown, 0 Unchecked, 13.37ms Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 689.70ms Time] [2021-11-13 01:36:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-13 01:36:54,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2021-11-13 01:36:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 274 states have (on average 1.1642335766423357) internal successors, (319), 277 states have internal predecessors, (319), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (182), 157 states have call predecessors, (182), 157 states have call successors, (182) [2021-11-13 01:36:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 659 transitions. [2021-11-13 01:36:54,646 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 659 transitions. Word has length 314 [2021-11-13 01:36:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:54,647 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 659 transitions. [2021-11-13 01:36:54,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-13 01:36:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 659 transitions. [2021-11-13 01:36:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-13 01:36:54,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:54,651 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:36:54,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:54,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:55,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:55,076 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:36:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2071134707, now seen corresponding path program 1 times [2021-11-13 01:36:55,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:55,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714413402] [2021-11-13 01:36:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:55,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:55,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:55,083 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:55,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 01:37:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:00,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:37:00,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:00,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:37:02,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:37:02,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:37:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 01:37:07,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:16,003 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 100 treesize of output 94 [2021-11-13 01:37:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-13 01:37:17,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:17,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714413402] [2021-11-13 01:37:17,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714413402] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:37:17,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059255783] [2021-11-13 01:37:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:17,125 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:17,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:37:17,131 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:37:17,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-13 01:37:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:19,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:37:19,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-13 01:37:22,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-13 01:37:25,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059255783] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:37:25,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:37:25,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 20, 5] total 44 [2021-11-13 01:37:25,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537161991] [2021-11-13 01:37:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:25,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:37:25,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:37:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2021-11-13 01:37:25,011 INFO L87 Difference]: Start difference. First operand 464 states and 659 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:37:27,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:29,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:32,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:34,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:36,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:38,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:40,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:42,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:44,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:46,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:48,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:49,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:51,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:52,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:55,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:57,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:57,713 INFO L93 Difference]: Finished difference Result 882 states and 1324 transitions. [2021-11-13 01:37:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:37:57,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 316 [2021-11-13 01:37:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:57,722 INFO L225 Difference]: With dead ends: 882 [2021-11-13 01:37:57,722 INFO L226 Difference]: Without dead ends: 482 [2021-11-13 01:37:57,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1206 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2021-11-13 01:37:57,726 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 34 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31373.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 31966.49ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:57,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 2209 Invalid, 140 Unknown, 0 Unchecked, 10.65ms Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 12 Unknown, 46 Unchecked, 31966.49ms Time] [2021-11-13 01:37:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-13 01:37:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 471. [2021-11-13 01:37:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 281 states have (on average 1.1637010676156583) internal successors, (327), 284 states have internal predecessors, (327), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (182), 157 states have call predecessors, (182), 157 states have call successors, (182) [2021-11-13 01:37:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 667 transitions. [2021-11-13 01:37:57,770 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 667 transitions. Word has length 316 [2021-11-13 01:37:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:57,771 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 667 transitions. [2021-11-13 01:37:57,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:37:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 667 transitions. [2021-11-13 01:37:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-13 01:37:57,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:57,775 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:37:57,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:58,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:58,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:37:58,190 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash -174155249, now seen corresponding path program 1 times [2021-11-13 01:37:58,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:58,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568870792] [2021-11-13 01:37:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:58,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:58,197 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:58,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 01:38:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:03,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:38:03,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:03,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:38:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:05,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:38:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 01:38:11,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:20,030 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 100 treesize of output 94 [2021-11-13 01:38:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-13 01:38:21,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:38:21,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568870792] [2021-11-13 01:38:21,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568870792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:21,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2055767999] [2021-11-13 01:38:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:21,190 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:38:21,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:38:21,191 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:38:21,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-13 01:38:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:23,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:38:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-13 01:38:24,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2021-11-13 01:38:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2055767999] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:38:25,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:38:25,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22, 20, 4] total 41 [2021-11-13 01:38:25,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949008833] [2021-11-13 01:38:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:25,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:38:25,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:38:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:38:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 01:38:25,021 INFO L87 Difference]: Start difference. First operand 471 states and 667 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:38:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:25,272 INFO L93 Difference]: Finished difference Result 885 states and 1299 transitions. [2021-11-13 01:38:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:38:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 316 [2021-11-13 01:38:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:25,279 INFO L225 Difference]: With dead ends: 885 [2021-11-13 01:38:25,280 INFO L226 Difference]: Without dead ends: 480 [2021-11-13 01:38:25,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1210 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:38:25,285 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 34 