./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_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_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/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_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/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_e23ed138-8a45-4db6-b07b-efaf74b7649b/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 29d7fb95278c2cc136033d841944b6b6554a35073619295af30129693cec9c54 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:21:09,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:21:09,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:21:09,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:21:09,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:21:09,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:21:09,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:21:09,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:21:09,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:21:09,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:21:09,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:21:09,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:21:09,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:21:09,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:21:09,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:21:09,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:21:09,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:21:09,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:21:09,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:21:09,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:21:09,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:21:09,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:21:09,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:21:09,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:21:09,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:21:09,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:21:09,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:21:09,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:21:09,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:21:09,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:21:09,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:21:09,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:21:09,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:21:09,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:21:09,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:21:09,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:21:09,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:21:09,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:21:09,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:21:09,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:21:09,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:21:09,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:21:09,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:21:09,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:21:09,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:21:09,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:21:09,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:21:09,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:21:09,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:21:09,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:21:09,697 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:21:09,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:21:09,698 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:21:09,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:21:09,698 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:21:09,699 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:21:09,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:21:09,699 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:21:09,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:21:09,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:21:09,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:21:09,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:21:09,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:21:09,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:21:09,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:21:09,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:21:09,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:21:09,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:21:09,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:21:09,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:21:09,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:09,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:21:09,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:21:09,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:21:09,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:21:09,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:21:09,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:21:09,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:21:09,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:21:09,708 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d7fb95278c2cc136033d841944b6b6554a35073619295af30129693cec9c54 [2021-11-12 23:21:10,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:21:10,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:21:10,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:21:10,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:21:10,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:21:10,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i [2021-11-12 23:21:10,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/78cfb8240/bbfc039edda44789b930bb7a13292d42/FLAGa7d995ae4 [2021-11-12 23:21:11,310 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:21:11,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i [2021-11-12 23:21:11,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/78cfb8240/bbfc039edda44789b930bb7a13292d42/FLAGa7d995ae4 [2021-11-12 23:21:11,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/78cfb8240/bbfc039edda44789b930bb7a13292d42 [2021-11-12 23:21:11,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:21:11,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:21:11,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:11,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:21:11,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:21:11,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:11" (1/1) ... [2021-11-12 23:21:11,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f70981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:11, skipping insertion in model container [2021-11-12 23:21:11,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:11" (1/1) ... [2021-11-12 23:21:11,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:21:11,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:21:12,161 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4497,4510] [2021-11-12 23:21:12,168 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4557,4570] [2021-11-12 23:21:12,193 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:12,198 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:13,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:13,855 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:13,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:13,858 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:13,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:13,862 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:13,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:13,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:13,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:13,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:13,866 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:14,154 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:14,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:14,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:14,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:14,542 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:21:14,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36f0c874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:14, skipping insertion in model container [2021-11-12 23:21:14,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:14,546 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:21:14,549 INFO L158 Benchmark]: Toolchain (without parser) took 2854.00ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 56.9MB in the beginning and 64.2MB in the end (delta: -7.3MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-12 23:21:14,550 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:21:14,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2842.60ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 56.7MB in the beginning and 64.2MB in the end (delta: -7.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2021-11-12 23:21:14,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2842.60ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 56.7MB in the beginning and 64.2MB in the end (delta: -7.6MB). Peak memory consumption was 22.2MB. 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/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_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/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_e23ed138-8a45-4db6-b07b-efaf74b7649b/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 29d7fb95278c2cc136033d841944b6b6554a35073619295af30129693cec9c54 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:21:17,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:21:17,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:21:17,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:21:17,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:21:17,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:21:17,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:21:17,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:21:17,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:21:17,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:21:17,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:21:17,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:21:17,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:21:17,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:21:17,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:21:17,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:21:17,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:21:17,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:21:17,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:21:17,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:21:17,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:21:17,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:21:17,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:21:17,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:21:17,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:21:17,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:21:17,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:21:17,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:21:17,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:21:17,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:21:17,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:21:17,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:21:17,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:21:17,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:21:17,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:21:17,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:21:17,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:21:17,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:21:17,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:21:17,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:21:17,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:21:17,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:21:17,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:21:17,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:21:17,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:21:17,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:21:17,637 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:21:17,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:21:17,638 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:21:17,638 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:21:17,638 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:21:17,639 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:21:17,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:21:17,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:21:17,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:21:17,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:21:17,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:21:17,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:21:17,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:21:17,644 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:21:17,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:21:17,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:21:17,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:21:17,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:21:17,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:21:17,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:21:17,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:17,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:21:17,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:21:17,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:21:17,647 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:21:17,647 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:17,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:21:17,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:21:17,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:21:17,649 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d7fb95278c2cc136033d841944b6b6554a35073619295af30129693cec9c54 [2021-11-12 23:21:18,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:21:18,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:21:18,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:21:18,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:21:18,095 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:21:18,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i [2021-11-12 23:21:18,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/df4d34e30/5f73ac6baaf24c63a1d9d0d61a06e743/FLAGfd2267c09 [2021-11-12 23:21:19,140 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:21:19,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i [2021-11-12 23:21:19,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/df4d34e30/5f73ac6baaf24c63a1d9d0d61a06e743/FLAGfd2267c09 [2021-11-12 23:21:19,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/data/df4d34e30/5f73ac6baaf24c63a1d9d0d61a06e743 [2021-11-12 23:21:19,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:21:19,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:21:19,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:19,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:21:19,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:21:19,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:19" (1/1) ... [2021-11-12 23:21:19,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5804268d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:19, skipping insertion in model container [2021-11-12 23:21:19,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:19" (1/1) ... [2021-11-12 23:21:19,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:21:19,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:21:20,093 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4497,4510] [2021-11-12 23:21:20,102 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4557,4570] [2021-11-12 23:21:20,134 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:20,142 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:21,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,654 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:21,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:21,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:21,660 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:21,662 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:21,663 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:21,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:21,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:21,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:21,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:21,867 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:21,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:21,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:22,184 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:21:22,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:21:22,258 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4497,4510] [2021-11-12 23:21:22,259 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4557,4570] [2021-11-12 23:21:22,261 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:22,264 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:22,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,332 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,333 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,335 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,430 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:22,431 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:22,432 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:22,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:22,445 