./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:25,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:25,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:25,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:25,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:25,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:25,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:25,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:25,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:25,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:25,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:25,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:25,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:25,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:25,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:25,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:25,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:25,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:25,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:25,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:25,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:25,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:25,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:25,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:25,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:25,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:25,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:25,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:25,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:25,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:25,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:25,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:25,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:25,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:25,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:25,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:25,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:25,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:25,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:25,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:25,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:25,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:35:25,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:25,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:25,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:25,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:25,915 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:25,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:25,915 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:25,916 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:35:25,916 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:25,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:25,920 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:35:25,920 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:35:25,921 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:25,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:35:25,921 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:35:25,921 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:35:25,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:25,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:25,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:25,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:25,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:25,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:25,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:25,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:25,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:25,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:25,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:25,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:25,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:25,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:25,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:25,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:25,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:35:25,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:35:25,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:25,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:25,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:25,928 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_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b [2021-11-19 14:35:26,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:26,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:26,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:26,244 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:26,245 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:26,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-19 14:35:26,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/350a807bf/5e14a1706d104c34b0494871f79d4b5d/FLAG02be9173b [2021-11-19 14:35:27,189 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:27,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-19 14:35:27,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/350a807bf/5e14a1706d104c34b0494871f79d4b5d/FLAG02be9173b [2021-11-19 14:35:27,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/350a807bf/5e14a1706d104c34b0494871f79d4b5d [2021-11-19 14:35:27,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:27,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:27,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:27,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:27,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:27,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:27" (1/1) ... [2021-11-19 14:35:27,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6991f629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:27, skipping insertion in model container [2021-11-19 14:35:27,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:27" (1/1) ... [2021-11-19 14:35:27,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:27,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:28,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-19 14:35:28,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-19 14:35:28,150 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:28,156 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:29,127 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,127 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,128 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,128 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,129 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,155 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,155 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,157 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,157 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,557 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:29,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:29,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:29,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:29,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:29,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:29,564 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:29,565 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:29,565 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:29,566 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:29,772 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:29,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:29,987 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:30,113 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:30,180 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:35:30,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d1f0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:30, skipping insertion in model container [2021-11-19 14:35:30,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:30,182 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:35:30,184 INFO L158 Benchmark]: Toolchain (without parser) took 2531.79ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.6MB in the beginning and 79.6MB in the end (delta: -23.1MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-11-19 14:35:30,185 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 52.7MB in the beginning and 52.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:30,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2526.65ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.4MB in the beginning and 79.6MB in the end (delta: -23.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-11-19 14:35:30,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory was 52.7MB in the beginning and 52.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2526.65ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.4MB in the beginning and 79.6MB in the end (delta: -23.3MB). Peak memory consumption was 27.8MB. 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_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:32,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:32,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:32,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:32,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:32,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:32,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:32,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:32,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:32,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:32,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:32,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:32,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:32,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:32,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:32,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:32,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:32,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:32,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:32,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:32,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:32,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:32,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:32,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:32,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:32,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:32,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:32,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:32,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:32,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:32,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:32,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:32,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:32,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:32,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:32,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:32,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:32,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:32,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:32,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:32,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:32,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:35:32,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:32,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:32,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:32,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:32,586 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:32,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:32,586 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:32,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:32,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:32,587 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:32,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:32,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:32,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:32,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:32,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:32,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:32,591 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:35:32,591 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:35:32,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:32,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:32,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:32,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:32,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:35:32,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:32,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:32,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:32,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:32,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:32,594 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:35:32,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:32,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:32,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:32,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:32,595 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_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a99219981ed729bbe98ee164646a9fab36b2f68695363dc5b6e7677163d6c74b [2021-11-19 14:35:32,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:32,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:32,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:32,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:32,970 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:32,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-19 14:35:33,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/c5aba9da0/b2a86ec9e3d94c3285390a647fd08997/FLAG64dfc475e [2021-11-19 14:35:34,002 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:34,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i [2021-11-19 14:35:34,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/c5aba9da0/b2a86ec9e3d94c3285390a647fd08997/FLAG64dfc475e [2021-11-19 14:35:34,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/data/c5aba9da0/b2a86ec9e3d94c3285390a647fd08997 [2021-11-19 14:35:34,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:34,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:34,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:34,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:34,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:34,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:34" (1/1) ... [2021-11-19 14:35:34,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8a20cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:34, skipping insertion in model container [2021-11-19 14:35:34,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:34" (1/1) ... [2021-11-19 14:35:34,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:34,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:34,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-19 14:35:34,938 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-19 14:35:34,966 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:34,972 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:35,920 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,921 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,921 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,922 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,923 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,937 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:35,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:36,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:36,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:36,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:36,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:36,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:36,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:36,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:36,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:36,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:36,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:36,548 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:36,645 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:36,646 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:36,771 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:36,866 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:35:36,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:36,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-19 14:35:36,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-19 14:35:36,947 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:36,949 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:37,028 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,038 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,039 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,040 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,043 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,077 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:37,078 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:37,079 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:37,080 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:37,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:37,081 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:37,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:37,082 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:37,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:37,083 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:37,104 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:37,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,171 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,214 