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.05ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:25,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1705 Invalid, 13 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 76.05ms Time] [2021-11-13 01:38:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-13 01:38:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 467. [2021-11-13 01:38:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 280 states have internal predecessors, (320), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (182), 157 states have call predecessors, (182), 157 states have call successors, (182) [2021-11-13 01:38:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 660 transitions. [2021-11-13 01:38:25,326 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 660 transitions. Word has length 316 [2021-11-13 01:38:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:25,326 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 660 transitions. [2021-11-13 01:38:25,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:38:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 660 transitions. [2021-11-13 01:38:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-13 01:38:25,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:25,330 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:38:25,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:25,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:25,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:38:25,750 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:38:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash 252399249, now seen corresponding path program 1 times [2021-11-13 01:38:25,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:38:25,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109612230] [2021-11-13 01:38:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:25,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:38:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:38:25,756 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:38:25,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 01:38:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:31,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:38:31,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:31,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:38:33,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:33,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:38:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-13 01:38:38,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:48,399 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 100 treesize of output 94 [2021-11-13 01:38:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-13 01:38:49,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:38:49,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109612230] [2021-11-13 01:38:49,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109612230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:49,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061529192] [2021-11-13 01:38:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:49,658 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:38:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:38:49,659 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:38:49,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-13 01:38:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:55,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 01:38:55,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:57,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:39:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-13 01:39:04,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:07,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-13 01:39:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-13 01:39:08,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061529192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:08,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:39:08,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [22, 20] total 56 [2021-11-13 01:39:08,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314645870] [2021-11-13 01:39:08,153 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:08,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 01:39:08,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:39:08,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 01:39:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2873, Unknown=0, NotChecked=0, Total=3080 [2021-11-13 01:39:08,157 INFO L87 Difference]: Start difference. First operand 467 states and 660 transitions. Second operand has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 19 states have internal predecessors, (192), 10 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 12 states have call predecessors, (60), 10 states have call successors, (60) [2021-11-13 01:39:10,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:12,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:14,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:16,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:18,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:20,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:29,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:31,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:33,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:35,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:37,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:39,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:43,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:45,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:47,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:49,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:51,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:53,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:55,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:57,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:59,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:01,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:03,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:05,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:07,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:09,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:11,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:13,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:15,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:17,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:19,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:21,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:23,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:25,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:27,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:29,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:31,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:33,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:35,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:37,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:39,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:41,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:44,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:46,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:48,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:50,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:52,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:40:54,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:11,798 INFO L93 Difference]: Finished difference Result 1326 states and 1985 transitions. [2021-11-13 01:41:11,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:41:11,800 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 19 states have internal predecessors, (192), 10 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 12 states have call predecessors, (60), 10 states have call successors, (60) Word has length 316 [2021-11-13 01:41:11,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:11,811 INFO L225 Difference]: With dead ends: 1326 [2021-11-13 01:41:11,812 INFO L226 Difference]: Without dead ends: 920 [2021-11-13 01:41:11,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1183 SyntacticMatches, 24 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=234, Invalid=3306, Unknown=0, NotChecked=0, Total=3540 [2021-11-13 01:41:11,818 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 267 mSDsluCounter, 9328 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 189 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118690.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 10368 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.56ms SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 1100 IncrementalHoareTripleChecker+Unchecked, 122149.11ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:11,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 10368 Invalid, 5089 Unknown, 0 Unchecked, 54.56ms Time], IncrementalHoareTripleChecker [189 Valid, 3753 Invalid, 47 Unknown, 1100 Unchecked, 122149.11ms Time] [2021-11-13 01:41:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-13 01:41:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 653. [2021-11-13 01:41:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 399 states have (on average 1.1929824561403508) internal successors, (476), 406 states have internal predecessors, (476), 213 states have call successors, (213), 36 states have call predecessors, (213), 40 states have return successors, (262), 210 states have call predecessors, (262), 212 states have call successors, (262) [2021-11-13 01:41:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 951 transitions. [2021-11-13 01:41:11,893 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 951 transitions. Word has length 316 [2021-11-13 01:41:11,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:11,894 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 951 transitions. [2021-11-13 01:41:11,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 19 states have internal predecessors, (192), 10 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 12 states have call predecessors, (60), 10 states have call successors, (60) [2021-11-13 01:41:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 951 transitions. [2021-11-13 01:41:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-13 01:41:11,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:11,899 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:41:11,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:12,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:12,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:12,314 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 740543245, now seen corresponding path program 1 times [2021-11-13 01:41:12,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:12,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703319961] [2021-11-13 