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:22,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:22,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:22,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:22,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:22,452 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:22,490 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:22,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:22,769 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:21:22,798 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4497,4510] [2021-11-12 23:21:22,799 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_e23ed138-8a45-4db6-b07b-efaf74b7649b/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i[4557,4570] [2021-11-12 23:21:22,801 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:21:22,802 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:21:22,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:22,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:21:22,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:21:22,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:21:22,909 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:21:22,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:21:22,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:21:22,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:21:22,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:21:22,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:21:22,913 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:21:22,943 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:21:23,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:23,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:21:23,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:23,476 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:21:23,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23 WrapperNode [2021-11-12 23:21:23,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:23,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:21:23,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:21:23,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:21:23,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:21:23,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:21:23,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:21:23,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:21:23,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:21:23,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:21:23,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:21:23,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:21:23,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (1/1) ... [2021-11-12 23:21:23,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:21:23,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:21:23,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:21:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:21:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:21:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2021-11-12 23:21:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2021-11-12 23:21:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:21:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:21:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:21:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:21:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:21:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2021-11-12 23:21:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2021-11-12 23:21:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:21:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:21:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:21:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:21:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:21:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:21:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2021-11-12 23:21:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2021-11-12 23:21:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:21:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:21:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:21:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:21:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:21:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2021-11-12 23:21:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2021-11-12 23:21:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:21:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:21:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2021-11-12 23:21:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2021-11-12 23:21:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:21:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:21:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:21:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:21:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2021-11-12 23:21:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2021-11-12 23:21:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2021-11-12 23:21:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2021-11-12 23:21:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:21:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:21:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2021-11-12 23:21:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2021-11-12 23:21:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2021-11-12 23:21:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2021-11-12 23:21:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:21:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:21:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2021-11-12 23:21:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2021-11-12 23:21:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2021-11-12 23:21:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2021-11-12 23:21:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2021-11-12 23:21:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2021-11-12 23:21:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2021-11-12 23:21:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2021-11-12 23:21:47,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:21:47,288 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:21:47,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:21:47 BoogieIcfgContainer [2021-11-12 23:21:47,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:21:47,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:21:47,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:21:47,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:21:47,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:21:19" (1/3) ... [2021-11-12 23:21:47,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26749037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:21:47, skipping insertion in model container [2021-11-12 23:21:47,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:23" (2/3) ... [2021-11-12 23:21:47,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26749037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:21:47, skipping insertion in model container [2021-11-12 23:21:47,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:21:47" (3/3) ... [2021-11-12 23:21:47,298 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_harness.i [2021-11-12 23:21:47,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:21:47,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:21:47,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:21:47,385 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:21:47,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:21:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 231 states have internal predecessors, (276), 142 states have call successors, (142), 20 states have call predecessors, (142), 20 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2021-11-12 23:21:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:21:47,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:47,421 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] [2021-11-12 23:21:47,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:47,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1929197217, now seen corresponding path program 1 times [2021-11-12 23:21:47,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:47,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962758458] [2021-11-12 23:21:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:47,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:47,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:47,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:47,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:21:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:51,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:21:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:21:52,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:21:52,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:52,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962758458] [2021-11-12 23:21:52,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962758458] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:52,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:52,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:21:52,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916156151] [2021-11-12 23:21:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:52,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:21:52,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:52,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:21:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:21:52,493 INFO L87 Difference]: Start difference. First operand has 393 states, 228 states have (on average 1.2105263157894737) internal successors, (276), 231 states have internal predecessors, (276), 142 states have call successors, (142), 20 states have call predecessors, (142), 20 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) 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) [2021-11-12 23:21:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:52,663 INFO L93 Difference]: Finished difference Result 780 states and 1224 transitions. [2021-11-12 23:21:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:21:52,665 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 [2021-11-12 23:21:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:52,683 INFO L225 Difference]: With dead ends: 780 [2021-11-12 23:21:52,683 INFO L226 Difference]: Without dead ends: 387 [2021-11-12 23:21:52,707 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 [2021-11-12 23:21:52,710 INFO L933 BasicCegarLoop]: 554 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, 554 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:52,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 9.54ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:21:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-12 23:21:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-11-12 23:21:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 223 states have (on average 1.1928251121076232) internal successors, (266), 226 states have internal predecessors, (266), 142 states have call successors, (142), 20 states have call predecessors, (142), 20 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2021-11-12 23:21:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 549 transitions. [2021-11-12 23:21:52,862 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 549 transitions. Word has length 52 [2021-11-12 23:21:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:52,863 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 549 transitions. [2021-11-12 23:21:52,864 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) [2021-11-12 23:21:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 549 transitions. [2021-11-12 23:21:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:21:52,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:52,867 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] [2021-11-12 23:21:52,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:53,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:53,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 983350755, now seen corresponding path program 1 times [2021-11-12 23:21:53,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:53,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032414723] [2021-11-12 23:21:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:53,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:53,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:53,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:53,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:21:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:57,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:21:57,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:21:58,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:21:58,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:58,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032414723] [2021-11-12 23:21:58,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032414723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:58,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:58,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 23:21:58,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394143462] [2021-11-12 23:21:58,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:58,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:21:58,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:58,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:21:58,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:21:58,405 INFO L87 Difference]: Start difference. First operand 387 states and 549 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) [2021-11-12 23:21:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:58,881 INFO L93 Difference]: Finished difference Result 769 states and 1142 transitions. [2021-11-12 23:21:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:21:58,882 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 [2021-11-12 23:21:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:58,891 INFO L225 Difference]: With dead ends: 769 [2021-11-12 23:21:58,892 INFO L226 Difference]: Without dead ends: 399 [2021-11-12 23:21:58,895 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 [2021-11-12 23:21:58,896 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 28 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.61ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:58,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 3219 Invalid, 70 Unknown, 0 Unchecked, 31.61ms Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 251.45ms Time] [2021-11-12 23:21:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-12 23:21:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2021-11-12 23:21:58,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 232 states have (on average 1.1982758620689655) internal successors, (278), 235 states have internal predecessors, (278), 143 states have call successors, (143), 22 states have call predecessors, (143), 22 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2021-11-12 23:21:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 563 transitions. [2021-11-12 23:21:58,966 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 563 transitions. Word has length 52 [2021-11-12 23:21:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:58,967 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 563 transitions. [2021-11-12 23:21:58,967 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) [2021-11-12 23:21:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 563 transitions. [2021-11-12 23:21:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 23:21:58,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:58,974 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] [2021-11-12 23:21:59,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:59,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:59,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash 221704994, now seen corresponding path program 1 times [2021-11-12 23:21:59,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:59,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313333790] [2021-11-12 23:21:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:59,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:59,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:59,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:59,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:22:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:04,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:22:04,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 23:22:04,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 23:22:05,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:05,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313333790] [2021-11-12 23:22:05,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313333790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:05,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:05,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:22:05,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832740669] [2021-11-12 23:22:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:05,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:22:05,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:22:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:22:05,473 INFO L87 Difference]: Start difference. First operand 399 states and 563 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) [2021-11-12 23:22:06,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:06,011 INFO L93 Difference]: Finished difference Result 795 states and 1127 transitions. [2021-11-12 23:22:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:22:06,013 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 [2021-11-12 23:22:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:06,020 INFO L225 Difference]: With dead ends: 795 [2021-11-12 23:22:06,020 INFO L226 Difference]: Without dead ends: 408 [2021-11-12 23:22:06,024 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 [2021-11-12 23:22:06,028 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 8 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 348.