./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:20:19,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:20:19,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:20:19,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:20:19,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:20:19,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:20:19,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:20:19,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:20:19,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:20:19,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:20:19,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:20:19,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:20:19,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:20:19,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:20:19,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:20:19,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:20:19,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:20:19,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:20:19,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:20:19,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:20:19,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:20:19,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:20:19,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:20:19,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:20:19,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:20:19,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:20:19,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:20:19,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:20:19,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:20:19,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:20:19,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:20:19,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:20:19,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:20:19,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:20:19,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:20:19,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:20:19,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:20:19,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:20:19,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:20:19,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:20:19,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:20:19,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:20:19,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:20:19,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:20:19,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:20:19,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:20:19,992 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:20:19,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:20:19,992 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:20:19,992 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:20:19,998 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:20:19,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:20:20,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:20:20,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:20:20,000 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:20:20,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:20:20,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:20:20,001 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:20:20,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:20:20,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:20:20,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:20:20,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:20:20,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:20:20,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:20:20,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:20:20,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:20:20,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:20:20,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:20:20,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:20:20,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:20:20,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:20,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:20:20,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:20:20,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:20:20,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:20:20,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:20:20,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:20:20,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:20:20,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:20:20,009 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_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2021-11-12 23:20:20,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:20:20,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:20:20,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:20:20,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:20:20,309 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:20:20,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-12 23:20:20,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/fae05d841/71fc9e060e0a4c9fbb6f5c1523334618/FLAGcc3ee78ef [2021-11-12 23:20:21,360 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:20:21,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-12 23:20:21,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/fae05d841/71fc9e060e0a4c9fbb6f5c1523334618/FLAGcc3ee78ef [2021-11-12 23:20:21,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/fae05d841/71fc9e060e0a4c9fbb6f5c1523334618 [2021-11-12 23:20:21,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:20:21,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:20:21,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:21,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:20:21,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:20:21,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:21" (1/1) ... [2021-11-12 23:20:21,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f7f2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:21, skipping insertion in model container [2021-11-12 23:20:21,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:21" (1/1) ... [2021-11-12 23:20:21,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:20:22,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:22,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-12 23:20:22,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-12 23:20:22,332 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:20:22,338 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:20:23,286 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:20:23,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,377 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,378 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,787 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:20:23,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:20:23,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:20:23,792 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:20:23,793 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:20:23,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:20:23,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:20:23,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:20:23,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:20:23,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:20:23,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:23,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:24,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:24,101 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:20:24,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@535be903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:24, skipping insertion in model container [2021-11-12 23:20:24,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:24,104 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:20:24,107 INFO L158 Benchmark]: Toolchain (without parser) took 2202.45ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 74.4MB in the beginning and 101.3MB in the end (delta: -26.9MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-11-12 23:20:24,108 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:20:24,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2199.88ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 74.4MB in the beginning and 101.3MB in the end (delta: -26.9MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-11-12 23:20:24,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2199.88ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 74.4MB in the beginning and 101.3MB in the end (delta: -26.9MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:20:26,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:20:26,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:20:26,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:20:26,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:20:26,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:20:26,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:20:26,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:20:26,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:20:26,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:20:26,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:20:26,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:20:26,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:20:26,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:20:26,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:20:26,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:20:26,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:20:26,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:20:26,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:20:26,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:20:26,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:20:26,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:20:26,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:20:26,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:20:26,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:20:26,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:20:26,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:20:26,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:20:26,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:20:26,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:20:26,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:20:26,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:20:26,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:20:26,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:20:26,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:20:26,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:20:26,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:20:26,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:20:26,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:20:26,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:20:26,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:20:26,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:20:26,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:20:26,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:20:26,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:20:26,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:20:26,662 