./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:37:34,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:37:34,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:37:34,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:37:34,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:37:34,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:37:34,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:37:34,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:37:34,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:37:34,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:37:34,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:37:34,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:37:34,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:37:34,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:37:34,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:37:34,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:37:34,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:37:34,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:37:34,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:37:34,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:37:34,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:37:34,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:37:34,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:37:34,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:37:34,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:37:34,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:37:34,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:37:34,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:37:34,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:37:34,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:37:34,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:37:34,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:37:34,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:37:34,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:37:34,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:37:34,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:37:34,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:37:34,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:37:34,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:37:34,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:37:34,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:37:34,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:37:34,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:37:34,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:37:34,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:37:34,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:37:34,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:37:34,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:37:34,913 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:37:34,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:37:34,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:37:34,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:37:34,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:37:34,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:37:34,917 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:37:34,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:37:34,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:37:34,918 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:37:34,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:37:34,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:37:34,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:37:34,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:37:34,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:37:34,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:37:34,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:37:34,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:37:34,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:37:34,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:37:34,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:37:34,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:37:34,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:37:34,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:37:34,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:37:34,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:37:34,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:37:34,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:37:34,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:37:34,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:37:34,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:37:34,928 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 [2021-11-19 13:37:35,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:37:35,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:37:35,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:37:35,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:37:35,279 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:37:35,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-19 13:37:35,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/328b3cf7a/a408dc7c2cc3438d848b7501ab51543b/FLAGfd711f0dc [2021-11-19 13:37:36,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:37:36,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-19 13:37:36,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/328b3cf7a/a408dc7c2cc3438d848b7501ab51543b/FLAGfd711f0dc [2021-11-19 13:37:36,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/328b3cf7a/a408dc7c2cc3438d848b7501ab51543b [2021-11-19 13:37:36,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:37:36,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:37:36,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:37:36,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:37:36,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:37:36,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:37:36" (1/1) ... [2021-11-19 13:37:36,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22828b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:36, skipping insertion in model container [2021-11-19 13:37:36,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:37:36" (1/1) ... [2021-11-19 13:37:36,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:37:37,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:37:37,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-19 13:37:37,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-19 13:37:37,585 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:37:37,592 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:37:39,178 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,179 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,179 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,181 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,184 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,222 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,223 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,226 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,226 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,229 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,231 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,232 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,232 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:39,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:37:39,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:37:39,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:37:39,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:37:39,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:37:39,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:37:39,891 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:37:39,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:37:39,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:37:39,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:37:40,142 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:37:40,648 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,649 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,690 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,691 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,699 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,700 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,726 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,740 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,741 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,742 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,742 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,743 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:40,813 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:37:40,886 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:37:40,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@709127a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:40, skipping insertion in model container [2021-11-19 13:37:40,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:37:40,888 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:37:40,893 INFO L158 Benchmark]: Toolchain (without parser) took 3985.39ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 57.6MB in the beginning and 79.5MB in the end (delta: -21.9MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2021-11-19 13:37:40,894 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 56.6MB in the beginning and 56.5MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:37:40,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3981.99ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 57.3MB in the beginning and 79.5MB in the end (delta: -22.