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.72ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 383.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:06,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2657 Invalid, 91 Unknown, 0 Unchecked, 12.72ms Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 383.93ms Time] [2021-11-12 23:22:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-12 23:22:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2021-11-12 23:22:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 238 states have (on average 1.1890756302521008) internal successors, (283), 241 states have internal predecessors, (283), 144 states have call successors, (144), 24 states have call predecessors, (144), 24 states have return successors, (144), 143 states have call predecessors, (144), 143 states have call successors, (144) [2021-11-12 23:22:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 571 transitions. [2021-11-12 23:22:06,075 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 571 transitions. Word has length 85 [2021-11-12 23:22:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:06,078 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 571 transitions. [2021-11-12 23:22:06,078 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) [2021-11-12 23:22:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 571 transitions. [2021-11-12 23:22:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:22:06,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:06,088 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] [2021-11-12 23:22:06,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:06,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:06,315 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1246678750, now seen corresponding path program 1 times [2021-11-12 23:22:06,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:06,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186220359] [2021-11-12 23:22:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:06,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:06,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:06,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:22:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:22:10,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-12 23:22:11,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 23:22:12,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:12,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186220359] [2021-11-12 23:22:12,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186220359] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:12,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:12,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-12 23:22:12,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915331851] [2021-11-12 23:22:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:12,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:22:12,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:22:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:22:12,607 INFO L87 Difference]: Start difference. First operand 408 states and 571 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) [2021-11-12 23:22:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:13,282 INFO L93 Difference]: Finished difference Result 809 states and 1132 transitions. [2021-11-12 23:22:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:22:13,283 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 [2021-11-12 23:22:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:13,287 INFO L225 Difference]: With dead ends: 809 [2021-11-12 23:22:13,287 INFO L226 Difference]: Without dead ends: 410 [2021-11-12 23:22:13,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:22:13,292 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 321.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.69ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 359.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:13,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3177 Invalid, 122 Unknown, 0 Unchecked, 11.69ms Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 359.17ms Time] [2021-11-12 23:22:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-12 23:22:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-12 23:22:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 243 states have internal predecessors, (283), 144 states have call successors, (144), 24 states have call predecessors, (144), 25 states have return successors, (145), 143 states have call predecessors, (145), 143 states have call successors, (145) [2021-11-12 23:22:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 572 transitions. [2021-11-12 23:22:13,358 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 572 transitions. Word has length 87 [2021-11-12 23:22:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:13,359 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 572 transitions. [2021-11-12 23:22:13,359 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) [2021-11-12 23:22:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 572 transitions. [2021-11-12 23:22:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:22:13,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:13,362 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] [2021-11-12 23:22:13,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:13,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:13,583 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:13,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2015323810, now seen corresponding path program 1 times [2021-11-12 23:22:13,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:13,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259998702] [2021-11-12 23:22:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:13,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:13,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:13,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:13,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:22:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:17,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:22:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 23:22:18,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 23:22:20,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:20,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259998702] [2021-11-12 23:22:20,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259998702] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:20,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:20,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-12 23:22:20,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375844322] [2021-11-12 23:22:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:20,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:22:20,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:22:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:22:20,245 INFO L87 Difference]: Start difference. First operand 410 states and 572 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) [2021-11-12 23:22:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:21,292 INFO L93 Difference]: Finished difference Result 814 states and 1139 transitions. [2021-11-12 23:22:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:22:21,293 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 [2021-11-12 23:22:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:21,297 INFO L225 Difference]: With dead ends: 814 [2021-11-12 23:22:21,298 INFO L226 Difference]: Without dead ends: 416 [2021-11-12 23:22:21,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:22:21,301 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 13 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 425.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.64ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:21,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 3695 Invalid, 176 Unknown, 0 Unchecked, 11.64ms Time], IncrementalHoareTripleChecker [16 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 465.60ms Time] [2021-11-12 23:22:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-12 23:22:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 414. [2021-11-12 23:22:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 243 states have (on average 1.1851851851851851) internal successors, (288), 246 states have internal predecessors, (288), 144 states have call successors, (144), 25 states have call predecessors, (144), 25 states have return successors, (145), 143 states have call predecessors, (145), 143 states have call successors, (145) [2021-11-12 23:22:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 577 transitions. [2021-11-12 23:22:21,324 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 577 transitions. Word has length 89 [2021-11-12 23:22:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:21,326 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 577 transitions. [2021-11-12 23:22:21,327 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) [2021-11-12 23:22:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 577 transitions. [2021-11-12 23:22:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-12 23:22:21,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:21,334 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] [2021-11-12 23:22:21,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:22:21,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:21,547 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1666741206, now seen corresponding path program 1 times [2021-11-12 23:22:21,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:21,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413907918] [2021-11-12 23:22:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:21,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:21,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:21,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:21,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:22:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:22:25,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 23:22:26,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 23:22:29,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:29,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413907918] [2021-11-12 23:22:29,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413907918] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:29,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:29,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-11-12 23:22:29,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456517901] [2021-11-12 23:22:29,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:29,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:22:29,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:29,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:22:29,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:22:29,163 INFO L87 Difference]: Start difference. First operand 414 states and 577 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) [2021-11-12 23:22:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:30,671 INFO L93 Difference]: Finished difference Result 820 states and 1142 transitions. [2021-11-12 23:22:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:22:30,674 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 [2021-11-12 23:22:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:30,678 INFO L225 Difference]: With dead ends: 820 [2021-11-12 23:22:30,679 INFO L226 Difference]: Without dead ends: 418 [2021-11-12 23:22:30,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:22:30,682 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 17 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 479.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.76ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 514.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:30,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 4213 Invalid, 209 Unknown, 0 Unchecked, 10.76ms Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 514.93ms Time] [2021-11-12 23:22:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-12 23:22:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 414. [2021-11-12 23:22:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 243 states have (on average 1.1810699588477367) internal successors, (287), 246 states have internal predecessors, (287), 144 states have call successors, (144), 25 states have call predecessors, (144), 25 states have return successors, (145), 143 states have call predecessors, (145), 143 states have call successors, (145) [2021-11-12 23:22:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 576 transitions. [2021-11-12 23:22:30,705 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 576 transitions. Word has length 91 [2021-11-12 23:22:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:30,706 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 576 transitions. [2021-11-12 23:22:30,706 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) [2021-11-12 23:22:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 576 transitions. [2021-11-12 23:22:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-12 23:22:30,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:30,708 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] [2021-11-12 23:22:30,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:30,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:30,923 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1220674526, now seen corresponding path program 1 times [2021-11-12 23:22:30,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:30,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013568616] [2021-11-12 23:22:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:30,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:30,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:30,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:30,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:22:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:34,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:22:34,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-12 23:22:35,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-12 23:22:35,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:35,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013568616] [2021-11-12 23:22:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013568616] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:35,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:35,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 23:22:35,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348573912] [2021-11-12 23:22:35,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:35,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:22:35,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:35,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:22:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:22:35,486 INFO L87 Difference]: Start difference. First operand 414 states and 576 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) [2021-11-12 23:22:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:35,728 INFO L93 Difference]: Finished difference Result 434 states and 599 transitions. [2021-11-12 23:22:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:22:35,729 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 [2021-11-12 23:22:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:35,734 INFO L225 Difference]: With dead ends: 434 [2021-11-12 23:22:35,734 INFO L226 Difference]: Without dead ends: 431 [2021-11-12 23:22:35,735 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 [2021-11-12 23:22:35,736 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 26 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:35,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3243 Invalid, 70 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 144.28ms Time] [2021-11-12 23:22:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-12 23:22:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 427. [2021-11-12 23:22:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 253 states have (on average 1.1897233201581028) internal successors, (301), 256 states have internal predecessors, (301), 145 states have call successors, (145), 27 states have call predecessors, (145), 27 states have return successors, (146), 144 states have call predecessors, (146), 144 states have call successors, (146) [2021-11-12 23:22:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 592 transitions. [2021-11-12 23:22:35,764 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 592 transitions. Word has length 93 [2021-11-12 23:22:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:35,765 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 592 transitions. [2021-11-12 23:22:35,765 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) [2021-11-12 23:22:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 592 transitions. [2021-11-12 23:22:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-12 23:22:35,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:35,771 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:22:35,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:35,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:35,995 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash 597781200, now seen corresponding path program 1 times [2021-11-12 23:22:36,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:36,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234802871] [2021-11-12 23:22:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:36,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:36,002 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:36,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:22:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:40,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:22:40,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-12 23:22:41,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 34 proven. 