./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_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_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/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_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/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_25477e27-4453-4942-8a29-9299072d6da1/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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:05:01,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:05:01,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:05:01,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:05:01,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:05:01,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:05:01,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:05:01,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:05:01,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:05:01,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:05:01,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:05:01,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:05:01,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:05:01,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:05:01,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:05:01,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:05:01,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:05:01,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:05:01,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:05:01,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:05:01,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:05:01,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:05:01,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:05:01,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:05:01,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:05:01,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:05:01,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:05:01,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:05:01,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:05:01,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:05:01,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:05:01,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:05:01,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:05:01,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:05:01,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:05:01,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:05:01,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:05:01,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:05:01,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:05:01,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:05:01,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:05:01,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:05:01,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:05:01,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:05:01,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:05:01,892 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:05:01,892 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:05:01,892 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:05:01,893 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:05:01,893 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:05:01,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:05:01,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:05:01,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:05:01,894 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:05:01,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:05:01,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:05:01,894 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:05:01,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:05:01,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:05:01,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:05:01,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:05:01,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:05:01,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:05:01,896 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:05:01,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:05:01,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:05:01,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:05:01,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:05:01,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:05:01,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:05:01,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:05:01,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:05:01,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:05:01,898 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:05:01,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:05:01,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:05:01,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:05:01,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:05:01,899 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_25477e27-4453-4942-8a29-9299072d6da1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-07 02:05:02,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:05:02,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:05:02,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:05:02,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:05:02,272 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:05:02,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-07 02:05:02,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/57bc6fccc/206364b58d0b4b468a02a5f0b7a1519e/FLAG64a9ca1bf [2021-11-07 02:05:03,369 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:05:03,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-07 02:05:03,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/57bc6fccc/206364b58d0b4b468a02a5f0b7a1519e/FLAG64a9ca1bf [2021-11-07 02:05:03,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/57bc6fccc/206364b58d0b4b468a02a5f0b7a1519e [2021-11-07 02:05:03,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:05:03,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:05:03,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:05:03,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:05:03,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:05:03,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:05:03" (1/1) ... [2021-11-07 02:05:03,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71adf885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:03, skipping insertion in model container [2021-11-07 02:05:03,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:05:03" (1/1) ... [2021-11-07 02:05:03,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:05:03,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:05:04,238 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-07 02:05:04,246 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-07 02:05:04,275 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:05:04,282 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:05:05,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,648 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:05,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,237 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:05:06,238 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:05:06,240 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:05:06,241 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:05:06,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:05:06,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:05:06,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:05:06,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:05:06,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:05:06,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:05:06,517 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:05:06,869 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,870 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,892 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:06,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:05:07,005 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 02:05:07,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5da73df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:07, skipping insertion in model container [2021-11-07 02:05:07,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:05:07,006 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:05:07,010 INFO L168 Benchmark]: Toolchain (without parser) took 3222.72 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 56.8 MB in the beginning and 66.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:05:07,011 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:05:07,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3220.29 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 66.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:05:07,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3220.29 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 66.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/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_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/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_25477e27-4453-4942-8a29-9299072d6da1/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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:05:09,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:05:09,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:05:09,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:05:09,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:05:09,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:05:09,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:05:09,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:05:09,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:05:09,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:05:09,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:05:09,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:05:09,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:05:09,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:05:09,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:05:09,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:05:09,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:05:09,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:05:09,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:05:09,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:05:09,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:05:09,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:05:09,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:05:09,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:05:09,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:05:09,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:05:09,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:05:09,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:05:09,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:05:09,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:05:09,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:05:09,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:05:09,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:05:09,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:05:09,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:05:09,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:05:09,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:05:09,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:05:09,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:05:09,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:05:09,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:05:09,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:05:09,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:05:09,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:05:09,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:05:09,574 