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:20:26,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:20:26,662 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:20:26,663 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:20:26,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:20:26,663 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:20:26,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:20:26,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:20:26,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:20:26,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:20:26,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:20:26,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:20:26,667 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:20:26,667 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:20:26,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:20:26,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:20:26,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:20:26,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:20:26,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:20:26,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:20:26,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:26,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:20:26,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:20:26,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:20:26,669 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:20:26,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:20:26,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:20:26,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:20:26,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:20:26,671 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_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2021-11-12 23:20:27,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:20:27,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:20:27,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:20:27,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:20:27,123 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:20:27,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-12 23:20:27,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/20e5a22cf/b4afd4e1b44d4c4a8b242611a72b02a9/FLAG03ed9325d [2021-11-12 23:20:28,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:20:28,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-12 23:20:28,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/20e5a22cf/b4afd4e1b44d4c4a8b242611a72b02a9/FLAG03ed9325d [2021-11-12 23:20:28,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/data/20e5a22cf/b4afd4e1b44d4c4a8b242611a72b02a9 [2021-11-12 23:20:28,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:20:28,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:20:28,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:28,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:20:28,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:20:28,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:28" (1/1) ... [2021-11-12 23:20:28,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7b08c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:28, skipping insertion in model container [2021-11-12 23:20:28,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:20:28" (1/1) ... [2021-11-12 23:20:28,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:20:28,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:28,950 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-12 23:20:28,956 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-12 23:20:28,980 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:20:28,985 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:20:30,029 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:20:30,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,620 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:20:30,621 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:20:30,623 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:20:30,624 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:20:30,625 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:20:30,626 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:20:30,626 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:20:30,627 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:20:30,628 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:20:30,628 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:20:30,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:30,873 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:20:30,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:20:30,921 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-12 23:20:30,923 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-12 23:20:30,925 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:20:30,927 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:20:30,965 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:20:30,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:30,992 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:20:31,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:20:31,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:20:31,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:20:31,074 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:20:31,084 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:20:31,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:20:31,085 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:20:31,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:20:31,086 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:20:31,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:31,188 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:20:31,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2021-11-12 23:20:31,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2021-11-12 23:20:31,204 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:20:31,205 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:20:31,234 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:20:31,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,247 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,248 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:20:31,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:20:31,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:20:31,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:20:31,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:20:31,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:20:31,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:20:31,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:20:31,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:20:31,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:20:31,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:20:31,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:20:31,817 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:20:31,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31 WrapperNode [2021-11-12 23:20:31,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:20:31,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:20:31,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:20:31,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:20:31,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:31,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:20:32,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:20:32,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:20:32,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:20:32,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:20:32,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:20:32,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:20:32,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:20:32,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (1/1) ... [2021-11-12 23:20:32,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:20:32,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:20:32,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:20:32,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:20:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-12 23:20:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-12 23:20:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:20:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-12 23:20:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-12 23:20:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-12 23:20:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-12 23:20:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:20:32,281 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:20:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:20:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:20:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:20:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:20:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:20:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:20:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:20:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:20:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-12 23:20:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-12 23:20:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:20:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:20:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:20:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:20:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:20:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:20:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:20:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:20:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:20:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 23:20:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 23:20:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-12 23:20:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-12 23:20:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-12 23:20:32,285 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-12 23:20:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:20:32,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:20:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:20:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 23:20:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:20:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:20:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:20:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:20:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:20:32,287 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:20:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 23:20:32,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 23:20:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-11-12 23:20:32,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-11-12 23:20:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-12 23:20:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-12 23:20:45,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:20:45,071 