45 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-12 23:22:43,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:43,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234802871] [2021-11-12 23:22:43,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234802871] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:43,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:43,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:22:43,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545027213] [2021-11-12 23:22:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:43,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:22:43,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:22:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:22:43,242 INFO L87 Difference]: Start difference. First operand 427 states and 592 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 23:22:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:43,654 INFO L93 Difference]: Finished difference Result 827 states and 1192 transitions. [2021-11-12 23:22:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:22:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 258 [2021-11-12 23:22:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:43,660 INFO L225 Difference]: With dead ends: 827 [2021-11-12 23:22:43,660 INFO L226 Difference]: Without dead ends: 434 [2021-11-12 23:22:43,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:22:43,664 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 8 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.80ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:43,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2686 Invalid, 70 Unknown, 0 Unchecked, 6.80ms Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 267.21ms Time] [2021-11-12 23:22:43,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-12 23:22:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2021-11-12 23:22:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 256 states have (on average 1.18359375) internal successors, (303), 259 states have internal predecessors, (303), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (146), 145 states have call predecessors, (146), 145 states have call successors, (146) [2021-11-12 23:22:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 595 transitions. [2021-11-12 23:22:43,687 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 595 transitions. Word has length 258 [2021-11-12 23:22:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 595 transitions. [2021-11-12 23:22:43,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 23:22:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 595 transitions. [2021-11-12 23:22:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-12 23:22:43,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:43,694 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:22:43,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:43,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:43,907 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 896350588, now seen corresponding path program 1 times [2021-11-12 23:22:43,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:43,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353016674] [2021-11-12 23:22:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:43,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:43,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:43,912 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:43,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:22:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:48,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:22:48,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-12 23:22:49,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 40 proven. 48 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-12 23:22:51,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:51,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353016674] [2021-11-12 23:22:51,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353016674] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:51,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:51,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-12 23:22:51,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906062920] [2021-11-12 23:22:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:51,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:22:51,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:22:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:22:51,925 INFO L87 Difference]: Start difference. First operand 432 states and 595 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 23:22:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:52,489 INFO L93 Difference]: Finished difference Result 826 states and 1182 transitions. [2021-11-12 23:22:52,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:22:52,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 262 [2021-11-12 23:22:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:52,494 INFO L225 Difference]: With dead ends: 826 [2021-11-12 23:22:52,494 INFO L226 Difference]: Without dead ends: 428 [2021-11-12 23:22:52,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:22:52,498 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 12 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.09ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:52,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3197 Invalid, 105 Unknown, 0 Unchecked, 7.09ms Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 259.17ms Time] [2021-11-12 23:22:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-12 23:22:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-11-12 23:22:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 251 states have (on average 1.1673306772908367) internal successors, (293), 253 states have internal predecessors, (293), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2021-11-12 23:22:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 584 transitions. [2021-11-12 23:22:52,519 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 584 transitions. Word has length 262 [2021-11-12 23:22:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:52,519 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 584 transitions. [2021-11-12 23:22:52,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-12 23:22:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 584 transitions. [2021-11-12 23:22:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-12 23:22:52,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:52,525 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:22:52,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:52,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:52,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1902071025, now seen corresponding path program 1 times [2021-11-12 23:22:52,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:52,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179217297] [2021-11-12 23:22:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:52,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:52,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:52,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:22:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:57,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:22:57,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-12 23:22:58,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-11-12 23:23:02,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:02,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179217297] [2021-11-12 23:23:02,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179217297] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:02,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:02,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-12 23:23:02,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221238559] [2021-11-12 23:23:02,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:02,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:23:02,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:23:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:23:02,072 INFO L87 Difference]: Start difference. First operand 426 states and 584 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 8 states have internal predecessors, (97), 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) [2021-11-12 23:23:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:03,229 INFO L93 Difference]: Finished difference Result 820 states and 1166 transitions. [2021-11-12 23:23:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:23:03,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 8 states have internal predecessors, (97), 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 277 [2021-11-12 23:23:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:03,237 INFO L225 Difference]: With dead ends: 820 [2021-11-12 23:23:03,237 INFO L226 Difference]: Without dead ends: 428 [2021-11-12 23:23:03,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:23:03,242 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 17 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.42ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:03,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 3719 Invalid, 131 Unknown, 0 Unchecked, 8.42ms Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 389.45ms Time] [2021-11-12 23:23:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-12 23:23:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-11-12 23:23:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 251 states have (on average 1.1633466135458168) internal successors, (292), 253 states have internal predecessors, (292), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2021-11-12 23:23:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 583 transitions. [2021-11-12 23:23:03,269 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 583 transitions. Word has length 277 [2021-11-12 23:23:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:03,270 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 583 transitions. [2021-11-12 23:23:03,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 8 states have internal predecessors, (97), 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) [2021-11-12 23:23:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 583 transitions. [2021-11-12 23:23:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-12 23:23:03,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:03,276 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:23:03,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:03,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:03,490 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:03,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1392197587, now seen corresponding path program 1 times [2021-11-12 23:23:03,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:03,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304903842] [2021-11-12 23:23:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:03,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:03,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:03,496 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:03,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:23:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:08,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:23:08,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-11-12 23:23:09,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 12 proven. 62 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-11-12 23:23:14,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:14,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304903842] [2021-11-12 23:23:14,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304903842] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:14,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:14,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-11-12 23:23:14,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204980038] [2021-11-12 23:23:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:14,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:23:14,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:23:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:23:14,046 INFO L87 Difference]: Start difference. First operand 426 states and 583 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 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) [2021-11-12 23:23:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:15,346 INFO L93 Difference]: Finished difference Result 820 states and 1164 transitions. [2021-11-12 23:23:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:23:15,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 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 281 [2021-11-12 23:23:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:15,352 INFO L225 Difference]: With dead ends: 820 [2021-11-12 23:23:15,352 INFO L226 Difference]: Without dead ends: 428 [2021-11-12 23:23:15,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:23:15,356 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 21 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 366.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.51ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 411.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:15,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4241 Invalid, 162 Unknown, 0 Unchecked, 8.51ms Time], IncrementalHoareTripleChecker [19 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 411.14ms Time] [2021-11-12 23:23:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-12 23:23:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-11-12 23:23:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 251 states have (on average 1.159362549800797) internal successors, (291), 253 states have internal predecessors, (291), 146 states have call successors, (146), 28 states have call predecessors, (146), 28 states have return successors, (145), 145 states have call predecessors, (145), 145 states have call successors, (145) [2021-11-12 23:23:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 582 transitions. [2021-11-12 23:23:15,383 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 582 transitions. Word has length 281 [2021-11-12 23:23:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:15,384 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 582 transitions. [2021-11-12 23:23:15,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 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) [2021-11-12 23:23:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 582 transitions. [2021-11-12 23:23:15,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-12 23:23:15,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:15,391 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:23:15,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:15,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:15,615 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 396689183, now seen corresponding path program 1 times [2021-11-12 23:23:15,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:15,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434685641] [2021-11-12 23:23:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:15,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:15,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:15,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:23:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:20,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:23:20,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-12 23:23:21,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-12 23:23:22,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:22,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434685641] [2021-11-12 23:23:22,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434685641] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:22,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:22,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-12 23:23:22,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523582083] [2021-11-12 23:23:22,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:22,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:23:22,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:22,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:23:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:23:22,698 INFO L87 Difference]: Start difference. First operand 426 states and 582 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-12 23:23:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:23,150 INFO L93 Difference]: Finished difference Result 818 states and 1134 transitions. [2021-11-12 23:23:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:23:23,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 285 [2021-11-12 23:23:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:23,169 INFO L225 Difference]: With dead ends: 818 [2021-11-12 23:23:23,169 INFO L226 Difference]: Without dead ends: 431 [2021-11-12 23:23:23,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:23:23,173 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 157 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 366.