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:05:09,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:05:09,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:05:09,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:05:09,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:05:09,575 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:05:09,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:05:09,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:05:09,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:05:09,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:05:09,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:05:09,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:05:09,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:05:09,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:05:09,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:05:09,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:05:09,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:05:09,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:05:09,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:05:09,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:05:09,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:05:09,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:05:09,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:05:09,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:05:09,580 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:05:09,580 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:09,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:05:09,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:05:09,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:05:09,586 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_25477e27-4453-4942-8a29-9299072d6da1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-07 02:05:10,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:05:10,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:05:10,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:05:10,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:05:10,038 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:05:10,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-07 02:05:10,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/813dab9f4/d6e0d263d49148f689c53200c6889516/FLAGea706196c [2021-11-07 02:05:11,065 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:05:11,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-07 02:05:11,129 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/813dab9f4/d6e0d263d49148f689c53200c6889516/FLAGea706196c [2021-11-07 02:05:11,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/data/813dab9f4/d6e0d263d49148f689c53200c6889516 [2021-11-07 02:05:11,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:05:11,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:05:11,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:05:11,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:05:11,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:05:11,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:05:11" (1/1) ... [2021-11-07 02:05:11,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39667aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:11, skipping insertion in model container [2021-11-07 02:05:11,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:05:11" (1/1) ... [2021-11-07 02:05:11,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:05:11,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:05:12,056 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-07 02:05:12,062 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-07 02:05:12,086 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:05:12,092 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:05:13,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,210 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:13,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:05:13,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:05:13,803 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:05:13,804 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:05:13,806 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:05:13,807 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:05:13,808 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:05:13,809 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:05:13,810 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:05:13,810 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:05:14,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:05:14,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,628 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,655 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,659 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:05:14,775 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:05:14,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:05:14,868 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-07 02:05:14,869 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-07 02:05:14,871 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:05:14,872 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:05:14,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:14,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:05:14,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:05:14,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:05:14,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:05:14,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:05:14,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:05:14,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:05:14,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:05:14,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:05:14,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:05:15,010 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:05:15,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,164 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:05:15,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:05:15,262 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-11-07 02:05:15,263 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_25477e27-4453-4942-8a29-9299072d6da1/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-11-07 02:05:15,264 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:05:15,265 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:05:15,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:05:15,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:05:15,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:05:15,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:05:15,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:05:15,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:05:15,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:05:15,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:05:15,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:05:15,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:05:15,423 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:05:15,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:05:15,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:05:16,146 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:05:16,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16 WrapperNode [2021-11-07 02:05:16,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:05:16,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:05:16,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:05:16,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:05:16,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:05:16,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:05:16,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:05:16,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:05:16,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:05:16,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:05:16,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:05:16,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:05:16,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (1/1) ... [2021-11-07 02:05:16,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:05:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:05:16,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:05:16,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:05:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-07 02:05:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:05:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:05:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:05:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:05:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 02:05:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:05:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 02:05:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:05:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:05:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:05:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:05:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:05:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:05:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:05:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:05:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:05:33,011 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !true; [2021-11-07 02:05:33,011 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !true; [2021-11-07 02:05:33,011 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##197: assume !true; [2021-11-07 02:05:33,011 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##125: assume !true; [2021-11-07 02:05:33,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:05:33,029 INFO L299 CfgBuilder]: Removed 273 assume(true) statements. [2021-11-07 02:05:33,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:05:33 BoogieIcfgContainer [2021-11-07 02:05:33,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:05:33,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:05:33,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:05:33,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:05:33,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:05:11" (1/3) ... [2021-11-07 