./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_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_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/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_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/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_98454b4f-4456-4357-a447-1dc5ee164bee/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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:44:50,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:44:50,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:44:50,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:44:50,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:44:50,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:44:50,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:44:50,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:44:50,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:44:50,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:44:50,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:44:50,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:44:50,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:44:50,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:44:50,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:44:50,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:44:50,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:44:50,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:44:50,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:44:50,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:44:50,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:44:50,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:44:50,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:44:50,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:44:50,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:44:50,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:44:50,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:44:50,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:44:50,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:44:50,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:44:50,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:44:50,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:44:50,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:44:50,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:44:50,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:44:50,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:44:50,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:44:50,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:44:50,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:44:50,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:44:50,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:44:50,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:44:50,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:44:50,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:44:50,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:44:50,487 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:44:50,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:44:50,487 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:44:50,488 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:44:50,494 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:44:50,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:44:50,495 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:44:50,496 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:44:50,496 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:44:50,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:44:50,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:44:50,497 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:44:50,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:44:50,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:44:50,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:44:50,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:44:50,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:44:50,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:44:50,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:44:50,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:44:50,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:44:50,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:44:50,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:44:50,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:44:50,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:44:50,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:44:50,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:44:50,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:44:50,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:44:50,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:44:50,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:44:50,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:44:50,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:44:50,506 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_98454b4f-4456-4357-a447-1dc5ee164bee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-07 01:44:50,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:44:50,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:44:50,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:44:50,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:44:50,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:44:50,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-07 01:44:50,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/261531f13/573a0224d48a4fd4a2e0a99d118a4279/FLAG7d3cf874f [2021-11-07 01:44:51,892 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:44:51,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-07 01:44:51,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/261531f13/573a0224d48a4fd4a2e0a99d118a4279/FLAG7d3cf874f [2021-11-07 01:44:52,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/261531f13/573a0224d48a4fd4a2e0a99d118a4279 [2021-11-07 01:44:52,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:44:52,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:44:52,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:52,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:44:52,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:44:52,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab68c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52, skipping insertion in model container [2021-11-07 01:44:52,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:44:52,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:44:52,894 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_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-07 01:44:52,904 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_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-07 01:44:52,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:44:52,941 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:44:54,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:54,694 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:44:54,695 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:44:54,697 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:44:54,698 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:44:54,700 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:44:54,701 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:44:54,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:44:54,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:44:54,703 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:44:54,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:44:55,032 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:44:55,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:55,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:44:55,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:44:55,281 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 01:44:55,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56b5ae53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:55, skipping insertion in model container [2021-11-07 01:44:55,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:55,284 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:44:55,287 INFO L168 Benchmark]: Toolchain (without parser) took 2918.67 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 52.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:55,288 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 59.1 MB in the beginning and 59.1 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:44:55,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2915.78 ms. Allocated memory is still 102.8 MB. Free memory was 74.4 MB in the beginning and 52.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:55,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 59.1 MB in the beginning and 59.1 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2915.78 ms. Allocated memory is still 102.8 MB. Free memory was 74.4 MB in the beginning and 52.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6984]: 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_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/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_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/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_98454b4f-4456-4357-a447-1dc5ee164bee/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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:44:57,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:44:57,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:44:57,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:44:57,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:44:57,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:44:57,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:44:57,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:44:57,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:44:57,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:44:57,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:44:57,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:44:57,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:44:57,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:44:57,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:44:57,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:44:57,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:44:57,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:44:57,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:44:57,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:44:57,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:44:57,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:44:57,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:44:57,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:44:57,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:44:57,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:44:57,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:44:57,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:44:57,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:44:57,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:44:57,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:44:57,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:44:57,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:44:57,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:44:57,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:44:57,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:44:57,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:44:57,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:44:57,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:44:57,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:44:57,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:44:57,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:44:57,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:44:57,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:44:57,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:44:57,930 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:44:57,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:44:57,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:44:57,931 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:44:57,931 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:44:57,932 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:44:57,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:44:57,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:44:57,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:44:57,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:44:57,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:44:57,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:44:57,936 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:44:57,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:44:57,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:44:57,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:44:57,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:44:57,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:44:57,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:44:57,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:44:57,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:44:57,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:44:57,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:44:57,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:44:57,939 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:44:57,939 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:44:57,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:44:57,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:44:57,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:44:57,940 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_98454b4f-4456-4357-a447-1dc5ee164bee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-07 01:44:58,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:44:58,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:44:58,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:44:58,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:44:58,387 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:44:58,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-07 01:44:58,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/62fc5811c/d194903931a94c8cb8dcaa8f02d3e54d/FLAGa9c525ec4 [2021-11-07 01:44:59,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:44:59,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-07 01:44:59,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/62fc5811c/d194903931a94c8cb8dcaa8f02d3e54d/FLAGa9c525ec4 [2021-11-07 01:44:59,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/data/62fc5811c/d194903931a94c8cb8dcaa8f02d3e54d [2021-11-07 01:44:59,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:44:59,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:44:59,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:59,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:44:59,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:44:59,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:59" (1/1) ... [2021-11-07 01:44:59,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477d277d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59, skipping insertion in model container [2021-11-07 01:44:59,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:59" (1/1) ... [2021-11-07 01:44:59,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:00,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:00,407 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_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-07 01:45:00,419 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_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-07 01:45:00,459 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:45:00,469 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:45:02,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,114 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,116 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,117 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,143 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:02,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:45:02,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:45:02,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:45:02,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:45:02,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:45:02,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:45:02,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:45:02,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:45:02,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:45:02,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:45:02,990 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:45:03,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:03,265 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:45:03,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:03,326 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_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-07 01:45:03,327 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_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-07 01:45:03,330 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:45:03,331 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:45:03,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,410 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,411 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,412 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,413 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:45:03,484 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:45:03,498 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:45:03,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:45:03,499 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:45:03,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:45:03,500 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:45:03,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:45:03,501 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:45:03,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:45:03,522 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:45:03,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:03,642 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:45:03,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-07 01:45:03,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-07 01:45:03,659 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:45:03,660 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:45:03,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,700 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:45:03,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:45:03,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:45:03,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:45:03,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:45:03,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:45:03,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:45:03,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:45:03,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:45:03,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:45:03,770 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:45:03,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:45:03,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:04,229 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:45:04,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04 WrapperNode [2021-11-07 01:45:04,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:04,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:04,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:45:04,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:45:04,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:04,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:45:04,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:45:04,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:45:04,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:45:04,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:45:04,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:45:04,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:45:04,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (1/1) ... [2021-11-07 01:45:04,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:04,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:45:04,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:45:04,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:45:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:45:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:45:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:45:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:45:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:45:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:45:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:45:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:45:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:45:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:45:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:45:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:45:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:45:20,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:45:20,848 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-07 01:45:20,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:20 BoogieIcfgContainer [2021-11-07 01:45:20,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:45:20,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:45:20,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:45:20,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:45:20,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:44:59" (1/3) ... [2021-11-07 01:45:20,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43319608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:20, skipping insertion in model container [2021-11-07 01:45:20,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:04" (2/3) ... [2021-11-07 01:45:20,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43319608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:20, skipping insertion in model container [2021-11-07 01:45:20,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:20" (3/3) ... [2021-11-07 01:45:20,864 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2021-11-07 01:45:20,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:45:20,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:45:20,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:45:20,953 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 01:45:20,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:45:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 160 states have internal predecessors, (225), 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 01:45:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:45:20,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:20,989 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 01:45:20,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:45:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1283718026, now seen corresponding path program 1 times [2021-11-07 01:45:21,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:21,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659099977] [2021-11-07 01:45:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:21,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:21,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:21,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:21,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:45:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:25,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:45:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:25,414 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 01:45:25,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:25,587 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 01:45:25,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:25,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659099977] [2021-11-07 01:45:25,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659099977] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:25,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:25,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:45:25,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052957288] [2021-11-07 01:45:25,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:45:25,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:45:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:45:25,635 INFO L87 Difference]: Start difference. First operand has 161 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 160 states have internal predecessors, (225), 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 17.0) internal successors, (34), 2 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 01:45:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:25,690 INFO L93 Difference]: Finished difference Result 318 states and 445 transitions. [2021-11-07 01:45:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:45:25,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 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 01:45:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:25,707 INFO L225 Difference]: With dead ends: 318 [2021-11-07 01:45:25,707 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 01:45:25,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 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 01:45:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 01:45:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-07 01:45:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.36) internal successors, (204), 155 states have internal predecessors, (204), 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 01:45:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 204 transitions. [2021-11-07 01:45:25,762 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 204 transitions. Word has length 34 [2021-11-07 01:45:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:25,763 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 204 transitions. [2021-11-07 01:45:25,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 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 01:45:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 204 transitions. [2021-11-07 01:45:25,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:45:25,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:25,772 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 01:45:25,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:45:25,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:25,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:45:25,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash 27354892, now seen corresponding path program 1 times [2021-11-07 01:45:25,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:25,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133008487] [2021-11-07 01:45:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:25,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:25,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:25,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:45:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:30,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:45:30,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:30,728 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 01:45:30,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:30,945 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 01:45:30,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:30,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133008487] [2021-11-07 01:45:30,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133008487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:30,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:30,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:45:30,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762541731] [2021-11-07 01:45:30,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:45:30,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:45:30,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:45:30,950 INFO L87 Difference]: Start difference. First operand 156 states and 204 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 01:45:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:31,299 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2021-11-07 01:45:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:45:31,304 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 01:45:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:31,306 INFO L225 Difference]: With dead ends: 286 [2021-11-07 01:45:31,306 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 01:45:31,313 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 01:45:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 01:45:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-07 01:45:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 155 states have internal predecessors, (202), 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 01:45:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-11-07 01:45:31,339 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 34 [2021-11-07 01:45:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:31,340 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-11-07 01:45:31,340 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 01:45:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-11-07 01:45:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:45:31,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:31,343 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] [2021-11-07 01:45:31,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:31,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:31,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:45:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2136977490, now seen corresponding path program 1 times [2021-11-07 01:45:31,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:31,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042239422] [2021-11-07 01:45:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:31,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:31,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:31,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:45:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:35,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:45:35,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:36,024 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 01:45:36,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:36,200 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 01:45:36,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:36,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042239422] [2021-11-07 01:45:36,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042239422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:36,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:36,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:45:36,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513589083] [2021-11-07 01:45:36,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:45:36,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:45:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:45:36,203 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 01:45:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:36,746 INFO L93 Difference]: Finished difference Result 347 states and 456 transitions. [2021-11-07 01:45:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:45:36,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2021-11-07 01:45:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:36,750 INFO L225 Difference]: With dead ends: 347 [2021-11-07 01:45:36,750 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 01:45:36,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 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 01:45:36,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 01:45:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 168. [2021-11-07 01:45:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 167 states have internal predecessors, (214), 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 01:45:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 214 transitions. [2021-11-07 01:45:36,769 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 214 transitions. Word has length 46 [2021-11-07 01:45:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:36,769 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 214 transitions. [2021-11-07 01:45:36,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 01:45:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 214 transitions. [2021-11-07 01:45:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:45:36,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:36,772 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] [2021-11-07 01:45:36,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:45:36,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:36,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:45:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1456389932, now seen corresponding path program 1 times [2021-11-07 01:45:36,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:36,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959840276] [2021-11-07 01:45:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:36,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:36,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:36,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:36,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:45:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:45:41,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:45:41,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:45:41,623 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 18 treesize of output 14 [2021-11-07 01:45:42,001 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 01:45:42,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:45:42,336 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 40 treesize of output 34 [2021-11-07 01:45:42,646 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 01:45:42,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:45:42,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959840276] [2021-11-07 01:45:42,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959840276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:45:42,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:45:42,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-07 01:45:42,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607227524] [2021-11-07 01:45:42,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:45:42,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:45:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:45:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:45:42,650 INFO L87 Difference]: Start difference. First operand 168 states and 214 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 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 01:45:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:45:58,721 INFO L93 Difference]: Finished difference Result 347 states and 445 transitions. [2021-11-07 01:45:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:45:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 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 46 [2021-11-07 01:45:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:45:58,724 INFO L225 Difference]: With dead ends: 347 [2021-11-07 01:45:58,724 INFO L226 Difference]: Without dead ends: 206 [2021-11-07 01:45:58,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:45:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-07 01:45:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 164. [2021-11-07 01:45:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.3164556962025316) internal successors, (208), 163 states have internal predecessors, (208), 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 01:45:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 208 transitions. [2021-11-07 01:45:58,745 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 208 transitions. Word has length 46 [2021-11-07 01:45:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:45:58,746 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 208 transitions. [2021-11-07 01:45:58,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 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 01:45:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 208 transitions. [2021-11-07 01:45:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:45:58,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:45:58,750 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] [2021-11-07 01:45:58,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:45:58,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:58,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:45:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash -738588498, now seen corresponding path program 1 times [2021-11-07 01:45:58,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:58,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007276153] [2021-11-07 01:45:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:58,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:58,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:58,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:59,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:46:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:03,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:46:03,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:04,216 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:46:04,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:46:04,499 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 01:46:04,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:05,139 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 01:46:05,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:05,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007276153] [2021-11-07 01:46:05,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007276153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:05,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:05,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:46:05,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390901342] [2021-11-07 01:46:05,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:46:05,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:46:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:46:05,142 INFO L87 Difference]: Start difference. First operand 164 states and 208 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:46:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:20,072 INFO L93 Difference]: Finished difference Result 499 states and 628 transitions. [2021-11-07 01:46:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:46:20,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 54 [2021-11-07 01:46:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:20,080 INFO L225 Difference]: With dead ends: 499 [2021-11-07 01:46:20,080 INFO L226 Difference]: Without dead ends: 355 [2021-11-07 01:46:20,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:46:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-07 01:46:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 202. [2021-11-07 01:46:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.3061224489795917) internal successors, (256), 201 states have internal predecessors, (256), 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 01:46:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 256 transitions. [2021-11-07 01:46:20,121 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 256 transitions. Word has length 54 [2021-11-07 01:46:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:20,124 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 256 transitions. [2021-11-07 01:46:20,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 01:46:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 256 transitions. [2021-11-07 01:46:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:46:20,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:20,132 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] [2021-11-07 01:46:20,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:20,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:20,350 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:46:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -710253458, now seen corresponding path program 1 times [2021-11-07 01:46:20,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:20,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242114074] [2021-11-07 01:46:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:20,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:20,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:20,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:20,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:46:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:46:24,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:25,258 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:46:25,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 203 treesize of output 59 [2021-11-07 01:46:25,865 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 01:46:25,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:26,580 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 01:46:26,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:26,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242114074] [2021-11-07 01:46:26,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242114074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:26,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:26,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-07 01:46:26,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171767976] [2021-11-07 01:46:26,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:46:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:46:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:46:26,584 INFO L87 Difference]: Start difference. First operand 202 states and 256 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 01:46:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:44,361 INFO L93 Difference]: Finished difference Result 588 states and 705 transitions. [2021-11-07 01:46:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:46:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 54 [2021-11-07 01:46:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:44,370 INFO L225 Difference]: With dead ends: 588 [2021-11-07 01:46:44,370 INFO L226 Difference]: Without dead ends: 327 [2021-11-07 01:46:44,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:46:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-07 01:46:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 190. [2021-11-07 01:46:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.2282608695652173) internal successors, (226), 189 states have internal predecessors, (226), 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 01:46:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2021-11-07 01:46:44,389 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 54 [2021-11-07 01:46:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:44,389 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2021-11-07 01:46:44,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 01:46:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2021-11-07 01:46:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:46:44,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:44,400 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] [2021-11-07 01:46:44,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:44,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:44,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:46:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash -869117129, now seen corresponding path program 1 times [2021-11-07 01:46:44,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:44,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823369994] [2021-11-07 01:46:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:44,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:44,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:44,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98454b4f-4456-4357-a447-1dc5ee164bee/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:46:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:48,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:46:48,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:50,119 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 01:46:50,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:03,998 WARN L207 SmtUtils]: Spent 12.70 s on a formula simplification. DAG size of input: 526 DAG size of output: 272 [2021-11-07 01:47:04,004 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-07 01:47:04,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771