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:23,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 1786 Invalid, 102 Unknown, 0 Unchecked, 6.93ms Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 366.25ms Time] [2021-11-12 23:23:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-12 23:23:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-12 23:23:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 255 states have (on average 1.1607843137254903) internal successors, (296), 258 states have internal predecessors, (296), 146 states have call successors, (146), 28 states have call predecessors, (146), 29 states have return successors, (154), 145 states have call predecessors, (154), 145 states have call successors, (154) [2021-11-12 23:23:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 596 transitions. [2021-11-12 23:23:23,204 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 596 transitions. Word has length 285 [2021-11-12 23:23:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:23,205 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 596 transitions. [2021-11-12 23:23:23,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2021-11-12 23:23:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 596 transitions. [2021-11-12 23:23:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-12 23:23:23,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:23,209 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:23:23,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:23,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:23,435 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash -742200134, now seen corresponding path program 1 times [2021-11-12 23:23:23,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:23,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621331122] [2021-11-12 23:23:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:23,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:23,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:23,442 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:23,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:23:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:28,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:23:28,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:29,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:23:31,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:31,016 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 [2021-11-12 23:23:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 286 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 23:23:36,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:43,999 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 [2021-11-12 23:23:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:23:45,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:45,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621331122] [2021-11-12 23:23:45,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621331122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:23:45,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1261786327] [2021-11-12 23:23:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:45,168 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:23:45,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:23:45,173 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:23:45,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:23:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:23:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-12 23:23:48,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-11-12 23:23:48,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1261786327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:23:48,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:23:48,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [22, 20] total 41 [2021-11-12 23:23:48,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796563431] [2021-11-12 23:23:48,933 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:23:48,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:23:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2021-11-12 23:23:48,937 INFO L87 Difference]: Start difference. First operand 431 states and 596 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:23:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:49,174 INFO L93 Difference]: Finished difference Result 799 states and 1124 transitions. [2021-11-12 23:23:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:23:49,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 287 [2021-11-12 23:23:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:49,187 INFO L225 Difference]: With dead ends: 799 [2021-11-12 23:23:49,187 INFO L226 Difference]: Without dead ends: 432 [2021-11-12 23:23:49,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1095 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 23:23:49,192 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 3 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:49,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1616 Invalid, 12 Unknown, 0 Unchecked, 3.56ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 44.98ms Time] [2021-11-12 23:23:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-12 23:23:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 431. [2021-11-12 23:23:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 255 states have (on average 1.1568627450980393) internal successors, (295), 258 states have internal predecessors, (295), 146 states have call successors, (146), 28 states have call predecessors, (146), 29 states have return successors, (154), 145 states have call predecessors, (154), 145 states have call successors, (154) [2021-11-12 23:23:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 595 transitions. [2021-11-12 23:23:49,223 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 595 transitions. Word has length 287 [2021-11-12 23:23:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:49,225 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 595 transitions. [2021-11-12 23:23:49,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:23:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 595 transitions. [2021-11-12 23:23:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-12 23:23:49,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:49,231 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:23:49,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:49,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:49,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:49,642 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1095288516, now seen corresponding path program 1 times [2021-11-12 23:23:49,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:49,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060407514] [2021-11-12 23:23:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:49,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:49,649 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:49,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:23:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:54,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:23:54,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:54,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:23:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:23:56,582 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 [2021-11-12 23:24:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 286 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 23:24:01,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:08,285 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 [2021-11-12 23:24:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:24:09,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:09,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060407514] [2021-11-12 23:24:09,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060407514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:24:09,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [116841372] [2021-11-12 23:24:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:09,034 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:24:09,035 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:24:09,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:24:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:10,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:24:10,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-12 23:24:11,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:24:12,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [116841372] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:12,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:24:12,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 20, 5] total 42 [2021-11-12 23:24:12,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636550575] [2021-11-12 23:24:12,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:12,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:12,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 23:24:12,315 INFO L87 Difference]: Start difference. First operand 431 states and 595 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-12 23:24:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:12,516 INFO L93 Difference]: Finished difference Result 804 states and 1132 transitions. [2021-11-12 23:24:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:12,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 287 [2021-11-12 23:24:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:12,523 INFO L225 Difference]: With dead ends: 804 [2021-11-12 23:24:12,523 INFO L226 Difference]: Without dead ends: 434 [2021-11-12 23:24:12,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1093 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 23:24:12,526 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 146 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:12,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1311 Invalid, 56 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 179.46ms Time] [2021-11-12 23:24:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-12 23:24:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-11-12 23:24:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 257 states have (on average 1.1556420233463034) internal successors, (297), 261 states have internal predecessors, (297), 146 states have call successors, (146), 28 states have call predecessors, (146), 30 states have return successors, (164), 145 states have call predecessors, (164), 145 states have call successors, (164) [2021-11-12 23:24:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 607 transitions. [2021-11-12 23:24:12,552 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 607 transitions. Word has length 287 [2021-11-12 23:24:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:12,553 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 607 transitions. [2021-11-12 23:24:12,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-12 23:24:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 607 transitions. [2021-11-12 23:24:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-12 23:24:12,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:12,556 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:24:12,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:12,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:12,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:12,964 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash -458568591, now seen corresponding path program 1 times [2021-11-12 23:24:12,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:12,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833115041] [2021-11-12 23:24:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:12,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:12,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:12,968 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:12,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:24:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:17,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:24:17,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:17,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:24:18,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:18,495 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 [2021-11-12 23:24:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 286 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 23:24:22,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:28,334 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 [2021-11-12 23:24:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:24:29,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:29,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833115041] [2021-11-12 23:24:29,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833115041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:24:29,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1660477975] [2021-11-12 23:24:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:29,148 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:29,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:24:29,149 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:24:29,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:24:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:24:30,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-12 23:24:32,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-12 23:24:33,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1660477975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:33,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:24:33,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22, 20] total 45 [2021-11-12 23:24:33,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254197130] [2021-11-12 23:24:33,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:33,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:24:33,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:24:33,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2021-11-12 23:24:33,345 INFO L87 Difference]: Start difference. First operand 434 states and 607 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 8 states have internal predecessors, (122), 6 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 5 states have call predecessors, (43), 6 states have call successors, (43) [2021-11-12 23:24:34,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:34,995 INFO L93 Difference]: Finished difference Result 804 states and 1136 transitions. [2021-11-12 23:24:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:24:34,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 8 states have internal predecessors, (122), 6 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 5 states have call predecessors, (43), 6 states have call successors, (43) Word has length 293 [2021-11-12 23:24:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:35,001 INFO L225 Difference]: With dead ends: 804 [2021-11-12 23:24:35,001 INFO L226 Difference]: Without dead ends: 434 [2021-11-12 23:24:35,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1116 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=182, Invalid=2074, Unknown=0, NotChecked=0, Total=2256 [2021-11-12 23:24:35,005 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 271 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1035.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1211.