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:37,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:35:37,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4503,4516] [2021-11-19 14:35:37,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness.i[4563,4576] [2021-11-19 14:35:37,323 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:35:37,323 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:35:37,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,385 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,385 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,385 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,386 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,391 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,392 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,392 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:35:37,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:35:37,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:35:37,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:35:37,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:35:37,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:35:37,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:35:37,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:35:37,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:35:37,477 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:35:37,502 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:35:37,571 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,572 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:35:37,704 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:38,071 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:35:38,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38 WrapperNode [2021-11-19 14:35:38,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:38,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:38,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:35:38,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:35:38,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,313 INFO L137 Inliner]: procedures = 717, calls = 2925, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1196 [2021-11-19 14:35:38,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:38,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:35:38,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:35:38,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:35:38,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:35:38,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:35:38,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:35:38,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:35:38,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (1/1) ... [2021-11-19 14:35:38,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:38,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:38,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:35:38,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:35:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 14:35:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 14:35:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2021-11-19 14:35:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2021-11-19 14:35:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:35:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:35:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:35:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:35:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:35:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2021-11-19 14:35:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2021-11-19 14:35:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:35:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:35:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:35:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:35:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:35:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:35:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:35:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2021-11-19 14:35:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2021-11-19 14:35:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:35:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:35:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:35:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:35:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:35:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2021-11-19 14:35:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2021-11-19 14:35:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:35:38,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:35:38,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2021-11-19 14:35:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2021-11-19 14:35:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:35:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:35:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:35:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:35:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2021-11-19 14:35:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2021-11-19 14:35:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2021-11-19 14:35:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2021-11-19 14:35:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:35:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:35:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2021-11-19 14:35:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2021-11-19 14:35:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2021-11-19 14:35:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2021-11-19 14:35:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:35:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:35:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2021-11-19 14:35:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2021-11-19 14:35:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2021-11-19 14:35:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2021-11-19 14:35:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2021-11-19 14:35:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2021-11-19 14:35:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2021-11-19 14:35:38,571 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2021-11-19 14:35:38,927 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:35:38,929 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:35:55,540 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:35:55,551 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:35:55,552 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:35:55,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:55 BoogieIcfgContainer [2021-11-19 14:35:55,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:35:55,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:35:55,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:35:55,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:35:55,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:35:34" (1/3) ... [2021-11-19 14:35:55,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c97181e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:55, skipping insertion in model container [2021-11-19 14:35:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:38" (2/3) ... [2021-11-19 14:35:55,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c97181e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:55, skipping insertion in model container [2021-11-19 14:35:55,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:55" (3/3) ... [2021-11-19 14:35:55,566 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_up_to_harness.i [2021-11-19 14:35:55,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:35:55,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 14:35:55,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:35:55,630 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:35:55,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 14:35:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 232 states have (on average 1.2112068965517242) internal successors, (281), 234 states have internal predecessors, (281), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-19 14:35:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 14:35:55,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:55,667 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] [2021-11-19 14:35:55,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1080850555, now seen corresponding path program 1 times [2021-11-19 14:35:55,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:55,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921727131] [2021-11-19 14:35:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:55,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:55,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:55,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:55,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:35:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:56,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:35:56,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:35:56,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:35:56,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:56,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921727131] [2021-11-19 14:35:56,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921727131] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:35:56,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:35:56,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:35:56,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837374671] [2021-11-19 14:35:56,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:56,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:35:56,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:35:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:35:56,922 INFO L87 Difference]: Start difference. First operand has 409 states, 232 states have (on average 1.2112068965517242) internal successors, (281), 234 states have internal predecessors, (281), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 14:35:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:57,009 INFO L93 Difference]: Finished difference Result 812 states and 1289 transitions. [2021-11-19 14:35:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:35:57,015 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 [2021-11-19 14:35:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:57,043 INFO L225 Difference]: With dead ends: 812 [2021-11-19 14:35:57,044 INFO L226 Difference]: Without dead ends: 403 [2021-11-19 14:35:57,056 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 [2021-11-19 14:35:57,061 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:57,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:35:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-19 14:35:57,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-11-19 14:35:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 227 states have (on average 1.2026431718061674) internal successors, (273), 229 states have internal predecessors, (273), 154 states have call successors, (154), 20 states have call predecessors, (154), 20 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2021-11-19 14:35:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 580 transitions. [2021-11-19 14:35:57,230 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 580 transitions. Word has length 52 [2021-11-19 14:35:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:57,232 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 580 transitions. [2021-11-19 14:35:57,232 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) [2021-11-19 14:35:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 580 transitions. [2021-11-19 14:35:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 14:35:57,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:57,235 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] [2021-11-19 14:35:57,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:57,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:57,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash 135004093, now seen corresponding path program 1 times [2021-11-19 14:35:57,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:57,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436639957] [2021-11-19 14:35:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:57,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:57,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:57,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:57,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:35:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:58,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:35:58,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:35:58,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:35:58,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:58,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436639957] [2021-11-19 14:35:58,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436639957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:35:58,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:35:58,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 14:35:58,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52281309] [2021-11-19 14:35:58,625 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:58,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:35:58,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:35:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:35:58,628 INFO L87 Difference]: Start difference. First operand 403 states and 580 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 14:35:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:58,930 INFO L93 Difference]: Finished difference Result 801 states and 1203 transitions. [2021-11-19 14:35:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:35:58,931 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 [2021-11-19 14:35:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:58,937 INFO L225 Difference]: With dead ends: 801 [2021-11-19 14:35:58,938 INFO L226 Difference]: Without dead ends: 415 [2021-11-19 14:35:58,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:35:58,942 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 28 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:58,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 3403 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:35:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-19 14:35:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-11-19 14:35:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 236 states have (on average 1.2076271186440677) internal successors, (285), 238 states have internal predecessors, (285), 155 states have call successors, (155), 22 states have call predecessors, (155), 22 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-19 14:35:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 594 transitions. [2021-11-19 14:35:58,977 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 594 transitions. Word has length 52 [2021-11-19 14:35:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:58,978 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 594 transitions. [2021-11-19 14:35:58,978 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) [2021-11-19 14:35:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 594 transitions. [2021-11-19 14:35:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 14:35:58,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:58,982 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] [2021-11-19 14:35:59,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:59,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:59,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1441797306, now seen corresponding path program 1 times [2021-11-19 14:35:59,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:59,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920883650] [2021-11-19 14:35:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:59,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:59,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:59,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:59,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:35:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:59,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:35:59,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:36:00,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:36:01,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:01,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920883650] [2021-11-19 14:36:01,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920883650] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:01,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:01,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:36:01,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348268555] [2021-11-19 14:36:01,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:01,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:01,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:01,064 INFO L87 Difference]: Start difference. First operand 415 states and 594 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:36:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:01,435 INFO L93 Difference]: Finished difference Result 827 states and 1191 transitions. [2021-11-19 14:36:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:36:01,436 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 [2021-11-19 14:36:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:01,442 INFO L225 Difference]: With dead ends: 827 [2021-11-19 14:36:01,442 INFO L226 Difference]: Without dead ends: 424 [2021-11-19 14:36:01,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:01,446 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 8 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:01,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2798 