./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8 --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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:47,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:47,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:47,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:47,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:47,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:47,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:47,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:47,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:47,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:47,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:47,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:47,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:47,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:47,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:47,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:47,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:47,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:47,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:47,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:47,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:47,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:47,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:47,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:47,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:47,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:47,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:47,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:47,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:47,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:47,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:47,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:47,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:47,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:47,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:47,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:47,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:47,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:47,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:47,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:47,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:47,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:59:47,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:47,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:47,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:47,822 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:47,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:47,823 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:47,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:59:47,823 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:47,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:47,824 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:59:47,824 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:59:47,824 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:47,825 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:59:47,825 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:59:47,825 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:59:47,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:47,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:59:47,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:47,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:47,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:47,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:47,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:47,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:47,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:47,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:47,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:47,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:47,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:47,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:47,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:47,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:47,830 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:59:47,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:59:47,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:47,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:47,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:47,831 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_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-11-07 01:59:48,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:48,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:48,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:48,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:48,163 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:48,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-07 01:59:48,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/5171f46ef/dd89268be80b41f5a09ef65dc8b040f6/FLAG5210f82a2 [2021-11-07 01:59:49,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:49,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-07 01:59:49,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/5171f46ef/dd89268be80b41f5a09ef65dc8b040f6/FLAG5210f82a2 [2021-11-07 01:59:49,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/5171f46ef/dd89268be80b41f5a09ef65dc8b040f6 [2021-11-07 01:59:49,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:49,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:49,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:49,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:49,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:49,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:49,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8021959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49, skipping insertion in model container [2021-11-07 01:59:49,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:49,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:49,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:50,241 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-07 01:59:50,253 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-07 01:59:50,279 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:59:50,290 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:59:51,274 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:59:51,379 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,382 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,399 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,402 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,406 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,412 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,413 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:51,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:59:51,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:59:51,866 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:59:51,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:59:51,869 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:59:51,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:59:51,871 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:59:51,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:59:51,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:59:51,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:59:52,040 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:52,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:52,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:52,198 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) [2021-11-07 01:59:52,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cce36ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:52, skipping insertion in model container [2021-11-07 01:59:52,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:52,200 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:59:52,202 INFO L168 Benchmark]: Toolchain (without parser) took 2499.48 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 49.8 MB in the beginning and 68.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:52,203 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:52,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2494.28 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 49.6 MB in the beginning and 68.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:52,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2494.28 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 49.6 MB in the beginning and 68.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8 --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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:54,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:54,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:54,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:54,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:54,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:54,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:54,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:54,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:54,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:54,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:54,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:54,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:54,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:54,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:54,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:54,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:54,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:54,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:54,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:54,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:54,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:54,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:54,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:54,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:54,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:54,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:54,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:54,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:54,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:54,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:55,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:55,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:55,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:55,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:55,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:55,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:55,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:55,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:55,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:55,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:55,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:59:55,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:55,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:55,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:55,092 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:55,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:55,092 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:55,093 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:55,093 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:55,093 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:55,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:55,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:55,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:55,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:55,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:55,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:55,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:59:55,098 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:59:55,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:55,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:55,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:55,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:55,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:59:55,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:55,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:55,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:55,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:55,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:55,101 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:59:55,101 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:55,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:55,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:55,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:55,102 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_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-11-07 01:59:55,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:55,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:55,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:55,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:55,614 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:55,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-07 01:59:55,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/e78bfdab7/7169457fdce74610bdd89d33ec69714b/FLAG8eb65691a [2021-11-07 01:59:56,616 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:56,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-11-07 01:59:56,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/e78bfdab7/7169457fdce74610bdd89d33ec69714b/FLAG8eb65691a [2021-11-07 01:59:57,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/data/e78bfdab7/7169457fdce74610bdd89d33ec69714b [2021-11-07 01:59:57,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:57,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:57,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:57,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:57,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:57,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23406256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57, skipping insertion in model container [2021-11-07 01:59:57,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:57,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:57,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-07 01:59:57,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-07 01:59:57,703 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:59:57,712 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:59:58,679 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:59:58,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,769 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,771 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,793 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,796 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,799 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:58,799 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,300 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:59:59,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:59:59,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:59:59,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:59:59,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:59:59,308 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:59:59,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:59:59,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:59:59,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:59:59,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:59:59,503 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:59,634 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:59:59,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:59,686 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-07 01:59:59,687 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-07 01:59:59,688 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:59:59,689 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:59:59,729 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:59:59,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,769 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:59:59,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:59:59,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:59:59,830 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:59:59,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:59:59,832 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:59:59,833 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:59:59,834 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:59:59,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:59:59,836 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:59:59,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:59:59,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:59,954 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:59:59,969 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2021-11-07 01:59:59,970 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2021-11-07 01:59:59,972 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:59:59,972 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:00:00,007 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:00:00,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,022 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,072 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,072 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,114 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:00:00,115 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:00:00,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:00:00,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:00:00,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:00:00,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:00:00,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:00:00,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:00:00,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:00:00,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:00:00,141 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:00:00,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:00,675 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:00:00,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00 WrapperNode [2021-11-07 02:00:00,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:00,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:00:00,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:00:00,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:00:00,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:00,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:00:01,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:00:01,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:00:01,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:00:01,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:00:01,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:00:01,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:00:01,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:00:01,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (1/1) ... [2021-11-07 02:00:01,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:01,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:00:01,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:00:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:00:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:00:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:00:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:00:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:00:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:00:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:00:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:00:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:00:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:00:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:00:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 02:00:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:00:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:00:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:00:16,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:00:16,829 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 02:00:16,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:16 BoogieIcfgContainer [2021-11-07 02:00:16,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:00:16,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:00:16,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:00:16,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:00:16,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:59:57" (1/3) ... [2021-11-07 02:00:16,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756e874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:16, skipping insertion in model container [2021-11-07 02:00:16,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:00" (2/3) ... [2021-11-07 02:00:16,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756e874d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:16, skipping insertion in model container [2021-11-07 02:00:16,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:16" (3/3) ... [2021-11-07 02:00:16,857 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-11-07 02:00:16,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:00:16,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:00:16,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:00:16,955 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 [2021-11-07 02:00:16,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:00:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:00:17,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:17,004 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:17,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash -68563336, now seen corresponding path program 1 times [2021-11-07 02:00:17,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:17,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359870000] [2021-11-07 02:00:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:17,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:17,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:17,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:17,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:00:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:21,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:00:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:21,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:22,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:22,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359870000] [2021-11-07 02:00:22,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359870000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:22,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:22,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:00:22,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64651306] [2021-11-07 02:00:22,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:00:22,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:00:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:00:22,154 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:22,182 INFO L93 Difference]: Finished difference Result 162 states and 227 transitions. [2021-11-07 02:00:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:00:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 02:00:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:22,194 INFO L225 Difference]: With dead ends: 162 [2021-11-07 02:00:22,195 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 02:00:22,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:00:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 02:00:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-07 02:00:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-11-07 02:00:22,242 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 31 [2021-11-07 02:00:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:22,243 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-11-07 02:00:22,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-11-07 02:00:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 02:00:22,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:22,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:22,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:22,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:22,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash 814292389, now seen corresponding path program 1 times [2021-11-07 02:00:22,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:22,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889771280] [2021-11-07 02:00:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:22,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:22,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:22,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:00:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:26,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:00:26,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:27,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:27,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:27,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889771280] [2021-11-07 02:00:27,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889771280] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:27,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:27,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:00:27,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069965964] [2021-11-07 02:00:27,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:00:27,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:00:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:00:27,300 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:27,370 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2021-11-07 02:00:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:00:27,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 02:00:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:27,373 INFO L225 Difference]: With dead ends: 143 [2021-11-07 02:00:27,374 INFO L226 Difference]: Without dead ends: 79 [2021-11-07 02:00:27,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:00:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-07 02:00:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-07 02:00:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2021-11-07 02:00:27,387 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 34 [2021-11-07 02:00:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:27,387 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2021-11-07 02:00:27,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2021-11-07 02:00:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 02:00:27,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:27,390 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:27,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:27,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:27,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash -571911005, now seen corresponding path program 1 times [2021-11-07 02:00:27,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:27,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750229767] [2021-11-07 02:00:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:27,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:27,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:27,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:00:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:32,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:32,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:32,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:32,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:32,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750229767] [2021-11-07 02:00:32,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750229767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:32,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:32,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:00:32,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935674415] [2021-11-07 02:00:32,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:32,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:32,621 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:32,933 INFO L93 Difference]: Finished difference Result 150 states and 189 transitions. [2021-11-07 02:00:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 02:00:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:32,936 INFO L225 Difference]: With dead ends: 150 [2021-11-07 02:00:32,937 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 02:00:32,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:00:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 02:00:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2021-11-07 02:00:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 78 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2021-11-07 02:00:32,949 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 34 [2021-11-07 02:00:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:32,950 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2021-11-07 02:00:32,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2021-11-07 02:00:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:00:32,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:32,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:33,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:33,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:33,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:33,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash 77568063, now seen corresponding path program 1 times [2021-11-07 02:00:33,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:33,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903447577] [2021-11-07 02:00:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:33,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:33,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:33,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:00:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:38,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:38,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:38,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:38,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:38,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903447577] [2021-11-07 02:00:38,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903447577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:38,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:38,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:00:38,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183073787] [2021-11-07 02:00:38,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:38,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:38,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:38,464 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:38,543 INFO L93 Difference]: Finished difference Result 200 states and 255 transitions. [2021-11-07 02:00:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 02:00:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:38,547 INFO L225 Difference]: With dead ends: 200 [2021-11-07 02:00:38,547 INFO L226 Difference]: Without dead ends: 159 [2021-11-07 02:00:38,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:38,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-07 02:00:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 87. [2021-11-07 02:00:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2021-11-07 02:00:38,561 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 42 [2021-11-07 02:00:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:38,562 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-11-07 02:00:38,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2021-11-07 02:00:38,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:00:38,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:38,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:38,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:38,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:38,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2071844563, now seen corresponding path program 1 times [2021-11-07 02:00:38,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:38,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930269612] [2021-11-07 02:00:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:38,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:38,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:38,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:00:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:43,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:43,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:43,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:43,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:43,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930269612] [2021-11-07 02:00:43,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930269612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:43,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:43,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:00:43,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873592783] [2021-11-07 02:00:43,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:43,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:43,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:43,909 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:43,999 INFO L93 Difference]: Finished difference Result 151 states and 188 transitions. [2021-11-07 02:00:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:00:44,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 02:00:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:44,002 INFO L225 Difference]: With dead ends: 151 [2021-11-07 02:00:44,002 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 02:00:44,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:00:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 02:00:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 89. [2021-11-07 02:00:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 88 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2021-11-07 02:00:44,015 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 42 [2021-11-07 02:00:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:44,016 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2021-11-07 02:00:44,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:44,017 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2021-11-07 02:00:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:00:44,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:44,019 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:44,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:44,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:44,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1306742999, now seen corresponding path program 1 times [2021-11-07 02:00:44,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:44,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598892079] [2021-11-07 02:00:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:44,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:44,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:00:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:49,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:00:49,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:49,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:49,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:49,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598892079] [2021-11-07 02:00:49,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598892079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:49,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:49,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:00:49,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678373177] [2021-11-07 02:00:49,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:00:49,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:00:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:00:49,619 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:49,932 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2021-11-07 02:00:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:00:49,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:00:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:49,935 INFO L225 Difference]: With dead ends: 118 [2021-11-07 02:00:49,936 INFO L226 Difference]: Without dead ends: 89 [2021-11-07 02:00:49,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:00:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-07 02:00:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-07 02:00:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2021-11-07 02:00:49,949 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 44 [2021-11-07 02:00:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:49,950 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2021-11-07 02:00:49,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2021-11-07 02:00:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 02:00:49,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:49,954 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:00:50,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:50,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:50,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 422447785, now seen corresponding path program 1 times [2021-11-07 02:00:50,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:50,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283597502] [2021-11-07 02:00:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:50,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:50,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:50,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:50,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:00:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:54,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:00:54,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:55,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:55,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:55,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283597502] [2021-11-07 02:00:55,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283597502] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:55,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2079939286] [2021-11-07 02:00:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:55,838 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:55,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:55,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:00:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:57,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:00:57,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:58,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:58,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2079939286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:58,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:00:58,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:00:58,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367630534] [2021-11-07 02:00:58,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:58,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:58,279 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:58,321 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-11-07 02:00:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 02:00:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:58,323 INFO L225 Difference]: With dead ends: 106 [2021-11-07 02:00:58,323 INFO L226 Difference]: Without dead ends: 91 [2021-11-07 02:00:58,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:58,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-07 02:00:58,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-11-07 02:00:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 90 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2021-11-07 02:00:58,346 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 48 [2021-11-07 02:00:58,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:58,351 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2021-11-07 02:00:58,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2021-11-07 02:00:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 02:00:58,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:58,362 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:00:58,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:58,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:58,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:58,782 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1490136503, now seen corresponding path program 1 times [2021-11-07 02:00:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:58,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702449398] [2021-11-07 02:00:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:58,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:58,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:58,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:01:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:03,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:01:03,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:03,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:04,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:04,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702449398] [2021-11-07 02:01:04,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702449398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:04,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1692499364] [2021-11-07 02:01:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:04,371 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:04,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:01:04,375 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:01:04,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:01:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:09,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:01:09,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:09,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:09,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1692499364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:09,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105153475] [2021-11-07 02:01:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:09,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:01:09,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:09,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:01:09,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 02:01:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:11,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 02:01:11,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:12,465 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 12 treesize of output 8 [2021-11-07 02:01:12,637 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 02:01:12,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 02:01:13,015 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 15 treesize of output 7 [2021-11-07 02:01:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:01:13,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:15,371 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) is different from false [2021-11-07 02:01:15,392 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 85 treesize of output 81 [2021-11-07 02:01:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 2 not checked. [2021-11-07 02:01:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105153475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:16,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:01:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 9, 8] total 20 [2021-11-07 02:01:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96502147] [2021-11-07 02:01:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 02:01:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 02:01:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=289, Unknown=1, NotChecked=34, Total=380 [2021-11-07 02:01:16,262 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:25,792 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= (_ bv0 64) c_ULTIMATE.start_aws_is_mem_zeroed_~i~0) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (= (_ bv40 64) c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize)) is different from false [2021-11-07 02:01:28,292 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 (_ bv1 64)) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (= (_ bv40 64) c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize)) is different from false [2021-11-07 02:01:30,910 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (= (_ bv40 64) c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (= c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 (_ bv2 64))) is different from false [2021-11-07 02:01:33,537 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|))) is different from false [2021-11-07 02:01:35,649 WARN L838 $PredicateComparison]: unable to prove that (and (bvult (bvadd c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 (_ bv1 64)) c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (bvult (bvadd c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 (_ bv2 64)) c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (bvult c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|))) is different from false [2021-11-07 02:01:38,156 WARN L838 $PredicateComparison]: unable to prove that (and (bvult (bvadd c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 (_ bv1 64)) c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (bvult c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|))) is different from false [2021-11-07 02:01:40,923 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (bvult c_ULTIMATE.start_aws_is_mem_zeroed_~i~0 c_ULTIMATE.start_aws_is_mem_zeroed_~bufsize) (= |c_ULTIMATE.start_#Ultimate.C_memset_#value| (_ bv0 32)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset| c_ULTIMATE.start_aws_array_list_clean_up_~list.offset) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| (_ BitVec 64))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr925| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|))) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (_ bv0 8))) (= c_ULTIMATE.start_aws_array_list_clean_up_~list.base |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.base|) (= (_ bv0 64) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0.offset|) (= ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|) (select (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|))) is different from false [2021-11-07 02:01:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:41,809 INFO L93 Difference]: Finished difference Result 412 states and 502 transitions. [2021-11-07 02:01:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 02:01:41,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 02:01:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:41,814 INFO L225 Difference]: With dead ends: 412 [2021-11-07 02:01:41,814 INFO L226 Difference]: Without dead ends: 365 [2021-11-07 02:01:41,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=417, Invalid=1587, Unknown=8, NotChecked=744, Total=2756 [2021-11-07 02:01:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-07 02:01:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 121. [2021-11-07 02:01:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.2583333333333333) internal successors, (151), 120 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2021-11-07 02:01:41,835 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 50 [2021-11-07 02:01:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:41,836 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2021-11-07 02:01:41,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2021-11-07 02:01:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:01:41,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:41,839 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:41,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:42,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:42,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:42,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:42,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2057221802, now seen corresponding path program 1 times [2021-11-07 02:01:42,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:42,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360854498] [2021-11-07 02:01:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:42,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:42,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:42,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:01:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:47,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:01:47,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:48,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:48,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:48,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360854498] [2021-11-07 02:01:48,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360854498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:48,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1850813696] [2021-11-07 02:01:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:48,638 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:48,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:01:48,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:01:48,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:01:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:53,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:01:53,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:53,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:53,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1850813696] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:53,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896243072] [2021-11-07 02:01:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:53,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:01:53,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:53,912 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:01:53,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 02:01:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:55,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:01:55,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:56,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:57,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896243072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:57,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:01:57,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 02:01:57,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594884045] [2021-11-07 02:01:57,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:01:57,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:01:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:01:57,091 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:58,112 INFO L93 Difference]: Finished difference Result 153 states and 194 transitions. [2021-11-07 02:01:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:01:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 02:01:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:58,115 INFO L225 Difference]: With dead ends: 153 [2021-11-07 02:01:58,115 INFO L226 Difference]: Without dead ends: 121 [2021-11-07 02:01:58,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:01:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-07 02:01:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-07 02:01:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.25) internal successors, (150), 120 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2021-11-07 02:01:58,131 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 55 [2021-11-07 02:01:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:58,132 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2021-11-07 02:01:58,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2021-11-07 02:01:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:01:58,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:58,135 INFO L513 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:58,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:58,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:58,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 02:01:58,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:58,746 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -771392955, now seen corresponding path program 2 times [2021-11-07 02:01:58,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:58,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830095847] [2021-11-07 02:01:58,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:01:58,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:58,754 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:58,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96011f7-d37f-4ae6-ae6e-3eefe2220811/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process