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 23:20:45,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:20:45 BoogieIcfgContainer [2021-11-12 23:20:45,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:20:45,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:20:45,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:20:45,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:20:45,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:20:28" (1/3) ... [2021-11-12 23:20:45,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6596e16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:20:45, skipping insertion in model container [2021-11-12 23:20:45,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:20:31" (2/3) ... [2021-11-12 23:20:45,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6596e16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:20:45, skipping insertion in model container [2021-11-12 23:20:45,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:20:45" (3/3) ... [2021-11-12 23:20:45,082 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2021-11-12 23:20:45,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:20:45,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:20:45,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:20:45,141 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:20:45,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:20:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-12 23:20:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 23:20:45,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:45,180 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:45,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2080692148, now seen corresponding path program 1 times [2021-11-12 23:20:45,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:45,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427456593] [2021-11-12 23:20:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:45,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:45,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:45,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:45,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:20:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:49,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:20:49,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-12 23:20:49,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-12 23:20:50,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:50,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427456593] [2021-11-12 23:20:50,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427456593] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:50,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:20:50,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:20:50,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424190894] [2021-11-12 23:20:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:50,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:20:50,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:20:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:20:50,280 INFO L87 Difference]: Start difference. First operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 23:20:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:50,364 INFO L93 Difference]: Finished difference Result 373 states and 526 transitions. [2021-11-12 23:20:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:20:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2021-11-12 23:20:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:50,387 INFO L225 Difference]: With dead ends: 373 [2021-11-12 23:20:50,388 INFO L226 Difference]: Without dead ends: 187 [2021-11-12 23:20:50,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:20:50,403 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:50,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 6.12ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:20:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-12 23:20:50,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-12 23:20:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 120 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-12 23:20:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2021-11-12 23:20:50,464 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 118 [2021-11-12 23:20:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:50,466 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2021-11-12 23:20:50,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 23:20:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2021-11-12 23:20:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 23:20:50,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:50,472 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:50,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:50,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:50,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 440490954, now seen corresponding path program 1 times [2021-11-12 23:20:50,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:50,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825513872] [2021-11-12 23:20:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:50,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:50,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:50,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:50,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:20:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:54,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:54,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-12 23:20:55,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-12 23:20:55,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:55,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825513872] [2021-11-12 23:20:55,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825513872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:55,703 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:55,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-12 23:20:55,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328626266] [2021-11-12 23:20:55,703 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:55,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:20:55,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:20:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:20:55,706 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:20:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:56,023 INFO L93 Difference]: Finished difference Result 337 states and 440 transitions. [2021-11-12 23:20:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:20:56,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 118 [2021-11-12 23:20:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:56,028 INFO L225 Difference]: With dead ends: 337 [2021-11-12 23:20:56,028 INFO L226 Difference]: Without dead ends: 187 [2021-11-12 23:20:56,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:20:56,031 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 43 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:56,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1063 Invalid, 47 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 254.20ms Time] [2021-11-12 23:20:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-12 23:20:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-12 23:20:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 120 states have internal predecessors, (143), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-12 23:20:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2021-11-12 23:20:56,056 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 118 [2021-11-12 23:20:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:56,057 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2021-11-12 23:20:56,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:20:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2021-11-12 23:20:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-12 23:20:56,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:56,061 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-11-12 23:20:56,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:20:56,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:56,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:20:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:56,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1705196580, now seen corresponding path program 1 times [2021-11-12 23:20:56,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:56,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535733028] [2021-11-12 23:20:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:56,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:56,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:56,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:21:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:00,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:21:00,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-12 23:21:00,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 23:21:01,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:01,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535733028] [2021-11-12 23:21:01,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535733028] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:01,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:01,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-12 23:21:01,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252927868] [2021-11-12 23:21:01,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:01,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:21:01,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:21:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:21:01,485 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:21:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:02,220 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2021-11-12 23:21:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:21:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 126 [2021-11-12 23:21:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:02,225 INFO L225 Difference]: With dead ends: 356 [2021-11-12 23:21:02,225 INFO L226 Difference]: Without dead ends: 189 [2021-11-12 23:21:02,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:21:02,228 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 77 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 531.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 647.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:02,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1300 Invalid, 149 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 647.50ms Time] [2021-11-12 23:21:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-12 23:21:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-11-12 23:21:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.2) internal successors, (144), 122 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-11-12 23:21:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2021-11-12 23:21:02,252 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 126 [2021-11-12 23:21:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:02,252 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2021-11-12 23:21:02,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:21:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2021-11-12 23:21:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-12 23:21:02,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:02,257 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-11-12 23:21:02,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:02,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:02,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash -371731420, now seen corresponding path program 1 times [2021-11-12 23:21:02,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:02,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471031125] [2021-11-12 23:21:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:02,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:02,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:02,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:02,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:21:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:06,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:21:06,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-12 23:21:07,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-12 23:21:07,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:07,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471031125] [2021-11-12 23:21:07,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471031125] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:07,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:07,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:21:07,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114033196] [2021-11-12 23:21:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:07,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:21:07,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:21:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:07,606 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:21:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:07,705 INFO L93 Difference]: Finished difference Result 344 states and 467 transitions. [2021-11-12 23:21:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:21:07,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-11-12 23:21:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:07,709 INFO L225 Difference]: With dead ends: 344 [2021-11-12 23:21:07,709 INFO L226 Difference]: Without dead ends: 194 [2021-11-12 23:21:07,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:21:07,711 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:07,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 713 Invalid, 13 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 70.58ms Time] [2021-11-12 23:21:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-12 23:21:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2021-11-12 23:21:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 124 states have internal predecessors, (146), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-11-12 23:21:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2021-11-12 23:21:07,733 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 141 [2021-11-12 23:21:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:07,734 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2021-11-12 23:21:07,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:21:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2021-11-12 23:21:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-12 23:21:07,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:07,737 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2021-11-12 23:21:07,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:07,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:07,951 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash 120894754, now seen corresponding path program 1 times [2021-11-12 23:21:07,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:07,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942253627] [2021-11-12 23:21:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:07,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:07,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:07,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:07,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:21:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:12,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:21:12,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-12 23:21:12,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-12 23:21:13,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:13,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942253627] [2021-11-12 23:21:13,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942253627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:13,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:13,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:21:13,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640607101] [2021-11-12 23:21:13,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:13,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:21:13,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:21:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:21:13,325 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-12 23:21:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:13,874 INFO L93 Difference]: Finished difference Result 346 states and 457 transitions. [2021-11-12 23:21:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:21:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 141 [2021-11-12 23:21:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:13,878 INFO L225 Difference]: With dead ends: 346 [2021-11-12 23:21:13,878 INFO L226 Difference]: Without dead ends: 191 [2021-11-12 23:21:13,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:21:13,881 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 65 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 409.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 467.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:13,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1248 Invalid, 84 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 467.28ms Time] [2021-11-12 23:21:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-12 23:21:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-11-12 23:21:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-11-12 23:21:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2021-11-12 23:21:13,900 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 141 [2021-11-12 23:21:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:13,901 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2021-11-12 23:21:13,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-12 23:21:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2021-11-12 23:21:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-12 23:21:13,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:13,904 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:13,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:14,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:14,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1915037087, now seen corresponding path program 1 times [2021-11-12 23:21:14,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:14,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715997339] [2021-11-12 23:21:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:14,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:14,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:14,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:21:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:18,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:21:18,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:21:19,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-12 23:21:19,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:19,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715997339] [2021-11-12 23:21:19,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715997339] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:21:19,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:21:19,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2021-11-12 23:21:19,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436521751] [2021-11-12 23:21:19,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:19,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:21:19,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:21:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:21:19,927 INFO L87 Difference]: Start difference. First operand 191 states and 250 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-12 23:21:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:21:20,997 INFO L93 Difference]: Finished difference Result 359 states and 474 transitions. [2021-11-12 23:21:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:21:21,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 157 [2021-11-12 23:21:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:21,008 INFO L225 Difference]: With dead ends: 359 [2021-11-12 23:21:21,009 INFO L226 Difference]: Without dead ends: 191 [2021-11-12 23:21:21,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:21:21,011 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 116 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 823.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.40ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 950.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:21,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1385 Invalid, 202 Unknown, 0 Unchecked, 6.40ms Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 950.39ms Time] [2021-11-12 23:21:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-12 23:21:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-11-12 23:21:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2021-11-12 23:21:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 249 transitions. [2021-11-12 23:21:21,025 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 249 transitions. Word has length 157 [2021-11-12 23:21:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:21,026 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 249 transitions. [2021-11-12 23:21:21,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-12 23:21:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 249 transitions. [2021-11-12 23:21:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 23:21:21,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:21,030 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:21:21,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:21:21,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:21,249 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:21:21,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 725110269, now seen corresponding path program 2 times [2021-11-12 23:21:21,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:21,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628626719] [2021-11-12 23:21:21,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:21:21,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:21,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:21,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad02614f-1eff-4ecb-b987-66ab35694f87/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process