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-19 14:36:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-19 14:36:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 242 states have (on average 1.1983471074380165) internal successors, (290), 244 states have internal predecessors, (290), 156 states have call successors, (156), 24 states have call predecessors, (156), 24 states have return successors, (156), 155 states have call predecessors, (156), 155 states have call successors, (156) [2021-11-19 14:36:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 602 transitions. [2021-11-19 14:36:01,476 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 602 transitions. Word has length 85 [2021-11-19 14:36:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:01,476 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 602 transitions. [2021-11-19 14:36:01,477 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) [2021-11-19 14:36:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 602 transitions. [2021-11-19 14:36:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 14:36:01,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:01,481 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] [2021-11-19 14:36:01,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:01,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:01,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1129671498, now seen corresponding path program 1 times [2021-11-19 14:36:01,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:01,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834814277] [2021-11-19 14:36:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:01,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:01,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:01,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:01,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:36:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:02,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:36:02,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:36:03,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:36:04,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:04,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834814277] [2021-11-19 14:36:04,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834814277] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:04,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:04,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-19 14:36:04,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414795959] [2021-11-19 14:36:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:04,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:36:04,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:36:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:04,525 INFO L87 Difference]: Start difference. First operand 424 states and 602 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:36:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:05,176 INFO L93 Difference]: Finished difference Result 841 states and 1194 transitions. [2021-11-19 14:36:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:36:05,178 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 [2021-11-19 14:36:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:05,183 INFO L225 Difference]: With dead ends: 841 [2021-11-19 14:36:05,184 INFO L226 Difference]: Without dead ends: 426 [2021-11-19 14:36:05,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:05,189 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 10 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:05,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3347 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:36:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-19 14:36:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2021-11-19 14:36:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 243 states have (on average 1.1934156378600822) internal successors, (290), 246 states have internal predecessors, (290), 156 states have call successors, (156), 24 states have call predecessors, (156), 25 states have return successors, (157), 155 states have call predecessors, (157), 155 states have call successors, (157) [2021-11-19 14:36:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 603 transitions. [2021-11-19 14:36:05,224 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 603 transitions. Word has length 87 [2021-11-19 14:36:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:05,226 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 603 transitions. [2021-11-19 14:36:05,227 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) [2021-11-19 14:36:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 603 transitions. [2021-11-19 14:36:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:36:05,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:05,234 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] [2021-11-19 14:36:05,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:05,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:05,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -752690746, now seen corresponding path program 1 times [2021-11-19 14:36:05,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:05,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104818461] [2021-11-19 14:36:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:05,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:05,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:05,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:05,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:36:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:06,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:36:06,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:36:07,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:36:08,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:08,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104818461] [2021-11-19 14:36:08,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104818461] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:08,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:08,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-19 14:36:08,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238023696] [2021-11-19 14:36:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:08,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:36:08,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:36:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:36:08,748 INFO L87 Difference]: Start difference. First operand 426 states and 603 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:36:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:09,705 INFO L93 Difference]: Finished difference Result 846 states and 1201 transitions. [2021-11-19 14:36:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:36:09,707 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 [2021-11-19 14:36:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:09,712 INFO L225 Difference]: With dead ends: 846 [2021-11-19 14:36:09,712 INFO L226 Difference]: Without dead ends: 432 [2021-11-19 14:36:09,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:36:09,716 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 13 mSDsluCounter, 3330 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:09,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 3894 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-19 14:36:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2021-11-19 14:36:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 247 states have (on average 1.194331983805668) internal successors, (295), 249 states have internal predecessors, (295), 156 states have call successors, (156), 25 states have call predecessors, (156), 25 states have return successors, (157), 155 states have call predecessors, (157), 155 states have call successors, (157) [2021-11-19 14:36:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 608 transitions. [2021-11-19 14:36:09,742 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 608 transitions. Word has length 89 [2021-11-19 14:36:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:09,743 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 608 transitions. [2021-11-19 14:36:09,743 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) [2021-11-19 14:36:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 608 transitions. [2021-11-19 14:36:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:36:09,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:09,745 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] [2021-11-19 14:36:09,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:09,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:09,965 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1947160898, now seen corresponding path program 1 times [2021-11-19 14:36:09,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:09,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633924436] [2021-11-19 14:36:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:09,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:09,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:09,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:09,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:36:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:10,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:10,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 14:36:11,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:36:13,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:13,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633924436] [2021-11-19 14:36:13,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633924436] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:13,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:13,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-11-19 14:36:13,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49265411] [2021-11-19 14:36:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:13,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:13,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:13,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:13,808 INFO L87 Difference]: Start difference. First operand 430 states and 608 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:36:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:14,851 INFO L93 Difference]: Finished difference Result 852 states and 1204 transitions. [2021-11-19 14:36:14,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:36:14,852 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 [2021-11-19 14:36:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:14,864 INFO L225 Difference]: With dead ends: 852 [2021-11-19 14:36:14,864 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 14:36:14,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:36:14,868 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 17 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:14,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 4441 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 14:36:14,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2021-11-19 14:36:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 247 states have (on average 1.1902834008097165) internal successors, (294), 249 states have internal predecessors, (294), 156 states have call successors, (156), 25 states have call predecessors, (156), 25 states have return successors, (157), 155 states have call predecessors, (157), 155 states have call successors, (157) [2021-11-19 14:36:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 607 transitions. [2021-11-19 14:36:14,894 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 607 transitions. Word has length 91 [2021-11-19 14:36:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:14,895 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 607 transitions. [2021-11-19 14:36:14,895 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) [2021-11-19 14:36:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 607 transitions. [2021-11-19 14:36:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 14:36:14,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:14,897 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] [2021-11-19 14:36:14,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:15,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:15,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1975904838, now seen corresponding path program 1 times [2021-11-19 14:36:15,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:15,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773134736] [2021-11-19 14:36:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:15,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:15,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:15,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:15,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:36:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:15,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:15,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:36:16,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:36:16,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:16,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773134736] [2021-11-19 14:36:16,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773134736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:16,296 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:16,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 14:36:16,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686404836] [2021-11-19 14:36:16,296 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:16,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:36:16,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:36:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:36:16,298 INFO L87 Difference]: Start difference. First operand 430 states and 607 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-19 14:36:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:16,509 INFO L93 Difference]: Finished difference Result 450 states and 630 transitions. [2021-11-19 14:36:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:36:16,510 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 [2021-11-19 14:36:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:16,514 INFO L225 Difference]: With dead ends: 450 [2021-11-19 14:36:16,515 INFO L226 Difference]: Without dead ends: 447 [2021-11-19 14:36:16,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:36:16,516 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 26 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:16,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3429 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:36:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-19 14:36:16,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2021-11-19 14:36:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 257 states have (on average 1.198443579766537) internal successors, (308), 259 states have internal predecessors, (308), 157 states have call successors, (157), 27 states have call predecessors, (157), 27 states have return successors, (158), 156 states have call predecessors, (158), 156 states have call successors, (158) [2021-11-19 14:36:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 623 transitions. [2021-11-19 14:36:16,544 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 623 transitions. Word has length 93 [2021-11-19 14:36:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:16,546 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 623 transitions. [2021-11-19 14:36:16,546 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) [2021-11-19 14:36:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 623 transitions. [2021-11-19 14:36:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-19 14:36:16,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:16,552 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:16,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:16,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:16,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 845259220, now seen corresponding path program 1 times [2021-11-19 14:36:16,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:16,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557334898] [2021-11-19 14:36:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:16,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:16,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:16,771 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:16,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:36:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:17,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:36:17,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 14:36:18,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 34 proven. 