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:35,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 3030 Invalid, 454 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [226 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1211.90ms Time] [2021-11-12 23:24:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-12 23:24:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-11-12 23:24:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 257 states have (on average 1.1556420233463034) internal successors, (297), 261 states have internal predecessors, (297), 146 states have call successors, (146), 28 states have call predecessors, (146), 30 states have return successors, (157), 145 states have call predecessors, (157), 145 states have call successors, (157) [2021-11-12 23:24:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2021-11-12 23:24:35,035 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 293 [2021-11-12 23:24:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:35,036 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2021-11-12 23:24:35,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 8 states have internal predecessors, (122), 6 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 5 states have call predecessors, (43), 6 states have call successors, (43) [2021-11-12 23:24:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2021-11-12 23:24:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-12 23:24:35,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:35,039 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:24:35,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:35,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-12 23:24:35,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:35,456 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:35,456 INFO L85 PathProgramCache]: Analyzing trace with hash -895725750, now seen corresponding path program 1 times [2021-11-12 23:24:35,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:35,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475521333] [2021-11-12 23:24:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:35,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:35,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:35,462 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:35,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:24:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:40,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:24:40,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:40,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:24:41,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:24:41,670 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 [2021-11-12 23:24:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 23:24:46,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:54,173 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 [2021-11-12 23:24:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-12 23:24:55,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:55,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475521333] [2021-11-12 23:24:55,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475521333] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:24:55,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [855509178] [2021-11-12 23:24:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:55,057 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:55,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:24:55,058 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:24:55,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-12 23:24:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:57,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:24:57,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-12 23:24:58,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-11-12 23:24:59,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [855509178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:59,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:24:59,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [22, 20] total 43 [2021-11-12 23:24:59,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989614867] [2021-11-12 23:24:59,651 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:59,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:24:59,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:24:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2021-11-12 23:24:59,653 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 23:25:01,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:04,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:06,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:08,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:10,478 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 [] [2021-11-12 23:25:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:10,818 INFO L93 Difference]: Finished difference Result 915 states and 1297 transitions. [2021-11-12 23:25:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:25:10,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 295 [2021-11-12 23:25:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:10,824 INFO L225 Difference]: With dead ends: 915 [2021-11-12 23:25:10,824 INFO L226 Difference]: Without dead ends: 548 [2021-11-12 23:25:10,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 1124 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2021-11-12 23:25:10,828 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 249 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 197 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10785.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10985.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:10,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 2530 Invalid, 300 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [197 Valid, 99 Invalid, 4 Unknown, 0 Unchecked, 10985.04ms Time] [2021-11-12 23:25:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-12 23:25:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 434. [2021-11-12 23:25:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 257 states have (on average 1.1556420233463034) internal successors, (297), 261 states have internal predecessors, (297), 146 states have call successors, (146), 28 states have call predecessors, (146), 30 states have return successors, (153), 145 states have call predecessors, (153), 145 states have call successors, (153) [2021-11-12 23:25:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 596 transitions. [2021-11-12 23:25:10,866 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 596 transitions. Word has length 295 [2021-11-12 23:25:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:10,867 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 596 transitions. [2021-11-12 23:25:10,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 23:25:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 596 transitions. [2021-11-12 23:25:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-12 23:25:10,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:10,870 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:25:10,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:11,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-12 23:25:11,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:11,285 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 332232255, now seen corresponding path program 1 times [2021-11-12 23:25:11,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:11,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718645375] [2021-11-12 23:25:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:11,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:11,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:11,291 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:11,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:25:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:25:15,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:15,917 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 18 treesize of output 14 [2021-11-12 23:25:17,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:25:17,431 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 [2021-11-12 23:25:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 23:25:22,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:28,692 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 [2021-11-12 23:25:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:25:29,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:29,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718645375] [2021-11-12 23:25:29,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718645375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:29,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1817414907] [2021-11-12 23:25:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:29,594 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:29,595 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:29,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:25:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:34,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:25:34,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:35,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:25:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-12 23:25:37,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:39,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 23:25:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:25:40,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1817414907] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:40,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:25:40,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22, 20, 10] total 54 [2021-11-12 23:25:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123929240] [2021-11-12 23:25:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:40,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:25:40,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:25:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 23:25:40,314 INFO L87 Difference]: Start difference. First operand 434 states and 596 transitions. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 10 states have internal predecessors, (130), 5 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-12 23:25:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:40,873 INFO L93 Difference]: Finished difference Result 827 states and 1144 transitions. [2021-11-12 23:25:40,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:25:40,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 10 states have internal predecessors, (130), 5 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) Word has length 301 [2021-11-12 23:25:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:40,881 INFO L225 Difference]: With dead ends: 827 [2021-11-12 23:25:40,882 INFO L226 Difference]: Without dead ends: 447 [2021-11-12 23:25:40,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1137 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=209, Invalid=2761, Unknown=0, NotChecked=0, Total=2970 [2021-11-12 23:25:40,889 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 34 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.71ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 305.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:40,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3066 Invalid, 196 Unknown, 0 Unchecked, 8.71ms Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 144 Unchecked, 305.26ms Time] [2021-11-12 23:25:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-12 23:25:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-12 23:25:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 269 states have (on average 1.1598513011152416) internal successors, (312), 273 states have internal predecessors, (312), 146 states have call successors, (146), 29 states have call predecessors, (146), 31 states have return successors, (154), 145 states have call predecessors, (154), 145 states have call successors, (154) [2021-11-12 23:25:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 612 transitions. [2021-11-12 23:25:40,917 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 612 transitions. Word has length 301 [2021-11-12 23:25:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:40,917 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 612 transitions. [2021-11-12 23:25:40,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 10 states have internal predecessors, (130), 5 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-12 23:25:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 612 transitions. [2021-11-12 23:25:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-12 23:25:40,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:40,920 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:25:40,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-12 23:25:41,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:41,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:41,338 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash -252539395, now seen corresponding path program 1 times [2021-11-12 23:25:41,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:41,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587421120] [2021-11-12 23:25:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:41,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:41,343 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:41,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:25:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:45,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2340 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:25:45,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:45,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:25:47,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:25:47,081 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 [2021-11-12 23:25:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 23:25:51,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:57,563 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 [2021-11-12 23:25:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:25:58,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:58,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587421120] [2021-11-12 23:25:58,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587421120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:58,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1848249658] [2021-11-12 23:25:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:58,541 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:58,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:58,542 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:58,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-12 23:26:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:00,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2340 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:26:00,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-12 23:26:01,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-11-12 23:26:01,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1848249658] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:26:01,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:26:01,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22, 20, 4] total 41 [2021-11-12 23:26:01,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387985407] [2021-11-12 23:26:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:01,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:26:01,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:01,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:26:01,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2021-11-12 23:26:01,659 INFO L87 Difference]: Start difference. First operand 447 states and 612 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:26:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:01,832 INFO L93 Difference]: Finished difference Result 830 states and 1165 transitions. [2021-11-12 23:26:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:26:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 301 [2021-11-12 23:26:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:01,837 INFO L225 Difference]: With dead ends: 830 [2021-11-12 23:26:01,837 INFO L226 Difference]: Without dead ends: 453 [2021-11-12 23:26:01,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 1150 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 23:26:01,841 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 20 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:01,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1621 Invalid, 16 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 51.13ms Time] [2021-11-12 23:26:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-12 23:26:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 441. [2021-11-12 23:26:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 264 states have (on average 1.1590909090909092) internal successors, (306), 267 states have internal predecessors, (306), 146 states have call successors, (146), 29 states have call predecessors, (146), 30 states have return successors, (153), 145 states have call predecessors, (153), 145 states have call successors, (153) [2021-11-12 23:26:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 605 transitions. [2021-11-12 23:26:01,869 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 605 transitions. Word has length 301 [2021-11-12 23:26:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:01,869 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 605 transitions. [2021-11-12 23:26:01,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:26:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 605 transitions. [2021-11-12 23:26:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-12 23:26:01,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:01,872 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:26:01,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:02,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-12 23:26:02,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:02,281 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:02,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2085383225, now seen corresponding path program 1 times [2021-11-12 23:26:02,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:02,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374044890] [2021-11-12 23:26:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:02,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:02,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:02,288 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:02,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:26:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:06,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:26:06,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:06,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:26:08,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:26:08,145 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 [2021-11-12 23:26:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 23:26:12,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:18,333 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 [2021-11-12 23:26:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:26:19,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:19,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374044890] [2021-11-12 23:26:19,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374044890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:19,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [796533209] [2021-11-12 23:26:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:19,266 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:19,267 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:19,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-12 23:26:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:20,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:26:20,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-12 23:26:22,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-12 23:26:23,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [796533209] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:26:23,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:26:23,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22, 20, 10] total 48 [2021-11-12 23:26:23,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452299023] [2021-11-12 23:26:23,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:23,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:26:23,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:23,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:26:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-11-12 23:26:23,797 INFO L87 Difference]: Start difference. First operand 441 states and 605 transitions. Second operand has 10 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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) [2021-11-12 23:26:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:25,095 INFO L93 Difference]: Finished difference Result 827 states and 1171 transitions. [2021-11-12 23:26:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:26:25,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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 305 [2021-11-12 23:26:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:25,100 INFO L225 Difference]: With dead ends: 827 [2021-11-12 23:26:25,101 INFO L226 Difference]: Without dead ends: 451 [2021-11-12 23:26:25,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1159 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 23:26:25,105 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 19 mSDsluCounter, 4215 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 451.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.08ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 496.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:25,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 4747 Invalid, 175 Unknown, 0 Unchecked, 10.08ms Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 496.67ms Time] [2021-11-12 23:26:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-12 23:26:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 448. [2021-11-12 23:26:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 270 states have (on average 1.1555555555555554) internal successors, (312), 274 states have internal predecessors, (312), 146 states have call successors, (146), 29 states have call predecessors, (146), 31 states have return successors, (164), 145 states have call predecessors, (164), 145 states have call successors, (164) [2021-11-12 23:26:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 622 transitions. [2021-11-12 23:26:25,132 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 622 transitions. Word has length 305 [2021-11-12 23:26:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:25,132 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 622 transitions. [2021-11-12 23:26:25,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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) [2021-11-12 23:26:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 622 transitions. [2021-11-12 23:26:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 23:26:25,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:25,135 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:26:25,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:25,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-12 23:26:25,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:25,548 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1764446094, now seen corresponding path program 1 times [2021-11-12 23:26:25,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:25,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565269844] [2021-11-12 23:26:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:25,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:25,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:25,553 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:25,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 23:26:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:29,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:26:29,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:30,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:26:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:26:31,250 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 [2021-11-12 23:26:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 23:26:35,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:41,117 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 [2021-11-12 23:26:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:26:41,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:41,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565269844] [2021-11-12 23:26:41,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565269844] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:41,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1732878029] [2021-11-12 23:26:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:26:41,939 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:41,940 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:41,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-12 23:26:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:26:43,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:26:43,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-12 23:26:45,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-12 23:26:47,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1732878029] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:26:47,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:26:47,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 20, 5] total 44 [2021-11-12 23:26:47,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808578479] [2021-11-12 23:26:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:26:47,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:26:47,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:47,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:26:47,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2021-11-12 23:26:47,636 INFO L87 Difference]: Start difference. First operand 448 states and 622 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:26:49,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:51,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:54,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:56,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:58,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:00,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:02,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:03,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:05,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:07,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:09,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:10,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:11,076 INFO L93 Difference]: Finished difference Result 850 states and 1236 transitions. [2021-11-12 23:27:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:27:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 307 [2021-11-12 23:27:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:11,084 INFO L225 Difference]: With dead ends: 850 [2021-11-12 23:27:11,085 INFO L226 Difference]: Without dead ends: 466 [2021-11-12 23:27:11,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1170 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2021-11-12 23:27:11,091 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 34 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22562.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 22931.85ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:11,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 2083 Invalid, 126 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 7 Unknown, 42 Unchecked, 22931.85ms Time] [2021-11-12 23:27:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-12 23:27:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 455. [2021-11-12 23:27:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 281 states have internal predecessors, (320), 146 states have call successors, (146), 29 states have call predecessors, (146), 31 states have return successors, (164), 145 states have call predecessors, (164), 145 states have call successors, (164) [2021-11-12 23:27:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 630 transitions. [2021-11-12 23:27:11,139 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 630 transitions. Word has length 307 [2021-11-12 23:27:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:11,140 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 630 transitions. [2021-11-12 23:27:11,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:27:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 630 transitions. [2021-11-12 23:27:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 23:27:11,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:11,143 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:27:11,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:11,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:11,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:11,567 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1346557392, now seen corresponding path program 1 times [2021-11-12 23:27:11,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:11,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267512132] [2021-11-12 23:27:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:11,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:11,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:11,572 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:11,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-12 23:27:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:15,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:27:15,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:15,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:27:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:27:17,387 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 [2021-11-12 23:27:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 23:27:21,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:27,816 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 [2021-11-12 23:27:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:27:28,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:28,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267512132] [2021-11-12 23:27:28,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267512132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:28,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373838910] [2021-11-12 23:27:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:28,856 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:28,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:28,857 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:28,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-12 23:27:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:30,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:27:30,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-12 23:27:31,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-12 23:27:32,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373838910] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:27:32,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:27:32,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22, 20, 4] total 41 [2021-11-12 23:27:32,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891599508] [2021-11-12 23:27:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:32,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:27:32,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:27:32,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2021-11-12 23:27:32,048 INFO L87 Difference]: Start difference. First operand 455 states and 630 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:27:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:32,267 INFO L93 Difference]: Finished difference Result 853 states and 1217 transitions. [2021-11-12 23:27:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:27:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 307 [2021-11-12 23:27:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:32,272 INFO L225 Difference]: With dead ends: 853 [2021-11-12 23:27:32,272 INFO L226 Difference]: Without dead ends: 464 [2021-11-12 23:27:32,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1174 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 23:27:32,276 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 34 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:32,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1612 Invalid, 13 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 58.69ms Time] [2021-11-12 23:27:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-11-12 23:27:32,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 451. [2021-11-12 23:27:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 273 states have (on average 1.1465201465201464) internal successors, (313), 277 states have internal predecessors, (313), 146 states have call successors, (146), 29 states have call predecessors, (146), 31 states have return successors, (164), 145 states have call predecessors, (164), 145 states have call successors, (164) [2021-11-12 23:27:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 623 transitions. [2021-11-12 23:27:32,303 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 623 transitions. Word has length 307 [2021-11-12 23:27:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:32,304 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 623 transitions. [2021-11-12 23:27:32,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 23:27:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 623 transitions. [2021-11-12 23:27:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 23:27:32,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:32,307 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:27:32,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:32,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:32,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:32,731 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1330969454, now seen corresponding path program 1 times [2021-11-12 23:27:32,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:32,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408740527] [2021-11-12 23:27:32,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:32,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:32,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:32,739 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:32,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-12 23:27:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:36,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2351 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:27:36,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:37,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:27:38,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:27:38,457 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 [2021-11-12 23:27:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 23:27:43,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:50,132 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 [2021-11-12 23:27:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-12 23:27:51,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:51,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408740527] [2021-11-12 23:27:51,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408740527] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:27:51,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1685554208] [2021-11-12 23:27:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:51,275 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:27:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:27:51,276 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:27:51,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-12 23:27:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:56,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2351 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 23:27:56,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:57,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:28:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-12 23:28:02,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:05,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 23:28:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-12 23:28:06,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1685554208] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:28:06,707 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:28:06,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [22, 20] total 56 [2021-11-12 23:28:06,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020429298] [2021-11-12 23:28:06,707 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:28:06,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-12 23:28:06,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:28:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-12 23:28:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2873, Unknown=0, NotChecked=0, Total=3080 [2021-11-12 23:28:06,710 INFO