02:05:33,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1deff3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:05:33, skipping insertion in model container [2021-11-07 02:05:33,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:16" (2/3) ... [2021-11-07 02:05:33,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1deff3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:05:33, skipping insertion in model container [2021-11-07 02:05:33,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:05:33" (3/3) ... [2021-11-07 02:05:33,045 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-07 02:05:33,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:05:33,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 02:05:33,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:05:33,123 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 02:05:33,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 02:05:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 265 states have (on average 1.4226415094339622) internal successors, (377), 279 states have internal predecessors, (377), 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 02:05:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 02:05:33,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:33,151 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, 1, 1, 1, 1, 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 02:05:33,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:05:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash -468143570, now seen corresponding path program 1 times [2021-11-07 02:05:33,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:33,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258353042] [2021-11-07 02:05:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:33,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:33,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:33,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:33,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:05:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:37,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:05:37,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:38,125 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 02:05:38,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:38,399 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 02:05:38,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:38,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258353042] [2021-11-07 02:05:38,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258353042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:38,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:38,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:05:38,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094623792] [2021-11-07 02:05:38,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:05:38,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:05:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:05:38,438 INFO L87 Difference]: Start difference. First operand has 280 states, 265 states have (on average 1.4226415094339622) internal successors, (377), 279 states have internal predecessors, (377), 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 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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 02:05:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:38,514 INFO L93 Difference]: Finished difference Result 555 states and 748 transitions. [2021-11-07 02:05:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:05:38,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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 72 [2021-11-07 02:05:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:38,533 INFO L225 Difference]: With dead ends: 555 [2021-11-07 02:05:38,534 INFO L226 Difference]: Without dead ends: 273 [2021-11-07 02:05:38,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 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 02:05:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-07 02:05:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-11-07 02:05:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.250965250965251) internal successors, (324), 272 states have internal predecessors, (324), 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 02:05:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 324 transitions. [2021-11-07 02:05:38,588 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 324 transitions. Word has length 72 [2021-11-07 02:05:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:38,589 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 324 transitions. [2021-11-07 02:05:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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 02:05:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 324 transitions. [2021-11-07 02:05:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 02:05:38,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:38,593 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, 1, 1, 1, 1, 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 02:05:38,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:38,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:38,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:05:38,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1429628202, now seen corresponding path program 1 times [2021-11-07 02:05:38,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:38,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347296256] [2021-11-07 02:05:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:38,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:38,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:38,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:05:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:43,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:05:43,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:43,594 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 02:05:43,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:43,958 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 02:05:43,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:43,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347296256] [2021-11-07 02:05:43,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347296256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:43,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:43,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:05:43,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380458806] [2021-11-07 02:05:43,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:05:43,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:05:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:05:43,962 INFO L87 Difference]: Start difference. First operand 273 states and 324 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 02:05:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:44,345 INFO L93 Difference]: Finished difference Result 781 states and 928 transitions. [2021-11-07 02:05:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:05:44,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2021-11-07 02:05:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:44,351 INFO L225 Difference]: With dead ends: 781 [2021-11-07 02:05:44,351 INFO L226 Difference]: Without dead ends: 530 [2021-11-07 02:05:44,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:05:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-07 02:05:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 279. [2021-11-07 02:05:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 265 states have (on average 1.2452830188679245) internal successors, (330), 278 states have internal predecessors, (330), 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 02:05:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 330 transitions. [2021-11-07 02:05:44,379 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 330 transitions. Word has length 72 [2021-11-07 02:05:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:44,379 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 330 transitions. [2021-11-07 02:05:44,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 02:05:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 330 transitions. [2021-11-07 02:05:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 02:05:44,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:44,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:44,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:44,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:44,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:05:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 874876930, now seen corresponding path program 1 times [2021-11-07 02:05:44,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:44,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075258607] [2021-11-07 02:05:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:44,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:44,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:44,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:05:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:48,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:05:48,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:49,086 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 02:05:49,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:49,439 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 02:05:49,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:49,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075258607] [2021-11-07 02:05:49,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075258607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:49,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:49,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:05:49,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330674773] [2021-11-07 02:05:49,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:05:49,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:05:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:05:49,442 INFO L87 Difference]: Start difference. First operand 279 states and 330 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 02:05:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:49,800 INFO L93 Difference]: Finished difference Result 535 states and 633 transitions. [2021-11-07 02:05:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:05:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 76 [2021-11-07 02:05:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:49,806 INFO L225 Difference]: With dead ends: 535 [2021-11-07 02:05:49,806 INFO L226 Difference]: Without dead ends: 279 [2021-11-07 02:05:49,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:05:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-07 02:05:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2021-11-07 02:05:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.2355212355212355) internal successors, (320), 272 states have internal predecessors, (320), 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 02:05:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 320 transitions. [2021-11-07 02:05:49,827 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 320 transitions. Word has length 76 [2021-11-07 02:05:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:49,828 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 320 transitions. [2021-11-07 02:05:49,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 02:05:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 320 transitions. [2021-11-07 02:05:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 02:05:49,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:49,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:49,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:50,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:50,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:05:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:50,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1122115809, now seen corresponding path program 1 times [2021-11-07 02:05:50,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:50,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176575652] [2021-11-07 02:05:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:50,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:50,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:50,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:50,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:05:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:54,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:05:54,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:55,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:05:55,446 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 02:05:55,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:55,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-07 02:05:56,180 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 02:05:56,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:56,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176575652] [2021-11-07 02:05:56,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176575652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:56,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:56,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-07 02:05:56,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107898004] [2021-11-07 02:05:56,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:05:56,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:05:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:05:56,186 INFO L87 Difference]: Start difference. First operand 273 states and 320 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 02:06:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:03,286 INFO L93 Difference]: Finished difference Result 517 states and 608 transitions. [2021-11-07 02:06:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:06:03,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 82 [2021-11-07 02:06:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:03,291 INFO L225 Difference]: With dead ends: 517 [2021-11-07 02:06:03,291 INFO L226 Difference]: Without dead ends: 279 [2021-11-07 02:06:03,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:06:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-07 02:06:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2021-11-07 02:06:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 261 states have (on average 1.2337164750957854) internal successors, (322), 274 states have internal predecessors, (322), 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 02:06:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 322 transitions. [2021-11-07 02:06:03,322 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 322 transitions. Word has length 82 [2021-11-07 02:06:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:03,322 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 322 transitions. [2021-11-07 02:06:03,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 02:06:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 322 transitions. [2021-11-07 02:06:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 02:06:03,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:03,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:03,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 02:06:03,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:03,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash 138801441, now seen corresponding path program 1 times [2021-11-07 02:06:03,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:03,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2272540] [2021-11-07 02:06:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:03,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:03,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:03,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:03,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:06:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:08,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:08,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:08,586 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 02:06:08,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:08,986 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 02:06:08,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:08,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2272540] [2021-11-07 02:06:08,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2272540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:08,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:08,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:06:08,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020921342] [2021-11-07 02:06:08,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:06:08,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:06:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:06:08,989 INFO L87 Difference]: Start difference. First operand 275 states and 322 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 02:06:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:09,217 INFO L93 Difference]: Finished difference Result 516 states and 606 transitions. [2021-11-07 02:06:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:06:09,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2021-11-07 02:06:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:09,222 INFO L225 Difference]: With dead ends: 516 [2021-11-07 02:06:09,222 INFO L226 Difference]: Without dead ends: 273 [2021-11-07 02:06:09,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 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 02:06:09,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-07 02:06:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-11-07 02:06:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.2162162162162162) internal successors, (315), 272 states have internal predecessors, (315), 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 02:06:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 315 transitions. [2021-11-07 02:06:09,236 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 315 transitions. Word has length 82 [2021-11-07 02:06:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:09,236 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 315 transitions. [2021-11-07 02:06:09,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 02:06:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 315 transitions. [2021-11-07 02:06:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 02:06:09,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:09,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:09,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:09,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:09,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2042092550, now seen corresponding path program 1 times [2021-11-07 02:06:09,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:09,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627815150] [2021-11-07 02:06:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:09,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:09,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:09,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:09,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:06:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:14,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:06:14,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:14,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:06:14,647 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 16 treesize of output 8 [2021-11-07 02:06:14,868 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 02:06:14,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:15,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-07 02:06:15,547 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 02:06:15,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:15,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627815150] [2021-11-07 02:06:15,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627815150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:15,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:15,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 02:06:15,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603973127] [2021-11-07 02:06:15,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:06:15,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:06:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:06:15,550 INFO L87 Difference]: Start difference. First operand 273 states and 315 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 02:06:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:22,927 INFO L93 Difference]: Finished difference Result 527 states and 609 transitions. [2021-11-07 02:06:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:06:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 84 [2021-11-07 02:06:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:22,933 INFO L225 Difference]: With dead ends: 527 [2021-11-07 02:06:22,933 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 02:06:22,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:06:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 02:06:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 273. [2021-11-07 02:06:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.2123552123552124) internal successors, (314), 272 states have internal predecessors, (314), 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 02:06:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 314 transitions. [2021-11-07 02:06:22,948 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 314 transitions. Word has length 84 [2021-11-07 02:06:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:22,949 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 314 transitions. [2021-11-07 02:06:22,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 02:06:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 314 transitions. [2021-11-07 