45 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2021-11-19 14:36:19,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:19,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557334898] [2021-11-19 14:36:19,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557334898] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:19,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:19,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:36:19,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237436464] [2021-11-19 14:36:19,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:19,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:19,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:19,491 INFO L87 Difference]: Start difference. First operand 443 states and 623 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:36:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:19,731 INFO L93 Difference]: Finished difference Result 859 states and 1251 transitions. [2021-11-19 14:36:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:36:19,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 267 [2021-11-19 14:36:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:19,737 INFO L225 Difference]: With dead ends: 859 [2021-11-19 14:36:19,737 INFO L226 Difference]: Without dead ends: 450 [2021-11-19 14:36:19,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:19,741 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 8 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:19,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2841 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:36:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-19 14:36:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2021-11-19 14:36:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 260 states have (on average 1.1923076923076923) internal successors, (310), 262 states have internal predecessors, (310), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (158), 157 states have call predecessors, (158), 157 states have call successors, (158) [2021-11-19 14:36:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 626 transitions. [2021-11-19 14:36:19,767 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 626 transitions. Word has length 267 [2021-11-19 14:36:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:19,768 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 626 transitions. [2021-11-19 14:36:19,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:36:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 626 transitions. [2021-11-19 14:36:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-19 14:36:19,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:19,773 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:19,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:19,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:20,000 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 92072084, now seen corresponding path program 1 times [2021-11-19 14:36:20,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:20,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541149132] [2021-11-19 14:36:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:20,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:20,003 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:20,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:36:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:20,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1883 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:36:20,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-11-19 14:36:21,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 40 proven. 48 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-19 14:36:23,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:23,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541149132] [2021-11-19 14:36:23,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541149132] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:23,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-19 14:36:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932982430] [2021-11-19 14:36:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:23,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:36:23,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:36:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:23,365 INFO L87 Difference]: Start difference. First operand 448 states and 626 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:36:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:23,772 INFO L93 Difference]: Finished difference Result 858 states and 1241 transitions. [2021-11-19 14:36:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:36:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 271 [2021-11-19 14:36:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:23,777 INFO L225 Difference]: With dead ends: 858 [2021-11-19 14:36:23,777 INFO L226 Difference]: Without dead ends: 444 [2021-11-19 14:36:23,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:23,781 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 12 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:23,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3383 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:36:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-19 14:36:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2021-11-19 14:36:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 255 states have (on average 1.1764705882352942) internal successors, (300), 256 states have internal predecessors, (300), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-19 14:36:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 615 transitions. [2021-11-19 14:36:23,807 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 615 transitions. Word has length 271 [2021-11-19 14:36:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:23,808 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 615 transitions. [2021-11-19 14:36:23,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:36:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 615 transitions. [2021-11-19 14:36:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-19 14:36:23,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:23,813 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:23,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:24,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:24,028 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1909520800, now seen corresponding path program 1 times [2021-11-19 14:36:24,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:24,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000389609] [2021-11-19 14:36:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:24,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:24,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:24,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:24,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:36:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:24,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:36:24,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-19 14:36:25,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-11-19 14:36:28,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:28,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000389609] [2021-11-19 14:36:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000389609] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:28,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:28,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-19 14:36:28,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957016724] [2021-11-19 14:36:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:36:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:36:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:36:28,002 INFO L87 Difference]: Start difference. First operand 442 states and 615 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:36:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:28,759 INFO L93 Difference]: Finished difference Result 852 states and 1225 transitions. [2021-11-19 14:36:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:36:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 286 [2021-11-19 14:36:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:28,764 INFO L225 Difference]: With dead ends: 852 [2021-11-19 14:36:28,765 INFO L226 Difference]: Without dead ends: 444 [2021-11-19 14:36:28,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:36:28,769 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 17 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:28,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 3936 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-19 14:36:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2021-11-19 14:36:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 255 states have (on average 1.1725490196078432) internal successors, (299), 256 states have internal predecessors, (299), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-19 14:36:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 614 transitions. [2021-11-19 14:36:28,794 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 614 transitions. Word has length 286 [2021-11-19 14:36:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:28,794 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 614 transitions. [2021-11-19 14:36:28,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:36:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 614 transitions. [2021-11-19 14:36:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-19 14:36:28,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:28,800 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:28,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:29,016 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1819659488, now seen corresponding path program 1 times [2021-11-19 14:36:29,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:29,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764055049] [2021-11-19 14:36:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:29,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:29,019 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:29,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:36:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:30,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:30,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:36:31,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 12 proven. 62 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-19 14:36:33,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:33,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764055049] [2021-11-19 14:36:33,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764055049] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:33,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:33,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2021-11-19 14:36:33,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329749830] [2021-11-19 14:36:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:33,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:33,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:33,767 INFO L87 Difference]: Start difference. First operand 442 states and 614 transitions. Second operand has 9 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:36:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:34,757 INFO L93 Difference]: Finished difference Result 852 states and 1223 transitions. [2021-11-19 14:36:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:36:34,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 290 [2021-11-19 14:36:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:34,763 INFO L225 Difference]: With dead ends: 852 [2021-11-19 14:36:34,764 INFO L226 Difference]: Without dead ends: 444 [2021-11-19 14:36:34,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:36:34,767 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 21 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:34,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4489 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-19 14:36:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2021-11-19 14:36:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 255 states have (on average 1.1686274509803922) internal successors, (298), 256 states have internal predecessors, (298), 158 states have call successors, (158), 28 states have call predecessors, (158), 28 states have return successors, (157), 157 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-19 14:36:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 613 transitions. [2021-11-19 14:36:34,793 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 613 transitions. Word has length 290 [2021-11-19 14:36:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:34,794 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 613 transitions. [2021-11-19 14:36:34,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-19 14:36:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 613 transitions. [2021-11-19 14:36:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-19 14:36:34,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:34,831 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:34,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:35,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:35,032 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1475767136, now seen corresponding path program 1 times [2021-11-19 14:36:35,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:35,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544282886] [2021-11-19 14:36:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:35,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:35,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:35,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:35,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:36:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:36,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:36:36,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-19 14:36:36,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-19 14:36:37,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:37,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544282886] [2021-11-19 14:36:37,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544282886] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:37,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:37,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-19 14:36:37,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363152701] [2021-11-19 14:36:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:37,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:37,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:36:37,556 INFO L87 Difference]: Start difference. First operand 442 states and 613 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-19 14:36:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:37,939 INFO L93 Difference]: Finished difference Result 850 states and 1199 transitions. [2021-11-19 14:36:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 294 [2021-11-19 14:36:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:37,945 INFO L225 Difference]: With dead ends: 850 [2021-11-19 14:36:37,945 INFO L226 Difference]: Without dead ends: 447 [2021-11-19 14:36:37,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:37,948 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 164 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:37,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 1876 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-19 14:36:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-19 14:36:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 259 states have (on average 1.16988416988417) internal successors, (303), 261 states have internal predecessors, (303), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (169), 157 states have call predecessors, (169), 157 states have call successors, (169) [2021-11-19 14:36:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 630 transitions. [2021-11-19 14:36:37,977 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 630 transitions. Word has length 294 [2021-11-19 14:36:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:37,978 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 630 transitions. [2021-11-19 14:36:37,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 4 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-19 14:36:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 630 transitions. [2021-11-19 14:36:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-19 14:36:37,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:37,981 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:38,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:38,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:38,204 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -959546139, now seen corresponding path program 1 times [2021-11-19 14:36:38,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:38,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815616551] [2021-11-19 14:36:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:38,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:38,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:38,207 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:38,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:36:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:39,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:36:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:39,453 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 [2021-11-19 14:36:40,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:36:40,778 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 [2021-11-19 14:36:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 14:36:44,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:49,994 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 [2021-11-19 14:36:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-19 14:36:50,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:50,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815616551] [2021-11-19 14:36:50,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815616551] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:50,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [299643128] [2021-11-19 14:36:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:50,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:36:50,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:36:50,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 14:36:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:51,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:36:51,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-19 14:36:52,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2021-11-19 14:36:52,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [299643128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:52,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:36:52,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [22, 20] total 