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2021-11-19 13:37:40,898 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 was 56.6MB in the beginning and 56.5MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3981.99ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 57.3MB in the beginning and 79.5MB in the end (delta: -22.2MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: 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_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:37:43,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:37:43,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:37:43,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:37:43,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:37:43,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:37:43,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:37:43,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:37:43,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:37:43,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:37:43,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:37:43,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:37:43,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:37:43,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:37:43,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:37:43,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:37:43,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:37:43,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:37:43,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:37:43,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:37:43,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:37:43,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:37:43,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:37:43,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:37:43,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:37:43,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:37:43,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:37:43,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:37:43,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:37:43,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:37:43,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:37:43,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:37:43,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:37:43,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:37:43,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:37:43,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:37:43,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:37:43,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:37:43,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:37:43,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:37:43,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:37:43,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:37:43,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:37:43,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:37:43,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:37:43,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:37:43,840 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:37:43,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:37:43,841 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:37:43,841 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:37:43,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:37:43,842 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:37:43,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:37:43,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:37:43,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:37:43,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:37:43,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:37:43,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:37:43,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:37:43,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:37:43,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:37:43,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:37:43,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:37:43,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:37:43,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:37:43,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:37:43,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:37:43,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:37:43,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:37:43,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:37:43,851 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:37:43,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:43,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:37:43,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:37:43,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:37:43,852 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_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 [2021-11-19 13:37:44,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:37:44,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:37:44,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:37:44,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:37:44,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:37:44,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-19 13:37:44,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/938500f5b/34224923f45f4d90a24a8b2c7ae5e358/FLAGa96cb0a3d [2021-11-19 13:37:45,723 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:37:45,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-19 13:37:45,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/938500f5b/34224923f45f4d90a24a8b2c7ae5e358/FLAGa96cb0a3d [2021-11-19 13:37:46,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/data/938500f5b/34224923f45f4d90a24a8b2c7ae5e358 [2021-11-19 13:37:46,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:37:46,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:37:46,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:37:46,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:37:46,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:37:46,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:37:46" (1/1) ... [2021-11-19 13:37:46,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfecace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:46, skipping insertion in model container [2021-11-19 13:37:46,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:37:46" (1/1) ... [2021-11-19 13:37:46,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:37:46,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:37:46,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-19 13:37:46,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-19 13:37:46,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:37:46,797 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:37:48,209 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,224 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,225 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,226 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,230 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,258 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,264 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,272 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,276 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,281 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,286 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,288 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:48,290 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:49,003 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:37:49,005 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:37:49,007 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:37:49,009 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:37:49,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:37:49,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:37:49,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:37:49,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:37:49,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:37:49,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:37:49,349 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:37:49,933 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:49,934 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:49,985 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:49,986 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:49,996 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:49,998 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,027 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,028 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,031 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,031 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,087 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:37:50,169 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:37:50,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:37:50,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-19 13:37:50,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-19 13:37:50,328 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:37:50,329 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:37:50,395 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,396 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,396 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,413 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,414 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,415 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,416 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,417 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,419 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,487 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:37:50,489 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:37:50,491 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:37:50,493 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:37:50,494 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:37:50,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:37:50,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:37:50,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:37:50,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:37:50,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:37:50,541 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:37:50,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,734 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,739 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,740 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,756 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,757 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,758 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,760 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,760 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,795 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:37:50,847 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:37:50,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-19 13:37:50,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-19 13:37:50,882 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:37:50,884 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:37:50,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,939 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,939 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,951 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,953 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,954 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,956 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,957 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,958 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:50,958 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:37:51,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:37:51,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:37:51,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:37:51,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:37:51,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:37:51,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:37:51,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:37:51,033 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:37:51,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:37:51,063 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:37:51,218 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,219 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,246 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,250 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,256 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,268 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,286 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,286 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,287 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,287 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:37:51,343 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:37:51,934 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:37:51,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51 WrapperNode [2021-11-19 13:37:51,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:37:51,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:37:51,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:37:51,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:37:51,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,231 INFO L137 Inliner]: procedures = 797, calls = 2447, calls flagged for inlining = 73, calls inlined = 16, statements flattened = 714 [2021-11-19 13:37:52,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:37:52,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:37:52,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:37:52,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:37:52,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:37:52,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:37:52,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:37:52,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:37:52,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (1/1) ... [2021-11-19 13:37:52,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:37:52,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:37:52,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:37:52,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:37:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2021-11-19 13:37:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2021-11-19 13:37:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 13:37:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:37:52,579 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:37:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:37:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:37:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 13:37:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 13:37:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:37:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:37:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:37:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:37:52,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:37:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:37:52,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:37:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 13:37:52,582 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 13:37:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 13:37:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 13:37:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 13:37:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:37:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 13:37:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 13:37:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 13:37:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:37:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:37:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:37:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 13:37:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 13:37:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 13:37:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 13:37:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:37:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:37:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:37:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 13:37:52,587 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 13:37:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:37:52,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:37:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:37:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:37:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:37:52,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:37:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:37:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 13:37:52,589 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 13:37:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:37:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:37:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:37:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 13:37:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 13:37:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 13:37:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 13:37:53,069 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:37:53,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:37:57,987 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:37:58,009 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:37:58,009 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:37:58,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:37:58 BoogieIcfgContainer [2021-11-19 13:37:58,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:37:58,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:37:58,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:37:58,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:37:58,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:37:46" (1/3) ... [2021-11-19 13:37:58,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:37:58, skipping insertion in model container [2021-11-19 13:37:58,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:51" (2/3) ... [2021-11-19 13:37:58,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:37:58, skipping insertion in model container [2021-11-19 13:37:58,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:37:58" (3/3) ... [2021-11-19 13:37:58,023 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clean_up_harness.i [2021-11-19 13:37:58,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:37:58,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:37:58,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:37:58,103 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:37:58,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:37:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 124 states have internal predecessors, (148), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-19 13:37:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-19 13:37:58,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:58,153 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:58,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:37:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash -896579534, now seen corresponding path program 1 times [2021-11-19 13:37:58,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:58,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12752471] [2021-11-19 13:37:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:58,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:58,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:58,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:37:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:59,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:37:59,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-19 13:37:59,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 13:38:00,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:00,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12752471] [2021-11-19 13:38:00,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12752471] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:38:00,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:38:00,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:38:00,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593635285] [2021-11-19 13:38:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:00,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:38:00,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:38:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:38:00,269 INFO L87 Difference]: Start difference. First operand has 191 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 124 states have internal predecessors, (148), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:38:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:00,385 INFO L93 Difference]: Finished difference Result 377 states and 502 transitions. [2021-11-19 13:38:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:38:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2021-11-19 13:38:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:00,410 INFO L225 Difference]: With dead ends: 377 [2021-11-19 13:38:00,411 INFO L226 Difference]: Without dead ends: 184 [2021-11-19 13:38:00,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:38:00,428 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:00,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:38:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-19 13:38:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-19 13:38:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.170940170940171) internal successors, (137), 118 states have internal predecessors, (137), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-19 13:38:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 230 transitions. [2021-11-19 13:38:00,539 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 230 transitions. Word has length 132 [2021-11-19 13:38:00,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:00,541 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 230 transitions. [2021-11-19 13:38:00,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:38:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 230 transitions. [2021-11-19 13:38:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-19 13:38:00,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:00,559 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:00,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:00,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:00,779 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1093106438, now seen corresponding path program 1 times [2021-11-19 13:38:00,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:00,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974044882] [2021-11-19 13:38:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:00,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:00,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:00,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:00,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:38:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:01,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:38:01,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-19 13:38:01,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 13:38:02,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:02,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974044882] [2021-11-19 13:38:02,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974044882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:02,428 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:02,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:38:02,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123633822] [2021-11-19 13:38:02,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:02,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:38:02,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:38:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:38:02,432 INFO L87 Difference]: Start difference. First operand 184 states and 230 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 13:38:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:02,524 INFO L93 Difference]: Finished difference Result 332 states and 416 transitions. [2021-11-19 13:38:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:38:02,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 132 [2021-11-19 13:38:02,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:02,528 INFO L225 Difference]: With dead ends: 332 [2021-11-19 13:38:02,530 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 13:38:02,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:38:02,532 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 2 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:02,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 908 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:38:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 13:38:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-19 13:38:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 121 states have internal predecessors, (140), 47 states have call successors, (47), 19 states have call predecessors, (47), 20 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2021-11-19 13:38:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2021-11-19 13:38:02,554 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 132 [2021-11-19 13:38:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:02,555 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2021-11-19 13:38:02,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 13:38:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2021-11-19 13:38:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 13:38:02,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:02,558 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:02,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:02,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:02,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1275490624, now seen corresponding path program 1 times [2021-11-19 13:38:02,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:02,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355568469] [2021-11-19 13:38:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:02,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:02,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:02,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:02,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:38:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:03,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:38:03,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 13:38:03,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-19 13:38:04,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:04,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355568469] [2021-11-19 13:38:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355568469] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:38:04,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:38:04,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:38:04,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062186600] [2021-11-19 13:38:04,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:04,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:38:04,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:38:04,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:38:04,425 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 13:38:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:04,738 INFO L93 Difference]: Finished difference Result 332 states and 415 transitions. [2021-11-19 13:38:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:38:04,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 138 [2021-11-19 13:38:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:04,745 INFO L225 Difference]: With dead ends: 332 [2021-11-19 13:38:04,745 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 13:38:04,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:38:04,747 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:04,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1031 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:38:04,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 13:38:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2021-11-19 13:38:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.1538461538461537) internal successors, (135), 118 states have internal predecessors, (135), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-19 13:38:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 228 transitions. [2021-11-19 13:38:04,782 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 228 transitions. Word has length 138 [2021-11-19 13:38:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:04,783 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 228 transitions. [2021-11-19 13:38:04,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 13:38:04,783 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 228 transitions. [2021-11-19 13:38:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-19 13:38:04,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:04,786 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:04,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:05,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:05,013 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1416298467, now seen corresponding path program 1 times [2021-11-19 13:38:05,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:05,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365113339] [2021-11-19 13:38:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:05,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:05,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:05,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:05,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:38:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:05,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:38:05,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:06,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 13:38:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 13:38:07,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:07,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 13:38:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 13:38:08,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:08,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365113339] [2021-11-19 13:38:08,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365113339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:08,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:08,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 15 [2021-11-19 13:38:08,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924886365] [2021-11-19 13:38:08,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:08,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:38:08,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:38:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:38:08,325 INFO L87 Difference]: Start difference. First operand 184 states and 228 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 13:38:10,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:12,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:14,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:16,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:18,302 INFO L93 Difference]: Finished difference Result 335 states and 421 transitions. [2021-11-19 13:38:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:38:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 143 [2021-11-19 13:38:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:18,308 INFO L225 Difference]: With dead ends: 335 [2021-11-19 13:38:18,308 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 13:38:18,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:38:18,310 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 29 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:18,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2004 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 4 Unknown, 84 Unchecked, 9.9s Time] [2021-11-19 13:38:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 13:38:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 196. [2021-11-19 13:38:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 129 states have internal predecessors, (147), 47 states have call successors, (47), 20 states have call predecessors, (47), 21 states have return successors, (50), 46 states have call predecessors, (50), 46 states have call successors, (50) [2021-11-19 13:38:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 244 transitions. [2021-11-19 13:38:18,338 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 244 transitions. Word has length 143 [2021-11-19 13:38:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:18,339 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 244 transitions. [2021-11-19 13:38:18,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 13:38:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 244 transitions. [2021-11-19 13:38:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-19 13:38:18,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:18,341 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:18,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:18,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:18,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash 317805983, now seen corresponding path program 1 times [2021-11-19 13:38:18,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:18,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813070364] [2021-11-19 13:38:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:18,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:18,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:18,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:18,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:38:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:38:19,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 13:38:19,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 13:38:20,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:20,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813070364] [2021-11-19 13:38:20,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813070364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:20,490 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:20,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:38:20,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650904162] [2021-11-19 13:38:20,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:20,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:38:20,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:20,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:38:20,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:38:20,491 INFO L87 Difference]: Start difference. First operand 196 states and 244 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 13:38:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:20,644 INFO L93 Difference]: Finished difference Result 340 states and 431 transitions. [2021-11-19 13:38:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:38:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 143 [2021-11-19 13:38:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:20,647 INFO L225 Difference]: With dead ends: 340 [2021-11-19 13:38:20,647 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 13:38:20,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:38:20,649 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 61 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:20,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 581 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:38:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 13:38:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2021-11-19 13:38:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 126 states have (on average 1.1507936507936507) internal successors, (145), 127 states have internal predecessors, (145), 48 states have call successors, (48), 20 states have call predecessors, (48), 20 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-19 13:38:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 243 transitions. [2021-11-19 13:38:20,665 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 243 transitions. Word has length 143 [2021-11-19 13:38:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:20,666 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 243 transitions. [2021-11-19 13:38:20,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 13:38:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 243 transitions. [2021-11-19 13:38:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 13:38:20,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:20,669 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:20,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:20,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:20,890 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1539976143, now seen corresponding path program 1 times [2021-11-19 13:38:20,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:20,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721182563] [2021-11-19 13:38:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:20,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:20,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:20,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:38:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:21,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:38:21,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:22,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 13:38:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 13:38:23,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:24,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 13:38:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 13:38:24,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:24,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721182563] [2021-11-19 13:38:24,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721182563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:24,392 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:24,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 17 [2021-11-19 13:38:24,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070950030] [2021-11-19 13:38:24,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:24,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 13:38:24,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 13:38:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:38:24,394 INFO L87 Difference]: Start difference. First operand 195 states and 243 transitions. Second operand has 17 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 6 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-19 13:38:26,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:27,853 INFO L93 Difference]: Finished difference Result 355 states and 450 transitions. [2021-11-19 13:38:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:38:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 6 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 149 [2021-11-19 13:38:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:27,856 INFO L225 Difference]: With dead ends: 355 [2021-11-19 13:38:27,856 INFO L226 Difference]: Without dead ends: 211 [2021-11-19 13:38:27,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:38:27,858 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 77 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:27,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1949 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 1 Unknown, 200 Unchecked, 3.3s Time] [2021-11-19 13:38:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-19 13:38:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2021-11-19 13:38:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 131 states have internal predecessors, (148), 49 states have call successors, (49), 21 states have call predecessors, (49), 21 states have return successors, (53), 47 states have call predecessors, (53), 48 states have call successors, (53) [2021-11-19 13:38:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 250 transitions. [2021-11-19 13:38:27,879 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 250 transitions. Word has length 149 [2021-11-19 13:38:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:27,880 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 250 transitions. [2021-11-19 13:38:27,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 6 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-19 13:38:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 250 transitions. [2021-11-19 13:38:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-19 13:38:27,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:27,883 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:27,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:28,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:28,108 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1940621115, now seen corresponding path program 1 times [2021-11-19 13:38:28,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:28,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525281964] [2021-11-19 13:38:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:28,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:28,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:28,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:38:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:29,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:38:29,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:29,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-19 13:38:29,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 13:38:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 13:38:29,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:30,248 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 13:38:30,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-19 13:38:30,257 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 13:38:30,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-19 13:38:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-19 13:38:30,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:30,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525281964] [2021-11-19 13:38:30,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525281964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:30,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:30,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 12 [2021-11-19 13:38:30,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745357246] [2021-11-19 13:38:30,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:30,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:38:30,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:38:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:38:30,577 INFO L87 Difference]: Start difference. First operand 200 states and 250 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:38:32,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:34,799 INFO L93 Difference]: Finished difference Result 267 states and 343 transitions. [2021-11-19 13:38:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:38:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 154 [2021-11-19 13:38:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:34,803 INFO L225 Difference]: With dead ends: 267 [2021-11-19 13:38:34,803 INFO L226 Difference]: Without dead ends: 265 [2021-11-19 13:38:34,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:38:34,805 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 103 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:34,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 2195 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 290 Invalid, 1 Unknown, 50 Unchecked, 3.8s Time] [2021-11-19 13:38:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-19 13:38:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 240. [2021-11-19 13:38:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 159 states have internal predecessors, (182), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (66), 57 states have call predecessors, (66), 59 states have call successors, (66) [2021-11-19 13:38:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 308 transitions. [2021-11-19 13:38:34,830 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 308 transitions. Word has length 154 [2021-11-19 13:38:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:34,831 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 308 transitions. [2021-11-19 13:38:34,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:38:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 308 transitions. [2021-11-19 13:38:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 13:38:34,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:34,835 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:34,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:35,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:35,056 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:35,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1709128455, now seen corresponding path program 1 times [2021-11-19 13:38:35,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:35,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727098452] [2021-11-19 13:38:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:35,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:35,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:35,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:35,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:38:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:36,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:38:36,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 13:38:37,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 13:38:38,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:38,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727098452] [2021-11-19 13:38:38,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727098452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:38,625 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:38,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 13:38:38,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622384395] [2021-11-19 13:38:38,625 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:38,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:38:38,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:38:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:38:38,627 INFO L87 Difference]: Start difference. First operand 240 states and 308 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 13:38:40,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:42,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:44,090 INFO L93 Difference]: Finished difference Result 372 states and 476 transitions. [2021-11-19 13:38:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:38:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 3 states have call successors, (28) Word has length 163 [2021-11-19 13:38:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:44,095 INFO L225 Difference]: With dead ends: 372 [2021-11-19 13:38:44,095 INFO L226 Difference]: Without dead ends: 255 [2021-11-19 13:38:44,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:38:44,097 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 29 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:44,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2147 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 2 Unknown, 155 Unchecked, 5.1s Time] [2021-11-19 13:38:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-19 13:38:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 252. [2021-11-19 13:38:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 166 states have (on average 1.1686746987951808) internal successors, (194), 170 states have internal predecessors, (194), 60 states have call successors, (60), 24 states have call predecessors, (60), 25 states have return successors, (71), 57 states have call predecessors, (71), 59 states have call successors, (71) [2021-11-19 13:38:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 325 transitions. [2021-11-19 13:38:44,122 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 325 transitions. Word has length 163 [2021-11-19 13:38:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:44,123 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 325 transitions. [2021-11-19 13:38:44,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 13:38:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 325 transitions. [2021-11-19 13:38:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 13:38:44,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:44,126 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:44,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:44,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:44,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash 896895099, now seen corresponding path program 1 times [2021-11-19 13:38:44,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:44,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587122303] [2021-11-19 13:38:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:44,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:44,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:44,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:44,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:38:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:45,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:38:45,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-19 13:38:45,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-19 13:38:46,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:46,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587122303] [2021-11-19 13:38:46,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587122303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:46,534 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:46,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 13:38:46,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648926009] [2021-11-19 13:38:46,535 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:46,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:38:46,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:38:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:38:46,537 INFO L87 Difference]: Start difference. First operand 252 states and 325 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 13:38:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:46,853 INFO L93 Difference]: Finished difference Result 376 states and 484 transitions. [2021-11-19 13:38:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:38:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 163 [2021-11-19 13:38:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:46,866 INFO L225 Difference]: With dead ends: 376 [2021-11-19 13:38:46,866 INFO L226 Difference]: Without dead ends: 254 [2021-11-19 13:38:46,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:38:46,870 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 82 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:46,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 752 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:38:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-19 13:38:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2021-11-19 13:38:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 163 states have (on average 1.1595092024539877) internal successors, (189), 165 states have internal predecessors, (189), 60 states have call successors, (60), 24 states have call predecessors, (60), 24 states have return successors, (70), 58 states have call predecessors, (70), 59 states have call successors, (70) [2021-11-19 13:38:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 319 transitions. [2021-11-19 13:38:46,897 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 319 transitions. Word has length 163 [2021-11-19 13:38:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:46,898 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 319 transitions. [2021-11-19 13:38:46,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-19 13:38:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 319 transitions. [2021-11-19 13:38:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-19 13:38:46,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:46,901 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:46,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:38:47,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:47,115 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1287253867, now seen corresponding path program 1 times [2021-11-19 13:38:47,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:47,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658365560] [2021-11-19 13:38:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:47,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:47,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:47,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:47,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:38:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:48,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:38:48,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-19 13:38:49,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 13:38:50,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:50,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658365560] [2021-11-19 13:38:50,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658365560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:50,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:50,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-19 13:38:50,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28992316] [2021-11-19 13:38:50,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:50,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:38:50,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:38:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:38:50,119 INFO L87 Difference]: Start difference. First operand 248 states and 319 transitions. Second operand has 13 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 13:38:52,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:54,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:38:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:56,378 INFO L93 Difference]: Finished difference Result 394 states and 514 transitions. [2021-11-19 13:38:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:38:56,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) Word has length 169 [2021-11-19 13:38:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:56,387 INFO L225 Difference]: With dead ends: 394 [2021-11-19 13:38:56,387 INFO L226 Difference]: Without dead ends: 246 [2021-11-19 13:38:56,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:38:56,390 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 17 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:56,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1451 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 2 Unknown, 46 Unchecked, 5.6s Time] [2021-11-19 13:38:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-19 13:38:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 235. [2021-11-19 13:38:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 153 states have (on average 1.1633986928104576) internal successors, (178), 155 states have internal predecessors, (178), 59 states have call successors, (59), 22 states have call predecessors, (59), 22 states have return successors, (62), 57 states have call predecessors, (62), 58 states have call successors, (62) [2021-11-19 13:38:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions. [2021-11-19 13:38:56,423 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 169 [2021-11-19 13:38:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:56,424 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions. [2021-11-19 13:38:56,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 13:38:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions. [2021-11-19 13:38:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-19 13:38:56,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:56,426 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:56,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 13:38:56,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:38:56,641 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:38:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash -883979431, now seen corresponding path program 1 times [2021-11-19 13:38:56,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:38:56,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301405338] [2021-11-19 13:38:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:56,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:38:56,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:38:56,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:38:56,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:38:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:57,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:38:57,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:58,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-19 13:38:58,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-19 13:38:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 13:38:58,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 13:38:59,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:38:59,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301405338] [2021-11-19 13:38:59,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301405338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:59,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:59,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-11-19 13:38:59,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047080444] [2021-11-19 13:38:59,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:59,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:38:59,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:38:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:38:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:38:59,232 INFO L87 Difference]: Start difference. First operand 235 states and 299 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 13:39:01,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:39:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:02,559 INFO L93 Difference]: Finished difference Result 288 states and 353 transitions. [2021-11-19 13:39:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:02,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 174 [2021-11-19 13:39:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:02,563 INFO L225 Difference]: With dead ends: 288 [2021-11-19 13:39:02,563 INFO L226 Difference]: Without dead ends: 266 [2021-11-19 13:39:02,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:39:02,565 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 96 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:02,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1135 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 107 Invalid, 1 Unknown, 51 Unchecked, 3.2s Time] [2021-11-19 13:39:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-19 13:39:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 257. [2021-11-19 13:39:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 169 states have (on average 1.1420118343195267) internal successors, (193), 171 states have internal predecessors, (193), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (64), 59 states have call predecessors, (64), 60 states have call successors, (64) [2021-11-19 13:39:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 318 transitions. [2021-11-19 13:39:02,589 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 318 transitions. Word has length 174 [2021-11-19 13:39:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:02,590 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 318 transitions. [2021-11-19 13:39:02,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 13:39:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 318 transitions. [2021-11-19 13:39:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 13:39:02,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:02,592 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:02,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:02,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:02,815 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1887584236, now seen corresponding path program 1 times [2021-11-19 13:39:02,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:02,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883061533] [2021-11-19 13:39:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:02,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:02,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:02,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_127bd510-90e9-4e47-8089-64b90f35e820/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:39:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:14,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-19 13:39:14,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:14,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:39:15,090 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 13:39:15,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-19 13:39:15,205 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:39:15,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 13:39:24,891 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-11-19 13:39:24,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 53 treesize of output 59 [2021-11-19 13:39:26,610 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-19 13:39:26,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2021-11-19 13:39:27,146 INFO L354 Elim1Store]: treesize reduction 60, result has 48.7 percent of original size [2021-11-19 13:39:27,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 104 [2021-11-19 13:39:29,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 135 [2021-11-19 13:39:29,660 INFO L354 Elim1Store]: treesize reduction 144, result has 23.8 percent of original size [2021-11-19 13:39:29,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 148 treesize of output 177 [2021-11-19 13:47:35,326 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:49:50,098 WARN L227 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 278 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 13:51:01,796 WARN L227 SmtUtils]: Spent 18.27s on a formula simplification. DAG size of input: 99 DAG size of output: 65 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:51:01,797 INFO L354 Elim1Store]: treesize reduction 100, result has 53.1 percent of original size [2021-11-19 13:51:01,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 543 treesize of output 550