L87 Difference]: Start difference. First operand 451 states and 623 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, (57), 3 states have call predecessors, (57), 6 states have return successors, (56), 12 states have call predecessors, (56), 10 states have call successors, (56) [2021-11-12 23:28:08,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:10,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:12,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:14,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:16,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:23,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:25,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:27,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:29,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:31,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:36,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:38,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:40,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:42,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:44,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:45,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:47,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:49,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:51,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:53,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:54,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:56,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:58,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:00,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:03,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:05,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:07,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:09,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:11,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:13,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:15,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:29:17,638 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 [] [2021-11-12 23:29:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:25,148 INFO L93 Difference]: Finished difference Result 1112 states and 1586 transitions. [2021-11-12 23:29:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-12 23:29:25,150 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, (57), 3 states have call predecessors, (57), 6 states have return successors, (56), 12 states have call predecessors, (56), 10 states have call successors, (56) Word has length 307 [2021-11-12 23:29:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:25,159 INFO L225 Difference]: With dead ends: 1112 [2021-11-12 23:29:25,159 INFO L226 Difference]: Without dead ends: 719 [2021-11-12 23:29:25,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1151 SyntacticMatches, 20 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=228, Invalid=3194, Unknown=0, NotChecked=0, Total=3422 [2021-11-12 23:29:25,165 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 280 mSDsluCounter, 7557 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 183 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75524.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 8391 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.19ms SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 77503.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:25,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 8391 Invalid, 2875 Unknown, 0 Unchecked, 38.19ms Time], IncrementalHoareTripleChecker [183 Valid, 2205 Invalid, 26 Unknown, 461 Unchecked, 77503.89ms Time] [2021-11-12 23:29:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-12 23:29:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 587. [2021-11-12 23:29:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 367 states have (on average 1.1580381471389645) internal successors, (425), 373 states have internal predecessors, (425), 179 states have call successors, (179), 36 states have call predecessors, (179), 40 states have return successors, (213), 178 states have call predecessors, (213), 178 states have call successors, (213) [2021-11-12 23:29:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 817 transitions. [2021-11-12 23:29:25,227 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 817 transitions. Word has length 307 [2021-11-12 23:29:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:25,228 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 817 transitions. [2021-11-12 23:29:25,229 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, (57), 3 states have call predecessors, (57), 6 states have return successors, (56), 12 states have call predecessors, (56), 10 states have call successors, (56) [2021-11-12 23:29:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 817 transitions. [2021-11-12 23:29:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-12 23:29:25,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:25,232 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:29:25,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:25,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:25,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:25,655 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:29:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1263994330, now seen corresponding path program 1 times [2021-11-12 23:29:25,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:29:25,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201919112] [2021-11-12 23:29:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:25,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:29:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:29:25,662 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:29:25,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-12 23:29:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:31,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:29:31,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:31,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:29:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:29:32,953 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 [2021-11-12 23:29:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-12 23:29:38,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:46,595 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 [2021-11-12 23:29:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-12 23:29:47,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:29:47,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201919112] [2021-11-12 23:29:47,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201919112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:29:47,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1413930934] [2021-11-12 23:29:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:47,793 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:47,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:29:47,794 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:29:47,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-12 23:29:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:29:49,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-11-12 23:29:52,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-12 23:29:53,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1413930934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:29:53,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:29:53,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [22, 20] total 48 [2021-11-12 23:29:53,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183085862] [2021-11-12 23:29:53,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:29:53,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:29:53,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:29:53,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:29:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-11-12 23:29:53,467 INFO L87 Difference]: Start difference. First operand 587 states and 817 transitions. Second operand has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-12 23:29:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:55,102 INFO L93 Difference]: Finished difference Result 1029 states and 1459 transitions. [2021-11-12 23:29:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:29:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 311 [2021-11-12 23:29:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:55,110 INFO L225 Difference]: With dead ends: 1029 [2021-11-12 23:29:55,111 INFO L226 Difference]: Without dead ends: 578 [2021-11-12 23:29:55,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1185 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 23:29:55,116 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 19 mSDsluCounter, 4726 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 614.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.95ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 669.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:55,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5257 Invalid, 199 Unknown, 0 Unchecked, 11.95ms Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 669.10ms Time] [2021-11-12 23:29:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-12 23:29:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 572. [2021-11-12 23:29:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 353 states have (on average 1.1529745042492918) internal successors, (407), 359 states have internal predecessors, (407), 179 states have call successors, (179), 35 states have call predecessors, (179), 39 states have return successors, (211), 178 states have call predecessors, (211), 178 states have call successors, (211) [2021-11-12 23:29:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 797 transitions. [2021-11-12 23:29:55,178 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 797 transitions. Word has length 311 [2021-11-12 23:29:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:55,179 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 797 transitions. [2021-11-12 23:29:55,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-12 23:29:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 797 transitions. [2021-11-12 23:29:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-12 23:29:55,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:29:55,183 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:29:55,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:55,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:55,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:55,608 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:29:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:29:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1109573669, now seen corresponding path program 1 times [2021-11-12 23:29:55,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:29:55,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120661894] [2021-11-12 23:29:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:55,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:29:55,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:29:55,614 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:29:55,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-12 23:30:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:01,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 23:30:01,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:01,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:30:03,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:30:03,111 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 [2021-11-12 23:30:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 288 proven. 9 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-12 23:30:08,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:17,298 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 [2021-11-12 23:30:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:30:18,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:18,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120661894] [2021-11-12 23:30:18,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120661894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:18,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802401110] [2021-11-12 23:30:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:18,602 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:18,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:30:18,603 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:30:18,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-12 23:30:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:24,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:30:24,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:25,370 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 [2021-11-12 23:30:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 292 proven. 6 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-12 23:30:35,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-11-12 23:30:45,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [802401110] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:45,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907072989] [2021-11-12 23:30:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:45,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:30:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:30:45,100 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:30:45,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23ed138-8a45-4db6-b07b-efaf74b7649b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-12 23:30:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:47,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 23:30:47,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:47,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:30:49,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:30:49,034 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 [2021-11-12 23:30:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 288 proven. 5 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-12 23:30:52,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:31:13,645 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 [2021-11-12 23:31:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-11-12 23:31:15,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907072989] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:31:15,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:31:15,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 13, 10, 17, 15] total 71 [2021-11-12 23:31:15,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198222388] [2021-11-12 23:31:15,437 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:31:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-12 23:31:15,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:31:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-12 23:31:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4698, Unknown=6, NotChecked=0, Total=4970 [2021-11-12 23:31:15,442 INFO L87 Difference]: Start difference. First operand 572 states and 797 transitions. Second operand has 71 states, 68 states have (on average 5.882352941176471) internal successors, (400), 58 states have internal predecessors, (400), 28 states have call successors, (123), 5 states have call predecessors, (123), 21 states have return successors, (127), 33 states have call predecessors, (127), 28 states have call successors, (127) [2021-11-12 23:31:17,728 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 [] [2021-11-12 23:31:19,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:21,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:23,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:25,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:27,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:29,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:31,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:33,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:35,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:37,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:39,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:41,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:43,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:31:45,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:09,001 WARN L227 SmtUtils]: Spent 10.18s 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) [2021-11-12 23:33:22,974 WARN L227 SmtUtils]: Spent 10.21s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:33:34,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:36,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:38,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:40,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:42,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:43,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:45,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:47,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:48,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:50,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:52,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:54,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:56,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:33:59,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:01,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:09,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:11,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:13,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:15,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:17,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:19,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:34:21,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []