./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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 edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:30,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:30,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:30,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:30,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:30,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:30,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:30,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:30,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:30,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:30,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:30,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:30,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:30,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:30,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:30,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:30,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:30,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:30,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:30,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:30,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:30,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:30,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:30,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:30,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:30,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:30,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:30,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:30,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:30,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:30,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:30,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:30,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:30,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:30,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:30,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:30,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:30,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:30,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:30,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:30,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:30,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:29:30,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:30,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:30,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:30,361 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:30,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:30,361 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:30,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:29:30,362 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:30,362 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:30,362 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:29:30,363 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:29:30,364 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:30,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:29:30,364 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:29:30,365 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:29:30,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:30,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:29:30,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:30,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:30,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:30,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:30,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:30,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:30,367 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:30,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:30,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:30,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:30,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:30,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:30,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:30,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:30,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:29:30,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:29:30,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:30,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:30,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:30,371 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-07 01:29:30,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:30,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:30,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:30,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:30,661 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:30,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-07 01:29:30,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/0b8496150/d2055e96777c49eebe3153a9ab476678/FLAG2402acc50 [2021-11-07 01:29:31,527 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:31,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-07 01:29:31,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/0b8496150/d2055e96777c49eebe3153a9ab476678/FLAG2402acc50 [2021-11-07 01:29:32,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/0b8496150/d2055e96777c49eebe3153a9ab476678 [2021-11-07 01:29:32,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:32,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:32,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:32,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:32,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:32,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:32" (1/1) ... [2021-11-07 01:29:32,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6064bb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:32, skipping insertion in model container [2021-11-07 01:29:32,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:32" (1/1) ... [2021-11-07 01:29:32,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:32,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:32,533 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-07 01:29:32,547 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-07 01:29:32,580 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:32,594 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:33,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,743 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,744 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,745 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,746 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:33,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:34,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:34,272 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:34,273 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:34,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:34,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:34,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:34,276 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:34,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:34,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:34,514 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:34,898 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,937 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:34,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:35,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:35,067 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:29:35,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2949d1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:35, skipping insertion in model container [2021-11-07 01:29:35,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:35,068 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:29:35,070 INFO L168 Benchmark]: Toolchain (without parser) took 3036.51 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 48.9 MB in the beginning and 54.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:35,071 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 67.0 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:35,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3034.17 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 48.6 MB in the beginning and 54.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:35,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 94.4 MB. Free memory was 67.0 MB in the beginning and 67.0 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3034.17 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 48.6 MB in the beginning and 54.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 19.4 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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 edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:37,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:37,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:37,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:37,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:37,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:37,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:37,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:37,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:37,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:37,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:37,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:37,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:37,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:37,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:37,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:37,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:37,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:37,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:37,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:37,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:37,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:37,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:37,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:37,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:37,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:37,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:37,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:37,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:37,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:37,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:37,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:37,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:37,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:37,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:37,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:37,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:37,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:37,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:37,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:37,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:37,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:29:37,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:37,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:37,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:37,321 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:37,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:37,322 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:37,323 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:37,323 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:37,323 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:37,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:37,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:37,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:37,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:37,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:37,326 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:37,326 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:29:37,326 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:29:37,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:37,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:37,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:37,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:37,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:29:37,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:37,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:37,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:37,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:37,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:37,329 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:29:37,330 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:37,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:37,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:37,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:37,331 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-07 01:29:37,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:37,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:37,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:37,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:37,735 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:37,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-07 01:29:37,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/443310a26/e056c1eb159a418ca09161fbf5526fee/FLAG02a3d2584 [2021-11-07 01:29:38,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:38,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-07 01:29:38,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/443310a26/e056c1eb159a418ca09161fbf5526fee/FLAG02a3d2584 [2021-11-07 01:29:39,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/data/443310a26/e056c1eb159a418ca09161fbf5526fee [2021-11-07 01:29:39,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:39,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:39,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:39,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:39,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:39,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:39" (1/1) ... [2021-11-07 01:29:39,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99e4f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:39, skipping insertion in model container [2021-11-07 01:29:39,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:39" (1/1) ... [2021-11-07 01:29:39,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:39,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:39,661 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-07 01:29:39,670 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-07 01:29:39,704 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:39,718 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:41,104 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,115 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,116 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,117 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,134 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,143 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,143 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:41,714 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:41,715 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:41,716 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:41,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:41,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:41,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:41,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:41,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:41,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:41,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:41,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:42,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,408 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:42,530 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:42,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:42,627 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-07 01:29:42,628 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-07 01:29:42,629 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:42,630 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:42,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,694 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,694 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,694 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:42,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:42,742 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:42,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:42,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:42,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:42,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:42,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:42,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:42,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:42,796 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:42,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,918 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:42,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:42,999 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:43,023 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-07 01:29:43,024 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_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-07 01:29:43,026 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:29:43,027 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:29:43,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,100 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,101 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,101 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,101 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:29:43,134 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:29:43,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:29:43,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:29:43,138 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:29:43,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:29:43,139 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:29:43,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:29:43,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:29:43,141 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:29:43,159 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:29:43,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:29:43,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:43,686 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:43,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43 WrapperNode [2021-11-07 01:29:43,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:43,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:43,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:43,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:43,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:43,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:43,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:43,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:43,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:43,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:43,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:43,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:43,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:43,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:44,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:44,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:44,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:44,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:44,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:44,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:44,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:44,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (1/1) ... [2021-11-07 01:29:44,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:44,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:44,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:44,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-07 01:29:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:29:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:29:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 01:29:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 01:29:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:29:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:29:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:29:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:29:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-07 01:29:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:29:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:30:04,631 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !true; [2021-11-07 01:30:04,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:30:04,641 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-07 01:30:04,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:30:04 BoogieIcfgContainer [2021-11-07 01:30:04,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:30:04,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:30:04,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:30:04,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:30:04,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:39" (1/3) ... [2021-11-07 01:30:04,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e9d1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:30:04, skipping insertion in model container [2021-11-07 01:30:04,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:43" (2/3) ... [2021-11-07 01:30:04,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e9d1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:30:04, skipping insertion in model container [2021-11-07 01:30:04,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:30:04" (3/3) ... [2021-11-07 01:30:04,668 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2021-11-07 01:30:04,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:30:04,675 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:30:04,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:30:04,730 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 01:30:04,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:30:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:30:04,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:04,754 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:04,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:04,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1956444402, now seen corresponding path program 1 times [2021-11-07 01:30:04,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:04,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915877198] [2021-11-07 01:30:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:04,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:04,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:04,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:04,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:30:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:08,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:30:08,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:08,882 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 01:30:08,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:09,110 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 01:30:09,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:09,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915877198] [2021-11-07 01:30:09,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915877198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:09,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:09,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:30:09,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966030474] [2021-11-07 01:30:09,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:30:09,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:30:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:30:09,141 INFO L87 Difference]: Start difference. First operand has 113 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:09,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:09,203 INFO L93 Difference]: Finished difference Result 221 states and 294 transitions. [2021-11-07 01:30:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:30:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:30:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:09,215 INFO L225 Difference]: With dead ends: 221 [2021-11-07 01:30:09,215 INFO L226 Difference]: Without dead ends: 106 [2021-11-07 01:30:09,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:30:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-07 01:30:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-07 01:30:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 105 states have internal predecessors, (129), 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 01:30:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-07 01:30:09,286 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 31 [2021-11-07 01:30:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:09,287 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-07 01:30:09,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-07 01:30:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:30:09,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:09,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:09,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:09,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:09,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1279980632, now seen corresponding path program 1 times [2021-11-07 01:30:09,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:09,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847947525] [2021-11-07 01:30:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:09,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:09,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:09,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:09,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:30:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:30:13,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:13,600 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 01:30:13,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:13,818 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 01:30:13,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:13,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847947525] [2021-11-07 01:30:13,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847947525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:13,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:13,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:30:13,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100205755] [2021-11-07 01:30:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:30:13,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:30:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:30:13,823 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:16,118 INFO L93 Difference]: Finished difference Result 281 states and 346 transitions. [2021-11-07 01:30:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:30:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:30:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:16,122 INFO L225 Difference]: With dead ends: 281 [2021-11-07 01:30:16,122 INFO L226 Difference]: Without dead ends: 194 [2021-11-07 01:30:16,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:30:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-07 01:30:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 109. [2021-11-07 01:30:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 108 states have internal predecessors, (131), 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 01:30:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-11-07 01:30:16,146 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 31 [2021-11-07 01:30:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:16,146 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-11-07 01:30:16,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-11-07 01:30:16,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:30:16,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:16,149 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] [2021-11-07 01:30:16,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:16,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:16,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1036449013, now seen corresponding path program 1 times [2021-11-07 01:30:16,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:16,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790800065] [2021-11-07 01:30:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:16,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:16,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:16,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:16,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:30:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:20,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:30:20,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:20,432 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 01:30:20,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:20,543 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 01:30:20,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:20,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790800065] [2021-11-07 01:30:20,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790800065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:20,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:20,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:30:20,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418005401] [2021-11-07 01:30:20,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:30:20,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:30:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:30:20,546 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 01:30:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:24,860 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2021-11-07 01:30:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:24,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-11-07 01:30:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:24,866 INFO L225 Difference]: With dead ends: 192 [2021-11-07 01:30:24,870 INFO L226 Difference]: Without dead ends: 111 [2021-11-07 01:30:24,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 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 01:30:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-07 01:30:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-07 01:30:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 110 states have internal predecessors, (133), 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 01:30:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2021-11-07 01:30:24,896 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 32 [2021-11-07 01:30:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:24,896 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2021-11-07 01:30:24,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 01:30:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2021-11-07 01:30:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:30:24,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:24,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:24,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:25,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:25,118 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:25,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1718799183, now seen corresponding path program 1 times [2021-11-07 01:30:25,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:25,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000452173] [2021-11-07 01:30:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:25,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:25,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:25,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:25,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:30:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:29,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:30:29,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:29,362 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 01:30:29,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:29,475 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 01:30:29,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:29,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000452173] [2021-11-07 01:30:29,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000452173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:29,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:29,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:30:29,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149777231] [2021-11-07 01:30:29,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:30:29,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:30:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:30:29,478 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:31,624 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2021-11-07 01:30:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:31,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:30:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:31,627 INFO L225 Difference]: With dead ends: 205 [2021-11-07 01:30:31,627 INFO L226 Difference]: Without dead ends: 192 [2021-11-07 01:30:31,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:30:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-07 01:30:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 113. [2021-11-07 01:30:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 112 states have internal predecessors, (135), 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 01:30:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-11-07 01:30:31,642 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 34 [2021-11-07 01:30:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:31,643 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-11-07 01:30:31,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2021-11-07 01:30:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:30:31,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:31,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:31,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:31,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:31,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -216743141, now seen corresponding path program 1 times [2021-11-07 01:30:31,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:31,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41545157] [2021-11-07 01:30:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:31,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:31,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:31,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:30:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:35,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:30:35,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:35,690 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 01:30:35,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:35,821 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 01:30:35,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:35,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41545157] [2021-11-07 01:30:35,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41545157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:35,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:35,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:30:35,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197921343] [2021-11-07 01:30:35,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:30:35,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:30:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:30:35,824 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 01:30:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:35,915 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2021-11-07 01:30:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:35,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:30:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:35,917 INFO L225 Difference]: With dead ends: 126 [2021-11-07 01:30:35,917 INFO L226 Difference]: Without dead ends: 113 [2021-11-07 01:30:35,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 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 01:30:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-07 01:30:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-11-07 01:30:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 states have internal predecessors, (131), 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 01:30:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-11-07 01:30:35,930 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 34 [2021-11-07 01:30:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:35,931 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-11-07 01:30:35,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 01:30:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-11-07 01:30:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 01:30:35,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:35,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:35,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:36,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:36,144 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash 976987443, now seen corresponding path program 1 times [2021-11-07 01:30:36,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:36,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202849841] [2021-11-07 01:30:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:36,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:36,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:36,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:36,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:30:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:40,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:30:40,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:40,675 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 01:30:40,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:40,824 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 01:30:40,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:40,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202849841] [2021-11-07 01:30:40,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202849841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:40,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:40,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:30:40,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046304593] [2021-11-07 01:30:40,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:30:40,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:30:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:30:40,826 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:41,194 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2021-11-07 01:30:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:30:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 01:30:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:41,197 INFO L225 Difference]: With dead ends: 243 [2021-11-07 01:30:41,197 INFO L226 Difference]: Without dead ends: 178 [2021-11-07 01:30:41,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 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 01:30:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-07 01:30:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2021-11-07 01:30:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 113 states have internal predecessors, (134), 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 01:30:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2021-11-07 01:30:41,240 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 42 [2021-11-07 01:30:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:41,241 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2021-11-07 01:30:41,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2021-11-07 01:30:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:30:41,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:41,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:41,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:41,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:41,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash 698461335, now seen corresponding path program 1 times [2021-11-07 01:30:41,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:41,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438667106] [2021-11-07 01:30:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:41,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:41,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:41,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:41,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:30:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:45,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:30:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:45,895 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 01:30:45,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:46,038 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 01:30:46,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:46,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438667106] [2021-11-07 01:30:46,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438667106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:46,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:46,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:30:46,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063869721] [2021-11-07 01:30:46,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:30:46,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:30:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:30:46,040 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:48,278 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2021-11-07 01:30:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:48,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:30:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:48,281 INFO L225 Difference]: With dead ends: 142 [2021-11-07 01:30:48,281 INFO L226 Difference]: Without dead ends: 114 [2021-11-07 01:30:48,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:30:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-07 01:30:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-07 01:30:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 113 states have internal predecessors, (132), 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 01:30:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2021-11-07 01:30:48,293 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 44 [2021-11-07 01:30:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:48,293 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2021-11-07 01:30:48,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2021-11-07 01:30:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:30:48,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:48,295 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] [2021-11-07 01:30:48,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:48,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:48,516 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1733159736, now seen corresponding path program 1 times [2021-11-07 01:30:48,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:48,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944700712] [2021-11-07 01:30:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:48,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:48,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:48,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:30:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:53,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:30:53,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:53,236 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 01:30:53,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:53,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:53,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944700712] [2021-11-07 01:30:53,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944700712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:53,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:53,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:30:53,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140376288] [2021-11-07 01:30:53,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:30:53,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:30:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:30:53,462 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 01:30:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:53,571 INFO L93 Difference]: Finished difference Result 179 states and 207 transitions. [2021-11-07 01:30:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:53,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 57 [2021-11-07 01:30:53,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:53,576 INFO L225 Difference]: With dead ends: 179 [2021-11-07 01:30:53,576 INFO L226 Difference]: Without dead ends: 114 [2021-11-07 01:30:53,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 01:30:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-07 01:30:53,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2021-11-07 01:30:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.165137614678899) internal successors, (127), 110 states have internal predecessors, (127), 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 01:30:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-11-07 01:30:53,588 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 57 [2021-11-07 01:30:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:53,588 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-11-07 01:30:53,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 01:30:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-11-07 01:30:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:30:53,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:53,590 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] [2021-11-07 01:30:53,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:53,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:53,804 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1870539561, now seen corresponding path program 1 times [2021-11-07 01:30:53,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:53,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099812424] [2021-11-07 01:30:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:53,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:53,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:53,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:53,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:30:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:58,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:30:58,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:58,893 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 01:30:58,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:59,054 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 01:30:59,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:59,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099812424] [2021-11-07 01:30:59,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099812424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:59,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:59,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:30:59,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805240105] [2021-11-07 01:30:59,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:30:59,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:30:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:30:59,056 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 01:30:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:59,351 INFO L93 Difference]: Finished difference Result 208 states and 238 transitions. [2021-11-07 01:30:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:30:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-11-07 01:30:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:59,353 INFO L225 Difference]: With dead ends: 208 [2021-11-07 01:30:59,353 INFO L226 Difference]: Without dead ends: 178 [2021-11-07 01:30:59,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 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 01:30:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-07 01:30:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2021-11-07 01:30:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1607142857142858) internal successors, (130), 113 states have internal predecessors, (130), 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 01:30:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-11-07 01:30:59,364 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 60 [2021-11-07 01:30:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:59,364 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-11-07 01:30:59,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 01:30:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-11-07 01:30:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:30:59,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:59,365 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] [2021-11-07 01:30:59,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:59,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:59,588 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash 22795227, now seen corresponding path program 1 times [2021-11-07 01:30:59,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:59,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341484338] [2021-11-07 01:30:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:59,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:59,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:59,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:59,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:31:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:04,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:31:04,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:04,791 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 01:31:04,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:04,970 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 01:31:04,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:04,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341484338] [2021-11-07 01:31:04,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341484338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:04,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:04,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:31:04,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992970694] [2021-11-07 01:31:04,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:04,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:04,972 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 01:31:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:07,164 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2021-11-07 01:31:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-07 01:31:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:07,211 INFO L225 Difference]: With dead ends: 144 [2021-11-07 01:31:07,211 INFO L226 Difference]: Without dead ends: 114 [2021-11-07 01:31:07,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 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 01:31:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-07 01:31:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2021-11-07 01:31:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 110 states have internal predecessors, (126), 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 01:31:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2021-11-07 01:31:07,220 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 62 [2021-11-07 01:31:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:07,220 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2021-11-07 01:31:07,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 01:31:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2021-11-07 01:31:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:31:07,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:07,221 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] [2021-11-07 01:31:07,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:07,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:07,428 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:31:07,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -306396640, now seen corresponding path program 1 times [2021-11-07 01:31:07,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:07,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883539822] [2021-11-07 01:31:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:07,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:07,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:07,432 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:07,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:31:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:12,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:31:12,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:12,691 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 01:31:12,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:12,891 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 01:31:12,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:12,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883539822] [2021-11-07 01:31:12,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883539822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:12,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:12,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:31:12,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998607743] [2021-11-07 01:31:12,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:31:12,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:31:12,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:31:12,894 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 01:31:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:13,049 INFO L93 Difference]: Finished difference Result 209 states and 240 transitions. [2021-11-07 01:31:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:31:13,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-07 01:31:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:13,051 INFO L225 Difference]: With dead ends: 209 [2021-11-07 01:31:13,052 INFO L226 Difference]: Without dead ends: 178 [2021-11-07 01:31:13,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:31:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-07 01:31:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2021-11-07 01:31:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 113 states have internal predecessors, (129), 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 01:31:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2021-11-07 01:31:13,062 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 66 [2021-11-07 01:31:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:13,063 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2021-11-07 01:31:13,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 01:31:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2021-11-07 01:31:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:31:13,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:13,064 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] [2021-11-07 01:31:13,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:13,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:13,265 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:31:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1530120476, now seen corresponding path program 1 times [2021-11-07 01:31:13,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:13,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079821785] [2021-11-07 01:31:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:13,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:13,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:13,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:31:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:18,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:31:18,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:18,723 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 01:31:18,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:18,973 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 01:31:18,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:18,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079821785] [2021-11-07 01:31:18,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079821785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:18,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:18,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:31:18,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20363132] [2021-11-07 01:31:18,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:31:18,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:18,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:31:18,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:31:18,975 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 01:31:21,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:21,469 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-11-07 01:31:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:31:21,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 68 [2021-11-07 