41 [2021-11-19 14:36:52,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359874531] [2021-11-19 14:36:52,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:52,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:36:52,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:36:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:36:52,929 INFO L87 Difference]: Start difference. First operand 447 states and 630 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:36:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:53,066 INFO L93 Difference]: Finished difference Result 828 states and 1190 transitions. [2021-11-19 14:36:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:36:53,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 296 [2021-11-19 14:36:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:53,072 INFO L225 Difference]: With dead ends: 828 [2021-11-19 14:36:53,072 INFO L226 Difference]: Without dead ends: 448 [2021-11-19 14:36:53,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1131 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:36:53,076 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 3 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:53,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1709 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:36:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-19 14:36:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2021-11-19 14:36:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 259 states have (on average 1.166023166023166) internal successors, (302), 261 states have internal predecessors, (302), 158 states have call successors, (158), 28 states have call predecessors, (158), 29 states have return successors, (169), 157 states have call predecessors, (169), 157 states have call successors, (169) [2021-11-19 14:36:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 629 transitions. [2021-11-19 14:36:53,105 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 629 transitions. Word has length 296 [2021-11-19 14:36:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:53,106 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 629 transitions. [2021-11-19 14:36:53,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:36:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 629 transitions. [2021-11-19 14:36:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-19 14:36:53,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:53,109 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:53,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:53,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-19 14:36:53,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:53,532 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:36:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash -66059801, now seen corresponding path program 1 times [2021-11-19 14:36:53,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:53,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754780020] [2021-11-19 14:36:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:53,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:53,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:53,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:36:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:54,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:36:54,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:54,792 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 [2021-11-19 14:36:56,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:36:56,004 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 [2021-11-19 14:36:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 14:36:59,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:04,681 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 [2021-11-19 14:37:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-19 14:37:05,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:05,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754780020] [2021-11-19 14:37:05,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754780020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:37:05,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1543427611] [2021-11-19 14:37:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:05,444 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:05,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:37:05,466 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:37:05,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 14:37:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:06,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:37:06,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-19 14:37:07,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:37:07,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1543427611] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:37:07,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:37:07,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 20, 5] total 42 [2021-11-19 14:37:07,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760106908] [2021-11-19 14:37:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:07,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:37:07,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:37:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:37:07,774 INFO L87 Difference]: Start difference. First operand 447 states and 629 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 14:37:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:08,041 INFO L93 Difference]: Finished difference Result 836 states and 1203 transitions. [2021-11-19 14:37:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:37:08,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 296 [2021-11-19 14:37:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:08,046 INFO L225 Difference]: With dead ends: 836 [2021-11-19 14:37:08,046 INFO L226 Difference]: Without dead ends: 450 [2021-11-19 14:37:08,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1129 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:37:08,050 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 153 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:08,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1378 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:37:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-19 14:37:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-19 14:37:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 264 states have internal predecessors, (304), 158 states have call successors, (158), 28 states have call predecessors, (158), 30 states have return successors, (182), 157 states have call predecessors, (182), 157 states have call successors, (182) [2021-11-19 14:37:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 644 transitions. [2021-11-19 14:37:08,080 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 644 transitions. Word has length 296 [2021-11-19 14:37:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:08,081 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 644 transitions. [2021-11-19 14:37:08,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 14:37:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 644 transitions. [2021-11-19 14:37:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-19 14:37:08,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:08,084 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:08,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:08,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 14:37:08,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:37:08,490 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1344215342, now seen corresponding path program 1 times [2021-11-19 14:37:08,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:08,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452490983] [2021-11-19 14:37:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:08,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:08,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:08,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:37:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:09,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:37:09,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:09,677 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 [2021-11-19 14:37:10,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:37:10,721 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 [2021-11-19 14:37:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 14:37:14,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:19,605 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 [2021-11-19 14:37:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-19 14:37:20,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:20,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452490983] [2021-11-19 14:37:20,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452490983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:37:20,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1736620259] [2021-11-19 14:37:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:20,288 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:20,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:37:20,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:37:20,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:37:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:21,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:37:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-19 14:37:22,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-19 14:37:23,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1736620259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:23,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:37:23,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22, 20] total 45 [2021-11-19 14:37:23,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494098108] [2021-11-19 14:37:23,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:23,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:37:23,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:37:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 14:37:23,166 INFO L87 Difference]: Start difference. First operand 450 states and 644 transitions. Second operand has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 8 states have internal predecessors, (121), 6 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2021-11-19 14:37:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:24,327 INFO L93 Difference]: Finished difference Result 833 states and 1205 transitions. [2021-11-19 14:37:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:37:24,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 8 states have internal predecessors, (121), 6 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) Word has length 302 [2021-11-19 14:37:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:24,332 INFO L225 Difference]: With dead ends: 833 [2021-11-19 14:37:24,333 INFO L226 Difference]: Without dead ends: 450 [2021-11-19 14:37:24,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1152 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=182, Invalid=2074, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:37:24,337 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 299 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:24,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2149 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:37:24,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-19 14:37:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-19 14:37:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 264 states have internal predecessors, (304), 158 states have call successors, (158), 28 states have call predecessors, (158), 30 states have return successors, (172), 157 states have call predecessors, (172), 157 states have call successors, (172) [2021-11-19 14:37:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 634 transitions. [2021-11-19 14:37:24,371 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 634 transitions. Word has length 302 [2021-11-19 14:37:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:24,374 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 634 transitions. [2021-11-19 14:37:24,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 8 states have internal predecessors, (121), 6 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2021-11-19 14:37:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 634 transitions. [2021-11-19 14:37:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-19 14:37:24,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:24,377 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:24,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:24,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:24,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:24,800 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash 283100203, now seen corresponding path program 1 times [2021-11-19 14:37:24,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:24,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247064660] [2021-11-19 14:37:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:24,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:24,803 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:37:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:25,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:37:25,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:25,988 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 [2021-11-19 14:37:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:37:26,911 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 [2021-11-19 14:37:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 14:37:30,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:35,002 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 [2021-11-19 14:37:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-19 14:37:35,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:37:35,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247064660] [2021-11-19 14:37:35,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247064660] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:37:35,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2024394094] [2021-11-19 14:37:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:35,703 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:37:35,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:37:35,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:37:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:37:36,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:37:36,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:37:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2021-11-19 14:37:37,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:37:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2021-11-19 14:37:38,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2024394094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:37:38,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:37:38,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [22, 20] total 43 [2021-11-19 14:37:38,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046898731] [2021-11-19 14:37:38,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:37:38,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:37:38,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:37:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:37:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 14:37:38,215 INFO L87 Difference]: Start difference. First operand 450 states and 634 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 14:37:40,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:43,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:45,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:48,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:49,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:51,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:53,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:55,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:56,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:58,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:37:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:37:59,132 INFO L93 Difference]: Finished difference Result 920 states and 1324 transitions. [2021-11-19 14:37:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:37:59,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 304 [2021-11-19 14:37:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:37:59,138 INFO L225 Difference]: With dead ends: 920 [2021-11-19 14:37:59,139 INFO L226 Difference]: Without dead ends: 540 [2021-11-19 14:37:59,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1160 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 14:37:59,143 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 261 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 221 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:37:59,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2552 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 111 Invalid, 6 Unknown, 0 Unchecked, 20.8s Time] [2021-11-19 14:37:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-19 14:37:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 450. [2021-11-19 14:37:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 264 states have internal predecessors, (304), 158 states have call successors, (158), 28 states have call predecessors, (158), 30 states have return successors, (165), 157 states have call predecessors, (165), 157 states have call successors, (165) [2021-11-19 14:37:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 627 transitions. [2021-11-19 14:37:59,175 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 627 transitions. Word has length 304 [2021-11-19 14:37:59,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:37:59,176 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 627 transitions. [2021-11-19 14:37:59,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-19 