01:41:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:12,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:12,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:12,321 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:12,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-13 01:41:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:18,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:41:18,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:18,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:41:20,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:41:20,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:41:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-13 01:41:26,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:34,589 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 100 treesize of output 94 [2021-11-13 01:41:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-11-13 01:41:35,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:35,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703319961] [2021-11-13 01:41:35,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703319961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:41:35,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [321022390] [2021-11-13 01:41:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:35,720 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:35,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:41:35,722 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:41:35,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-13 01:41:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:37,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:41:37,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-13 01:41:40,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2021-11-13 01:41:41,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [321022390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:41,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:41:41,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [22, 20] total 48 [2021-11-13 01:41:41,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704050983] [2021-11-13 01:41:41,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:41,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:41:41,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:41,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:41:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 01:41:41,867 INFO L87 Difference]: Start difference. First operand 653 states and 951 transitions. Second operand has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:41:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:43,540 INFO L93 Difference]: Finished difference Result 1152 states and 1710 transitions. [2021-11-13 01:41:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:41:43,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 320 [2021-11-13 01:41:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:43,550 INFO L225 Difference]: With dead ends: 1152 [2021-11-13 01:41:43,551 INFO L226 Difference]: Without dead ends: 644 [2021-11-13 01:41:43,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1221 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-13 01:41:43,558 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 21 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 547.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4433 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.98ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 603.56ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:43,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4433 Invalid, 167 Unknown, 0 Unchecked, 9.98ms Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 603.56ms Time] [2021-11-13 01:41:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-11-13 01:41:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 638. [2021-11-13 01:41:43,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 385 states have (on average 1.1896103896103896) internal successors, (458), 392 states have internal predecessors, (458), 213 states have call successors, (213), 35 states have call predecessors, (213), 39 states have return successors, (259), 210 states have call predecessors, (259), 212 states have call successors, (259) [2021-11-13 01:41:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 930 transitions. [2021-11-13 01:41:43,629 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 930 transitions. Word has length 320 [2021-11-13 01:41:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:43,630 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 930 transitions. [2021-11-13 01:41:43,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 01:41:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 930 transitions. [2021-11-13 01:41:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-13 01:41:43,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:43,635 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 01:41:43,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:43,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2021-11-13 01:41:44,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:44,051 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 324762242, now seen corresponding path program 1 times [2021-11-13 01:41:44,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:44,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769954712] [2021-11-13 01:41:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:44,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:44,058 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:44,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-13 01:41:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:49,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:41:49,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:50,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:41:51,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:41:51,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:41:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-13 01:41:57,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:06,148 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 100 treesize of output 94 [2021-11-13 01:42:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2021-11-13 01:42:07,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:07,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769954712] [2021-11-13 01:42:07,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769954712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:07,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375953807] [2021-11-13 01:42:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:07,356 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:07,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:42:07,357 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:42:07,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-13 01:42:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:13,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 01:42:13,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:14,917 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 19 treesize of output 1 [2021-11-13 01:42:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 340 proven. 6 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:42:28,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2021-11-13 01:42:39,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [375953807] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:42:39,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111442870] [2021-11-13 01:42:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:39,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:42:39,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:42:39,209 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:42:39,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fe3be4-ad91-4a8a-a1a1-be2df073f96d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-13 01:42:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:41,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 01:42:41,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:42,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:42:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:42:44,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-13 01:42:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 312 proven. 5 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-13 01:42:48,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:10,785 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 100 treesize of output 94 [2021-11-13 01:43:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-11-13 01:43:12,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111442870] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:12,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:43:12,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 13, 10, 17, 15] total 71 [2021-11-13 01:43:12,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141802746] [2021-11-13 01:43:12,830 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:43:12,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-13 01:43:12,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-13 01:43:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4698, Unknown=6, NotChecked=0, Total=4970 [2021-11-13 01:43:12,835 INFO L87 Difference]: Start difference. First operand 638 states and 930 transitions. Second operand has 71 states, 68 states have (on average 5.897058823529412) internal successors, (401), 60 states have internal predecessors, (401), 28 states have call successors, (131), 5 states have call predecessors, (131), 21 states have return successors, (135), 33 states have call predecessors, (135), 28 states have call successors, (135) [2021-11-13 01:43:15,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:17,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:19,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:21,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:23,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:25,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:27,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:29,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:31,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:33,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:35,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:37,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:39,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:41,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:43,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:45,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:47,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:49,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:44:11,380 WARN L227 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)