01:31:21,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:21,470 INFO L225 Difference]: With dead ends: 150 [2021-11-07 01:31:21,470 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:31:21,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:31:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:31:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:31:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 108 states have internal predecessors, (122), 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 01:31:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2021-11-07 01:31:21,481 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 68 [2021-11-07 01:31:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:21,481 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2021-11-07 01:31:21,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 01:31:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2021-11-07 01:31:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:31:21,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:21,483 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 01:31:21,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:21,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:21,700 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:31:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash 245501011, now seen corresponding path program 1 times [2021-11-07 01:31:21,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:21,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112565517] [2021-11-07 01:31:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:21,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:21,704 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:21,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:31:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:27,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:31:27,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:27,488 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 01:31:27,887 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 01:31:27,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:28,129 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 01:31:28,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:28,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112565517] [2021-11-07 01:31:28,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112565517] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:28,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:28,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 14 [2021-11-07 01:31:28,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921313320] [2021-11-07 01:31:28,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:31:28,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:28,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:31:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:31:28,131 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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 01:31:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:45,760 INFO L93 Difference]: Finished difference Result 134 states and 151 transitions. [2021-11-07 01:31:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:31:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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 01:31:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:45,762 INFO L225 Difference]: With dead ends: 134 [2021-11-07 01:31:45,762 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 01:31:45,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:31:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 01:31:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2021-11-07 01:31:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 110 states have internal predecessors, (124), 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 01:31:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2021-11-07 01:31:45,771 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 76 [2021-11-07 01:31:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:45,771 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2021-11-07 01:31:45,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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 01:31:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2021-11-07 01:31:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:31:45,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:45,773 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 01:31:45,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:45,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:45,980 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:31:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2020508373, now seen corresponding path program 1 times [2021-11-07 01:31:45,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:45,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763698690] [2021-11-07 01:31:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:45,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:45,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:45,985 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:45,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:31:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:51,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:31:51,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:52,071 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 01:31:52,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:52,654 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 01:31:52,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:52,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763698690] [2021-11-07 01:31:52,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763698690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:52,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:52,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:31:52,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243362064] [2021-11-07 01:31:52,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:52,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:52,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:52,657 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 01:31:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:52,736 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2021-11-07 01:31:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 01:31:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:52,738 INFO L225 Difference]: With dead ends: 133 [2021-11-07 01:31:52,738 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:31:52,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 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 01:31:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:31:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:31:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 108 states have internal predecessors, (120), 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 01:31:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2021-11-07 01:31:52,748 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 76 [2021-11-07 01:31:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:52,749 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2021-11-07 01:31:52,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 01:31:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2021-11-07 01:31:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:31:52,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:52,750 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] [2021-11-07 01:31:52,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:52,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:31:52,972 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:31:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1761312274, now seen corresponding path program 1 times [2021-11-07 01:31:52,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:31:52,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973458963] [2021-11-07 01:31:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:52,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:31:52,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:31:52,978 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:31:52,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:31:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:58,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:31:58,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:58,863 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 01:31:59,060 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 01:31:59,184 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 01:31:59,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:59,434 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 01:31:59,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:59,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973458963] [2021-11-07 01:31:59,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973458963] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:59,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:59,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 13 [2021-11-07 01:31:59,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739718312] [2021-11-07 01:31:59,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:31:59,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:31:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:31:59,437 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 01:32:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:15,077 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2021-11-07 01:32:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:32:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 78 [2021-11-07 01:32:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:15,086 INFO L225 Difference]: With dead ends: 134 [2021-11-07 01:32:15,086 INFO L226 Difference]: Without dead ends: 114 [2021-11-07 01:32:15,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:32:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-07 01:32:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2021-11-07 01:32:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 108 states have internal predecessors, (119), 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 01:32:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-11-07 01:32:15,097 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 78 [2021-11-07 01:32:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:15,098 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-11-07 01:32:15,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 01:32:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-11-07 01:32:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:32:15,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:15,099 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] [2021-11-07 01:32:15,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-07 01:32:15,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:32:15,312 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1347080187, now seen corresponding path program 1 times [2021-11-07 01:32:15,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:32:15,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756210477] [2021-11-07 01:32:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:15,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:32:15,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:32:15,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:32:15,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5cc45c6-9f90-4e46-b6f1-5506ee763e23/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process