14:37:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 627 transitions. [2021-11-19 14:37:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-19 14:37:59,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:37:59,179 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:37:59,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:59,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:37:59,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:37:59,593 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:37:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:37:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2090771040, now seen corresponding path program 1 times [2021-11-19 14:37:59,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:37:59,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377251209] [2021-11-19 14:37:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:37:59,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:37:59,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:37:59,596 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:37:59,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:38:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:38:00,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:00,801 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 [2021-11-19 14:38:01,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:01,798 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 [2021-11-19 14:38:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 14:38:05,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:10,120 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 [2021-11-19 14:38:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:38:10,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:10,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377251209] [2021-11-19 14:38:10,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377251209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:10,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1304698399] [2021-11-19 14:38:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:10,843 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:10,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:38:10,843 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:38:10,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 14:38:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:13,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:38:13,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:14,476 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 [2021-11-19 14:38:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-19 14:38:16,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:17,955 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 [2021-11-19 14:38:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:38:18,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1304698399] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:38:18,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:38:18,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22, 20, 10] total 54 [2021-11-19 14:38:18,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669394642] [2021-11-19 14:38:18,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:18,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:38:18,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:18,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:38:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 14:38:18,662 INFO L87 Difference]: Start difference. First operand 450 states and 627 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-19 14:38:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:19,189 INFO L93 Difference]: Finished difference Result 859 states and 1206 transitions. [2021-11-19 14:38:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:38:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 310 [2021-11-19 14:38:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:19,195 INFO L225 Difference]: With dead ends: 859 [2021-11-19 14:38:19,195 INFO L226 Difference]: Without dead ends: 463 [2021-11-19 14:38:19,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1173 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=209, Invalid=2761, Unknown=0, NotChecked=0, Total=2970 [2021-11-19 14:38:19,200 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 37 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:19,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2772 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 75 Unchecked, 0.3s Time] [2021-11-19 14:38:19,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-19 14:38:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-11-19 14:38:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 273 states have (on average 1.1684981684981686) internal successors, (319), 276 states have internal predecessors, (319), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (166), 157 states have call predecessors, (166), 157 states have call successors, (166) [2021-11-19 14:38:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 643 transitions. [2021-11-19 14:38:19,234 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 643 transitions. Word has length 310 [2021-11-19 14:38:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:19,235 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 643 transitions. [2021-11-19 14:38:19,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 10 states have internal predecessors, (129), 5 states have call successors, (38), 3 states have call predecessors, (38), 4 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-19 14:38:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 643 transitions. [2021-11-19 14:38:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-19 14:38:19,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:19,238 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:19,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:19,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:19,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:38:19,649 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2134548382, now seen corresponding path program 1 times [2021-11-19 14:38:19,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:19,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025855403] [2021-11-19 14:38:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:19,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:19,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:19,652 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:19,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:38:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:20,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:38:20,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:20,864 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 [2021-11-19 14:38:22,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:22,060 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 [2021-11-19 14:38:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 14:38:25,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:30,476 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 [2021-11-19 14:38:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:38:31,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:31,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025855403] [2021-11-19 14:38:31,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025855403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:31,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1047754376] [2021-11-19 14:38:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:31,192 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:31,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:38:31,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:38:31,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 14:38:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:31,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:38:31,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-19 14:38:32,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2021-11-19 14:38:33,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1047754376] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:38:33,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:38:33,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22, 20, 4] total 41 [2021-11-19 14:38:33,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80296426] [2021-11-19 14:38:33,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:33,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:38:33,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:38:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:38:33,249 INFO L87 Difference]: Start difference. First operand 463 states and 643 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:38:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:33,439 INFO L93 Difference]: Finished difference Result 862 states and 1232 transitions. [2021-11-19 14:38:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:38:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 310 [2021-11-19 14:38:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:33,444 INFO L225 Difference]: With dead ends: 862 [2021-11-19 14:38:33,445 INFO L226 Difference]: Without dead ends: 469 [2021-11-19 14:38:33,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1186 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:38:33,453 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 20 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:33,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1714 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:38:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-19 14:38:33,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2021-11-19 14:38:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 268 states have (on average 1.1679104477611941) internal successors, (313), 270 states have internal predecessors, (313), 158 states have call successors, (158), 29 states have call predecessors, (158), 30 states have return successors, (165), 157 states have call predecessors, (165), 157 states have call successors, (165) [2021-11-19 14:38:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 636 transitions. [2021-11-19 14:38:33,485 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 636 transitions. Word has length 310 [2021-11-19 14:38:33,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:33,486 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 636 transitions. [2021-11-19 14:38:33,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:38:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 636 transitions. [2021-11-19 14:38:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-19 14:38:33,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:33,489 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:33,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:33,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:33,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:33,904 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:33,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash -165979994, now seen corresponding path program 1 times [2021-11-19 14:38:33,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:33,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847114756] [2021-11-19 14:38:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:33,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:33,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:33,907 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:33,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:38:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:38:34,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:35,076 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 [2021-11-19 14:38:36,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:36,130 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 [2021-11-19 14:38:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 14:38:39,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:44,600 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 [2021-11-19 14:38:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:38:45,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:38:45,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847114756] [2021-11-19 14:38:45,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847114756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:38:45,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [564816431] [2021-11-19 14:38:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:45,325 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:45,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:38:45,326 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:38:45,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-19 14:38:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:46,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:38:46,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-19 14:38:47,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:38:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-11-19 14:38:48,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [564816431] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:38:48,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:38:48,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22, 20, 10] total 48 [2021-11-19 14:38:48,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964007097] [2021-11-19 14:38:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:38:48,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:38:48,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:38:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:38:48,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:38:48,467 INFO L87 Difference]: Start difference. First operand 457 states and 636 transitions. Second operand has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 14:38:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:38:49,422 INFO L93 Difference]: Finished difference Result 859 states and 1241 transitions. [2021-11-19 14:38:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:38:49,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 314 [2021-11-19 14:38:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:38:49,427 INFO L225 Difference]: With dead ends: 859 [2021-11-19 14:38:49,428 INFO L226 Difference]: Without dead ends: 467 [2021-11-19 14:38:49,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1258 GetRequests, 1195 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 14:38:49,432 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 19 mSDsluCounter, 4467 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5031 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:38:49,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5031 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:38:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-19 14:38:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2021-11-19 14:38:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 274 states have (on average 1.1642335766423357) internal successors, (319), 277 states have internal predecessors, (319), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (179), 157 states have call predecessors, (179), 157 states have call successors, (179) [2021-11-19 14:38:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 656 transitions. [2021-11-19 14:38:49,464 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 656 transitions. Word has length 314 [2021-11-19 14:38:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:38:49,465 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 656 transitions. [2021-11-19 14:38:49,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 14:38:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 656 transitions. [2021-11-19 14:38:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-19 14:38:49,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:38:49,468 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:38:49,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:38:49,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-19 14:38:49,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:38:49,881 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:38:49,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:38:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2071134707, now seen corresponding path program 1 times [2021-11-19 14:38:49,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:38:49,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670514753] [2021-11-19 14:38:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:38:49,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:38:49,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:38:49,886 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:38:49,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:38:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:38:50,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:38:50,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:38:51,084 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 [2021-11-19 14:38:52,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:38:52,192 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 [2021-11-19 14:38:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 14:38:55,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:39:00,905 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 [2021-11-19 14:39:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:39:01,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:39:01,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670514753] [2021-11-19 14:39:01,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670514753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:39:01,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [249754931] [2021-11-19 14:39:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:39:01,642 