02:06:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 02:06:22,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:22,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:23,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:23,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:23,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:23,170 INFO L85 PathProgramCache]: Analyzing trace with hash 90572465, now seen corresponding path program 1 times [2021-11-07 02:06:23,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:23,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530031597] [2021-11-07 02:06:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:23,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:23,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:23,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:23,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:06:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:27,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:06:27,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:28,262 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 02:06:28,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:28,474 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 02:06:28,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:28,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530031597] [2021-11-07 02:06:28,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530031597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:28,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:28,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:06:28,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217260783] [2021-11-07 02:06:28,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:06:28,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:06:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:06:28,476 INFO L87 Difference]: Start difference. First operand 273 states and 314 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 02:06:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:28,924 INFO L93 Difference]: Finished difference Result 519 states and 597 transitions. [2021-11-07 02:06:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:06:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2021-11-07 02:06:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:28,927 INFO L225 Difference]: With dead ends: 519 [2021-11-07 02:06:28,927 INFO L226 Difference]: Without dead ends: 320 [2021-11-07 02:06:28,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:06:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-07 02:06:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 273. [2021-11-07 02:06:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.2046332046332047) internal successors, (312), 272 states have internal predecessors, (312), 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 02:06:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 312 transitions. [2021-11-07 02:06:28,942 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 312 transitions. Word has length 85 [2021-11-07 02:06:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:28,943 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 312 transitions. [2021-11-07 02:06:28,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 02:06:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 312 transitions. [2021-11-07 02:06:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 02:06:28,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:28,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:28,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:06:29,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:29,162 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2109994319, now seen corresponding path program 1 times [2021-11-07 02:06:29,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:29,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91322428] [2021-11-07 02:06:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:29,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:29,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:29,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:06:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:33,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:06:33,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:34,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 02:06:34,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-07 02:06:34,574 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 02:06:34,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:34,964 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 02:06:34,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:34,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91322428] [2021-11-07 02:06:34,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91322428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:34,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:34,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 02:06:34,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828592114] [2021-11-07 02:06:34,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:06:34,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:06:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:06:34,966 INFO L87 Difference]: Start difference. First operand 273 states and 312 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 02:06:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:45,729 INFO L93 Difference]: Finished difference Result 644 states and 744 transitions. [2021-11-07 02:06:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:06:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 89 [2021-11-07 02:06:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:45,736 INFO L225 Difference]: With dead ends: 644 [2021-11-07 02:06:45,737 INFO L226 Difference]: Without dead ends: 447 [2021-11-07 02:06:45,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:06:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-07 02:06:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 273. [2021-11-07 02:06:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.1891891891891893) internal successors, (308), 272 states have internal predecessors, (308), 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 02:06:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 308 transitions. [2021-11-07 02:06:45,759 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 308 transitions. Word has length 89 [2021-11-07 02:06:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:45,759 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 308 transitions. [2021-11-07 02:06:45,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 02:06:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 308 transitions. [2021-11-07 02:06:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 02:06:45,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:45,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:45,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:06:45,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:45,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:45,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:45,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1807482378, now seen corresponding path program 1 times [2021-11-07 02:06:45,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:45,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444173628] [2021-11-07 02:06:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:45,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:45,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:06:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:51,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 02:06:51,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:52,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 02:06:52,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-07 02:06:52,190 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 02:06:52,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:52,813 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 02:06:52,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-07 02:06:52,828 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-07 02:06:52,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 02:06:52,955 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 02:06:52,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:52,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444173628] [2021-11-07 02:06:52,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444173628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:52,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:52,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-07 02:06:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026459832] [2021-11-07 02:06:52,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:06:52,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:06:52,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:06:52,958 INFO L87 Difference]: Start difference. First operand 273 states and 308 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 02:07:07,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:07,379 INFO L93 Difference]: Finished difference Result 652 states and 742 transitions. [2021-11-07 02:07:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 02:07:07,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 91 [2021-11-07 02:07:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:07,385 INFO L225 Difference]: With dead ends: 652 [2021-11-07 02:07:07,385 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 02:07:07,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2021-11-07 02:07:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 02:07:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 311. [2021-11-07 02:07:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 297 states have (on average 1.1919191919191918) internal successors, (354), 310 states have internal predecessors, (354), 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 02:07:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 354 transitions. [2021-11-07 02:07:07,410 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 354 transitions. Word has length 91 [2021-11-07 02:07:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:07,411 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 354 transitions. [2021-11-07 02:07:07,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 02:07:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 354 transitions. [2021-11-07 02:07:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 02:07:07,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:07,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:07,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:07,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:07,638 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1368060291, now seen corresponding path program 1 times [2021-11-07 02:07:07,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:07,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877616057] [2021-11-07 02:07:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:07,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:07,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:07,646 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:07,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:07:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:12,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1883 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:07:12,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:13,231 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 02:07:13,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:13,409 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 02:07:13,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:13,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877616057] [2021-11-07 02:07:13,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877616057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:13,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:13,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:13,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430511939] [2021-11-07 02:07:13,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:13,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:13,411 INFO L87 Difference]: Start difference. First operand 311 states and 354 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 02:07:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:13,566 INFO L93 Difference]: Finished difference Result 370 states and 435 transitions. [2021-11-07 02:07:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 92 [2021-11-07 02:07:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:13,569 INFO L225 Difference]: With dead ends: 370 [2021-11-07 02:07:13,570 INFO L226 Difference]: Without dead ends: 364 [2021-11-07 02:07:13,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 180 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 02:07:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-07 02:07:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 305. [2021-11-07 02:07:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 294 states have (on average 1.183673469387755) internal successors, (348), 304 states have internal predecessors, (348), 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 02:07:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 348 transitions. [2021-11-07 02:07:13,595 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 348 transitions. Word has length 92 [2021-11-07 02:07:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:13,595 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 348 transitions. [2021-11-07 02:07:13,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 02:07:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 348 transitions. [2021-11-07 02:07:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 02:07:13,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:13,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:13,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:13,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:13,822 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -287666046, now seen corresponding path program 1 times [2021-11-07 02:07:13,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:13,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922994877] [2021-11-07 02:07:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:13,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:13,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:13,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:07:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:19,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:19,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:19,272 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 02:07:19,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:19,473 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 02:07:19,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:19,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922994877] [2021-11-07 02:07:19,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922994877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:19,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:19,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:07:19,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807917573] [2021-11-07 02:07:19,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:07:19,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:19,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:07:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:07:19,476 INFO L87 Difference]: Start difference. First operand 305 states and 348 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 02:07:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:19,952 INFO L93 Difference]: Finished difference Result 835 states and 999 transitions. [2021-11-07 02:07:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:07:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 99 [2021-11-07 02:07:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:19,958 INFO L225 Difference]: With dead ends: 835 [2021-11-07 02:07:19,958 INFO L226 Difference]: Without dead ends: 833 [2021-11-07 02:07:19,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:07:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-11-07 02:07:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 303. [2021-11-07 02:07:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 293 states have (on average 1.180887372013652) internal successors, (346), 302 states have internal predecessors, (346), 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 02:07:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 346 transitions. [2021-11-07 02:07:19,990 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 346 transitions. Word has length 99 [2021-11-07 02:07:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:19,990 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 346 transitions. [2021-11-07 02:07:19,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 02:07:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 346 transitions. [2021-11-07 02:07:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:07:19,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:19,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:20,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 02:07:20,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:20,218 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -722688819, now seen corresponding path program 1 times [2021-11-07 02:07:20,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:20,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099351648] [2021-11-07 02:07:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:20,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:20,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:20,222 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:20,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:07:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:25,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 02:07:25,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:26,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-07 02:07:26,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-07 02:07:27,090 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 02:07:27,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:27,793 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 02:07:27,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-07 02:07:27,814 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-07 02:07:27,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 02:07:27,936 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 02:07:27,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:27,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099351648] [2021-11-07 02:07:27,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099351648] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:27,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:27,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-07 02:07:27,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871887466] [2021-11-07 02:07:27,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:07:27,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:27,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:07:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:07:27,940 INFO L87 Difference]: Start difference. First operand 303 states and 346 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 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 02:07:47,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:47,762 INFO L93 Difference]: Finished difference Result 622 states and 710 transitions. [2021-11-07 02:07:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 02:07:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 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 103 [2021-11-07 02:07:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:47,767 INFO L225 Difference]: With dead ends: 622 [2021-11-07 02:07:47,767 INFO L226 Difference]: Without dead ends: 436 [2021-11-07 02:07:47,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 02:07:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-07 02:07:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 303. [2021-11-07 02:07:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 293 states have (on average 1.1774744027303754) internal successors, (345), 302 states have internal predecessors, (345), 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 02:07:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2021-11-07 02:07:47,799 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 103 [2021-11-07 02:07:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:47,799 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2021-11-07 02:07:47,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 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 02:07:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2021-11-07 02:07:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 02:07:47,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:47,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:47,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 02:07:48,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:48,014 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:48,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035421, now seen corresponding path program 1 times [2021-11-07 02:07:48,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:48,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877228143] [2021-11-07 02:07:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:48,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:48,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:48,018 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:48,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:07:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:53,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:07:53,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:54,382 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 02:07:54,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:54,858 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 02:07:54,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:54,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877228143] [2021-11-07 02:07:54,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877228143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:54,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:54,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-07 02:07:54,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698169136] [2021-11-07 02:07:54,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:07:54,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:07:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:07:54,861 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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 02:07:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:55,396 INFO L93 Difference]: Finished difference Result 773 states and 903 transitions. [2021-11-07 02:07:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:07:55,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) Word has length 104 [2021-11-07 02:07:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:55,401 INFO L225 Difference]: With dead ends: 773 [2021-11-07 02:07:55,401 INFO L226 Difference]: Without dead ends: 592 [2021-11-07 02:07:55,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:07:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-07 02:07:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 313. [2021-11-07 02:07:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 303 states have (on average 1.1815181518151816) internal successors, (358), 312 states have internal predecessors, (358), 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 02:07:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 358 transitions. [2021-11-07 02:07:55,438 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 358 transitions. Word has length 104 [2021-11-07 02:07:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:55,438 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 358 transitions. [2021-11-07 02:07:55,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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 02:07:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 358 transitions. [2021-11-07 02:07:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 02:07:55,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:55,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:55,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:55,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:55,658 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:55,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1509886562, now seen corresponding path program 1 times [2021-11-07 02:07:55,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:55,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906670260] [2021-11-07 02:07:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:55,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:55,662 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:55,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:08:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:00,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:00,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:01,174 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 02:08:01,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:01,380 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 02:08:01,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:01,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906670260] [2021-11-07 02:08:01,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906670260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:01,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:01,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:08:01,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980339346] [2021-11-07 02:08:01,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:01,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:01,381 INFO L87 Difference]: Start difference. First operand 313 states and 358 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 02:08:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:01,420 INFO L93 Difference]: Finished difference Result 415 states and 476 transitions. [2021-11-07 02:08:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:01,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-07 02:08:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:01,422 INFO L225 Difference]: With dead ends: 415 [2021-11-07 02:08:01,422 INFO L226 Difference]: Without dead ends: 313 [2021-11-07 02:08:01,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 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 02:08:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-07 02:08:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-07 02:08:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 303 states have (on average 1.174917491749175) internal successors, (356), 312 states have internal predecessors, (356), 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 02:08:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 356 transitions. [2021-11-07 02:08:01,458 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 356 transitions. Word has length 104 [2021-11-07 02:08:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:01,459 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 356 transitions. [2021-11-07 02:08:01,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 02:08:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 356 transitions. [2021-11-07 02:08:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 02:08:01,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:01,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:01,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:01,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:01,682 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:08:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1251721124, now seen corresponding path program 1 times [2021-11-07 02:08:01,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:01,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258950033] [2021-11-07 02:08:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:01,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:01,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:01,688 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:01,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:08:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:07,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:07,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:07,317 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 02:08:07,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:07,606 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 02:08:07,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:07,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258950033] [2021-11-07 02:08:07,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258950033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:07,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:07,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:08:07,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47428602] [2021-11-07 02:08:07,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:07,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:07,608 INFO L87 Difference]: Start difference. First operand 313 states and 356 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 02:08:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:07,717 INFO L93 Difference]: Finished difference Result 609 states and 698 transitions. [2021-11-07 02:08:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:08:07,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 104 [2021-11-07 02:08:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:07,721 INFO L225 Difference]: With dead ends: 609 [2021-11-07 02:08:07,721 INFO L226 Difference]: Without dead ends: 511 [2021-11-07 02:08:07,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:08:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-07 02:08:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 315. [2021-11-07 02:08:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 305 states have (on average 1.1737704918032787) internal successors, (358), 314 states have internal predecessors, (358), 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 02:08:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 358 transitions. [2021-11-07 02:08:07,759 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 358 transitions. Word has length 104 [2021-11-07 02:08:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:07,759 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 358 transitions. [2021-11-07 02:08:07,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 02:08:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 358 transitions. [2021-11-07 02:08:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 02:08:07,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:07,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:07,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:07,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:07,976 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:08:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -571662754, now seen corresponding path program 1 times [2021-11-07 02:08:07,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:07,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067205675] [2021-11-07 02:08:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:07,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:07,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:07,980 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:07,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25477e27-4453-4942-8a29-9299072d6da1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:10:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:54,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-07 02:10:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:55,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:55,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 109 [2021-11-07 02:10:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:58,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:58,518 INFO L354 Elim1Store]: treesize reduction 232, result has 27.7 percent of original size [2021-11-07 02:10:58,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 50 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 533 treesize of output 357 [2021-11-07 02:11:00,292 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:00,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 507 treesize of output 411 [2021-11-07 02:11:00,770 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 02:11:00,770 INFO L328 TraceCheckSpWp]: Computing backward predicates...