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:39:01,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:39:01,643 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:39:01,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 14:39:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:39:02,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:39:02,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:39:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-19 14:39:04,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:39:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-19 14:39:06,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [249754931] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:39:06,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:39:06,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 20, 5] total 44 [2021-11-19 14:39:06,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148529539] [2021-11-19 14:39:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:39:06,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:39:06,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:39:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:39:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 14:39:06,299 INFO L87 Difference]: Start difference. First operand 464 states and 656 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:39:08,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:10,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:13,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:14,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:16,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:18,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:20,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:22,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:24,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:26,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:29,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:31,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:33,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:35,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:37,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:38,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:39:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:39:38,832 INFO L93 Difference]: Finished difference Result 882 states and 1318 transitions. [2021-11-19 14:39:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:39:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 316 [2021-11-19 14:39:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:39:38,844 INFO L225 Difference]: With dead ends: 882 [2021-11-19 14:39:38,844 INFO L226 Difference]: Without dead ends: 482 [2021-11-19 14:39:38,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1206 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=164, Invalid=1816, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 14:39:38,849 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 34 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:39:38,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 2200 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 13 Unknown, 46 Unchecked, 32.0s Time] [2021-11-19 14:39:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-19 14:39:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 471. [2021-11-19 14:39:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 281 states have (on average 1.1637010676156583) internal successors, (327), 284 states have internal predecessors, (327), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (179), 157 states have call predecessors, (179), 157 states have call successors, (179) [2021-11-19 14:39:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 664 transitions. [2021-11-19 14:39:38,891 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 664 transitions. Word has length 316 [2021-11-19 14:39:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:39:38,892 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 664 transitions. [2021-11-19 14:39:38,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:39:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 664 transitions. [2021-11-19 14:39:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-19 14:39:38,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:39:38,895 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:39:38,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 14:39:39,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 14:39:39,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:39:39,316 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:39:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:39:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash -174155249, now seen corresponding path program 1 times [2021-11-19 14:39:39,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:39:39,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183955179] [2021-11-19 14:39:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:39:39,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:39:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:39:39,320 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:39:39,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 14:39:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:39:40,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:39:40,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:39:40,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:39:41,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:41,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-11-19 14:39:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 14:39:45,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:39:50,488 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 [2021-11-19 14:39:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:39:51,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:39:51,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183955179] [2021-11-19 14:39:51,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183955179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:39:51,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1983205269] [2021-11-19 14:39:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:39:51,258 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:39:51,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:39:51,259 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:39:51,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-19 14:39:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:39:51,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:39:51,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:39:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-19 14:39:52,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:39:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2021-11-19 14:39:53,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1983205269] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:39:53,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:39:53,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22, 20, 4] total 41 [2021-11-19 14:39:53,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24524993] [2021-11-19 14:39:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:39:53,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:39:53,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:39:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:39:53,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 14:39:53,362 INFO L87 Difference]: Start difference. First operand 471 states and 664 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:39:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:39:53,536 INFO L93 Difference]: Finished difference Result 885 states and 1293 transitions. [2021-11-19 14:39:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:39:53,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 316 [2021-11-19 14:39:53,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:39:53,544 INFO L225 Difference]: With dead ends: 885 [2021-11-19 14:39:53,545 INFO L226 Difference]: Without dead ends: 480 [2021-11-19 14:39:53,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1210 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:39:53,550 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 34 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:39:53,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1705 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:39:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-19 14:39:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 467. [2021-11-19 14:39:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 280 states have internal predecessors, (320), 158 states have call successors, (158), 29 states have call predecessors, (158), 31 states have return successors, (179), 157 states have call predecessors, (179), 157 states have call successors, (179) [2021-11-19 14:39:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 657 transitions. [2021-11-19 14:39:53,581 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 657 transitions. Word has length 316 [2021-11-19 14:39:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:39:53,582 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 657 transitions. [2021-11-19 14:39:53,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-19 14:39:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 657 transitions. [2021-11-19 14:39:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-19 14:39:53,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:39:53,585 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:39:53,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 14:39:53,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-11-19 14:39:54,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:39:54,008 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:39:54,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:39:54,008 INFO L85 PathProgramCache]: Analyzing trace with hash 252399249, now seen corresponding path program 1 times [2021-11-19 14:39:54,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:39:54,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030279149] [2021-11-19 14:39:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:39:54,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:39:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:39:54,011 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:39:54,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 14:39:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:39:55,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:39:55,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:39:55,278 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 [2021-11-19 14:39:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:39:56,302 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 [2021-11-19 14:39:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 14:39:59,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:40:05,597 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 [2021-11-19 14:40:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-19 14:40:06,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:40:06,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030279149] [2021-11-19 14:40:06,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030279149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:40:06,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [797115431] [2021-11-19 14:40:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:40:06,403 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:40:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:40:06,404 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:40:06,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-11-19 14:40:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:40:09,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 14:40:09,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:40:10,154 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 [2021-11-19 14:40:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-19 14:40:14,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:40:16,781 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 [2021-11-19 14:40:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-11-19 14:40:17,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [797115431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:40:17,542 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:40:17,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [22, 20] total 56 [2021-11-19 14:40:17,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103247720] [2021-11-19 14:40:17,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:40:17,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 14:40:17,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:40:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 14:40:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2873, Unknown=0, NotChecked=0, Total=3080 [2021-11-19 14:40:17,546 INFO L87 Difference]: Start difference. First operand 467 states and 657 transitions. Second operand has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 19 states have internal predecessors, (192), 10 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 12 states have call predecessors, (60), 10 states have call successors, (60) [2021-11-19 14:40:19,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:21,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:23,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:25,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:27,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:29,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:37,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:38,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:40,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:43,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:45,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:47,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:50,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:52,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:54,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:56,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:40:58,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:00,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:02,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:03,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:06,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:08,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:10,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:12,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:14,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:16,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:17,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:19,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:21,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:23,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:25,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:27,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:29,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:31,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:33,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:36,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:38,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:40,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:42,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:44,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:45,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:47,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:41:49,755 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 [] [2021-11-19 14:42:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:01,228 INFO L93 Difference]: Finished difference Result 1326 states and 1979 transitions. [2021-11-19 14:42:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 14:42:01,230 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 19 states have internal predecessors, (192), 10 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 12 states have call predecessors, (60), 10 states have call successors, (60) Word has length 316 [2021-11-19 14:42:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:01,239 INFO L225 Difference]: With dead ends: 1326 [2021-11-19 14:42:01,240 INFO L226 Difference]: Without dead ends: 920 [2021-11-19 14:42:01,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1183 SyntacticMatches, 24 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=234, Invalid=3306, Unknown=0, NotChecked=0, Total=3540 [2021-11-19 14:42:01,244 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 267 mSDsluCounter, 9331 mSDsCounter, 0 mSdLazyCounter, 3733 mSolverCounterSat, 189 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 10371 SdHoareTripleChecker+Invalid, 5047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3733 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 1094 IncrementalHoareTripleChecker+Unchecked, 102.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:01,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 10371 Invalid, 5047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3733 Invalid, 31 Unknown, 1094 Unchecked, 102.7s Time] [2021-11-19 14:42:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-19 14:42:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 653. [2021-11-19 14:42:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 399 states have (on average 1.1929824561403508) internal successors, (476), 406 states have internal predecessors, (476), 213 states have call successors, (213), 36 states have call predecessors, (213), 40 states have return successors, (259), 210 states have call predecessors, (259), 212 states have call successors, (259) [2021-11-19 14:42:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 948 transitions. [2021-11-19 14:42:01,336 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 948 transitions. Word has length 316 [2021-11-19 14:42:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:01,337 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 948 transitions. [2021-11-19 14:42:01,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.142857142857142) internal successors, (192), 19 states have internal predecessors, (192), 10 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 12 states have call predecessors, (60), 10 states have call successors, (60) [2021-11-19 14:42:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 948 transitions. [2021-11-19 14:42:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-19 14:42:01,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:01,340 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:01,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2021-11-19 14:42:01,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:01,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:42:01,761 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 740543245, now seen corresponding path program 1 times [2021-11-19 14:42:01,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:01,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310754693] [2021-11-19 14:42:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:01,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:01,765 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:01,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 14:42:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:02,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:42:02,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:03,019 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 [2021-11-19 14:42:04,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:42:04,132 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 [2021-11-19 14:42:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 14:42:07,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:13,473 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 [2021-11-19 14:42:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-11-19 14:42:14,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:14,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310754693] [2021-11-19 14:42:14,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310754693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:42:14,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1434175837] [2021-11-19 14:42:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:14,297 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:14,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:42:14,297 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:42:14,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 14:42:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:15,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:42:15,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-19 14:42:16,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2021-11-19 14:42:17,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1434175837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:42:17,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:42:17,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [22, 20] total 48 [2021-11-19 14:42:17,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265395573] [2021-11-19 14:42:17,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:42:17,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:42:17,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:42:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:42:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 14:42:17,639 INFO L87 Difference]: Start difference. First operand 653 states and 948 transitions. Second operand has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-19 14:42:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:42:18,597 INFO L93 Difference]: Finished difference Result 1152 states and 1704 transitions. [2021-11-19 14:42:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:42:18,598 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 320 [2021-11-19 14:42:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:42:18,605 INFO L225 Difference]: With dead ends: 1152 [2021-11-19 14:42:18,605 INFO L226 Difference]: Without dead ends: 644 [2021-11-19 14:42:18,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1221 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2021-11-19 14:42:18,610 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 21 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:42:18,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4457 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:42:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-11-19 14:42:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 638. [2021-11-19 14:42:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 385 states have (on average 1.1896103896103896) internal successors, (458), 392 states have internal predecessors, (458), 213 states have call successors, (213), 35 states have call predecessors, (213), 39 states have return successors, (256), 210 states have call predecessors, (256), 212 states have call successors, (256) [2021-11-19 14:42:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 927 transitions. [2021-11-19 14:42:18,665 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 927 transitions. Word has length 320 [2021-11-19 14:42:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:42:18,666 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 927 transitions. [2021-11-19 14:42:18,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-19 14:42:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 927 transitions. [2021-11-19 14:42:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-19 14:42:18,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:42:18,669 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:42:18,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 14:42:18,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2021-11-19 14:42:19,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:19,092 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:42:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:42:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 324762242, now seen corresponding path program 1 times [2021-11-19 14:42:19,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:42:19,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566679622] [2021-11-19 14:42:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:19,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:42:19,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:42:19,095 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:42:19,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 14:42:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:20,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 14:42:20,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:20,407 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 [2021-11-19 14:42:21,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:42:21,543 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 [2021-11-19 14:42:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 312 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 14:42:25,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:31,068 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 [2021-11-19 14:42:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2021-11-19 14:42:31,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:42:31,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566679622] [2021-11-19 14:42:31,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566679622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:42:31,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [208728864] [2021-11-19 14:42:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:31,925 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:42:31,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:42:31,926 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:42:31,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-19 14:42:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:35,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:42:35,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:35,774 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 [2021-11-19 14:42:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 340 proven. 6 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 14:42:44,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:42:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2021-11-19 14:42:52,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [208728864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:42:52,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922176127] [2021-11-19 14:42:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:42:52,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:42:52,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:42:52,070 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:42:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07ad9c7d-dba5-4d87-b09a-86ca4dcf3aae/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-19 14:42:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:42:53,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:42:53,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:42:53,505 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 [2021-11-19 14:42:54,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:42:54,630 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 [2021-11-19 14:42:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 312 proven. 5 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 14:42:57,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:43:16,997 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 [2021-11-19 14:43:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-11-19 14:43:18,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922176127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:43:18,652 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:43:18,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 13, 10, 17, 15] total 71 [2021-11-19 14:43:18,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147094016] [2021-11-19 14:43:18,653 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:43:18,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-19 14:43:18,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:43:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-19 14:43:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=4698, Unknown=6, NotChecked=0, Total=4970 [2021-11-19 14:43:18,657 INFO L87 Difference]: Start difference. First operand 638 states and 927 transitions. Second operand has 71 states, 68 states have (on average 5.897058823529412) internal successors, (401), 60 states have internal predecessors, (401), 28 states have call successors, (131), 5 states have call predecessors, (131), 21 states have return successors, (135), 33 states have call predecessors, (135), 28 states have call successors, (135) [2021-11-19 14:43:20,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:22,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:24,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:26,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:28,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:30,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:32,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:34,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:36,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:38,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:40,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:42,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:44,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:46,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:48,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:50,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:52,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:43:54,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:14,671 WARN L227 SmtUtils]: Spent 10.15s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:45:23,700 WARN L227 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:45:28,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:30,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:32,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:34,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:36,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:38,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:40,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:42,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:44,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:46,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:48,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:50,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:52,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:54,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:56,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:58,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:03,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:05,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:07,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:09,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:11,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:13,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:15,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:17,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:19,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:21,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:23,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:27,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:29,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:31,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:34,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:36,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:38,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:40,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:42,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:44,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:46,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:48,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:50,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:52,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:54,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:56,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:58,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:00,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:03,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:05,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:07,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:09,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:11,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:13,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:14,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:16,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:18,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:20,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:22,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:23,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:25,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:27,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:29,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:31,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:33,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:35,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:37,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:40,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:42,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:44,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:46,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:48,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:50,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:52,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:54,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:56,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:58,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:00,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:02,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:03,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:04,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:07,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:09,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:11,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:13,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:15,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:16,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:18,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:20,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:22,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:24,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:26,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:28,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:30,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:32,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:34,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:36,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:38,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:40,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:42,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:44,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:46,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:48,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:50,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:52,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:54,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:48:57,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []