./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF --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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:45,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:45,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:45,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:45,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:45,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:45,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:45,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:45,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:45,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:45,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:45,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:45,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:45,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:45,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:45,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:45,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:45,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:45,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:45,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:45,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:45,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:45,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:45,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:45,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:45,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:45,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:45,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:45,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:45,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:45,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:45,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:45,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:45,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:45,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:45,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:45,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:45,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:45,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:45,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:45,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:45,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:43:45,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:45,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:45,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:45,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:45,737 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:45,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:45,737 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:45,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:43:45,738 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:45,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:45,747 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:43:45,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:43:45,748 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:45,748 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:43:45,748 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:43:45,749 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:43:45,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:45,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:43:45,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:45,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:45,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:45,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:45,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:45,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:45,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:45,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:45,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:45,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:45,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:45,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:45,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:45,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:45,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:43:45,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:43:45,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:45,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:45,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:45,759 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_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-12 23:43:46,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:46,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:46,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:46,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:46,200 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:46,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-12 23:43:46,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/770726390/a105d2e68ed940739f3bf3be8c5dbbac/FLAG42a79b81b [2021-11-12 23:43:47,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:47,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-12 23:43:47,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/770726390/a105d2e68ed940739f3bf3be8c5dbbac/FLAG42a79b81b [2021-11-12 23:43:47,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/770726390/a105d2e68ed940739f3bf3be8c5dbbac [2021-11-12 23:43:47,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:47,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:47,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:47,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:47,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:47,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:47" (1/1) ... [2021-11-12 23:43:47,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6072ecd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:47, skipping insertion in model container [2021-11-12 23:43:47,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:47" (1/1) ... [2021-11-12 23:43:47,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:47,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:48,275 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-12 23:43:48,286 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-12 23:43:48,322 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:48,329 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:49,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,581 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,582 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:49,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:50,193 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:50,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:50,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:50,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:50,200 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:50,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:50,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:50,203 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:50,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:50,205 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:50,433 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:50,630 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:50,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:50,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:50,839 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) [2021-11-12 23:43:50,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c27dec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:50, skipping insertion in model container [2021-11-12 23:43:50,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:50,845 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:43:50,848 INFO L158 Benchmark]: Toolchain (without parser) took 3126.07ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 65.3MB in the beginning and 81.5MB in the end (delta: -16.3MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2021-11-12 23:43:50,850 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 60.8MB in the beginning and 60.8MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:43:50,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3122.78ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 65.3MB in the beginning and 81.5MB in the end (delta: -16.3MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2021-11-12 23:43:50,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 60.8MB in the beginning and 60.8MB in the end (delta: 29.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3122.78ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 65.3MB in the beginning and 81.5MB in the end (delta: -16.3MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: 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_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF --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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:53,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:53,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:53,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:53,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:53,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:53,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:53,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:53,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:53,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:53,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:53,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:53,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:53,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:53,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:53,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:53,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:53,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:53,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:53,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:53,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:53,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:53,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:53,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:53,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:53,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:53,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:53,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:53,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:53,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:53,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:53,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:53,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:53,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:53,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:53,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:53,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:53,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:53,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:53,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:53,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:53,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:43:53,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:53,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:53,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:53,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:53,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:53,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:53,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:53,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:53,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:53,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:53,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:53,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:53,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:53,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:53,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:53,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:53,631 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:43:53,632 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:43:53,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:53,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:53,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:53,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:53,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:43:53,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:53,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:53,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:53,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:53,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:53,635 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:43:53,635 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:43:53,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:53,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:53,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:53,636 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_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-12 23:43:54,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:54,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:54,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:54,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:54,124 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:54,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-12 23:43:54,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/1b8556f68/bc533b020db74daca3ba6166ec2ba42c/FLAGb3901e269 [2021-11-12 23:43:55,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:55,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-12 23:43:55,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/1b8556f68/bc533b020db74daca3ba6166ec2ba42c/FLAGb3901e269 [2021-11-12 23:43:55,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/data/1b8556f68/bc533b020db74daca3ba6166ec2ba42c [2021-11-12 23:43:55,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:55,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:55,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:55,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:55,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:55,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:55" (1/1) ... [2021-11-12 23:43:55,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f44bada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:55, skipping insertion in model container [2021-11-12 23:43:55,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:55" (1/1) ... [2021-11-12 23:43:55,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:55,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:56,308 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-12 23:43:56,316 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-12 23:43:56,347 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:56,356 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:58,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,030 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,049 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,050 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:58,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:58,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:58,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:58,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:58,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:58,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:58,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:58,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:58,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:58,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:58,881 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:59,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:59,175 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:43:59,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:59,292 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-12 23:43:59,293 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-12 23:43:59,294 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:59,295 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:59,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:59,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:59,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:59,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:59,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:59,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:59,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:59,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:59,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:59,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:59,516 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:43:59,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:59,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:43:59,771 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-12 23:43:59,772 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_600fe16a-7951-4122-a1e5-015af12c39c0/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-12 23:43:59,774 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:43:59,774 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:43:59,873 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,874 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,874 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:43:59,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:43:59,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:43:59,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:43:59,925 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:43:59,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:43:59,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:43:59,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:43:59,928 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:43:59,928 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:43:59,929 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:43:59,984 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:44:00,101 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:44:00,102 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:44:00,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:44:00,638 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:44:00,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00 WrapperNode [2021-11-12 23:44:00,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:44:00,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:44:00,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:44:00,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:44:00,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:00,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:00,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:44:00,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:44:00,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:44:00,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:44:00,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:00,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:00,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:00,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:01,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:01,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:01,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:01,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:44:01,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:44:01,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:44:01,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:44:01,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (1/1) ... [2021-11-12 23:44:01,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:44:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:44:01,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:44:01,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:44:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:44:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:44:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 23:44:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 23:44:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:44:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:44:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:44:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:44:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:44:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:44:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2021-11-12 23:44:01,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2021-11-12 23:44:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:44:01,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:44:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:44:01,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:44:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:44:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:44:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-12 23:44:01,236 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-12 23:44:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:44:01,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:44:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:44:01,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:44:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:44:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:44:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:44:01,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:44:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-12 23:44:01,238 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-12 23:44:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:44:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:44:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:44:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:44:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:44:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:44:01,240 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:44:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-12 23:44:01,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-12 23:44:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:44:01,244 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:44:18,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:44:18,231 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:44:18,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:18 BoogieIcfgContainer [2021-11-12 23:44:18,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:44:18,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:44:18,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:44:18,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:44:18,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:43:55" (1/3) ... [2021-11-12 23:44:18,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3617ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:18, skipping insertion in model container [2021-11-12 23:44:18,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:44:00" (2/3) ... [2021-11-12 23:44:18,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3617ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:44:18, skipping insertion in model container [2021-11-12 23:44:18,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:44:18" (3/3) ... [2021-11-12 23:44:18,244 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-12 23:44:18,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:44:18,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:44:18,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:44:18,315 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 [2021-11-12 23:44:18,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:44:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-12 23:44:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 23:44:18,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:18,354 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:18,354 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1985085193, now seen corresponding path program 1 times [2021-11-12 23:44:18,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:18,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122129486] [2021-11-12 23:44:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:18,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:18,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:18,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:44:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:23,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:44:23,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-12 23:44:23,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-12 23:44:24,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:24,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122129486] [2021-11-12 23:44:24,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122129486] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:24,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:24,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:44:24,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405232556] [2021-11-12 23:44:24,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:24,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:44:24,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:44:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:44:24,299 INFO L87 Difference]: Start difference. First operand has 169 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:44:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:24,386 INFO L93 Difference]: Finished difference Result 334 states and 478 transitions. [2021-11-12 23:44:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:44:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2021-11-12 23:44:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:24,415 INFO L225 Difference]: With dead ends: 334 [2021-11-12 23:44:24,415 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 23:44:24,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:44:24,431 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:24,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:44:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 23:44:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-12 23:44:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-12 23:44:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2021-11-12 23:44:24,523 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 97 [2021-11-12 23:44:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:24,524 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2021-11-12 23:44:24,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:44:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2021-11-12 23:44:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 23:44:24,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:24,540 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:24,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:24,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:24,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash 322966765, now seen corresponding path program 1 times [2021-11-12 23:44:24,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:24,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579017740] [2021-11-12 23:44:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:24,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:24,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:24,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:44:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:29,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:44:29,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-12 23:44:29,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-12 23:44:30,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:30,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579017740] [2021-11-12 23:44:30,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579017740] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:30,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:30,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:44:30,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583517801] [2021-11-12 23:44:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:30,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:44:30,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:44:30,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:44:30,534 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:44:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:30,950 INFO L93 Difference]: Finished difference Result 314 states and 419 transitions. [2021-11-12 23:44:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:44:30,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 97 [2021-11-12 23:44:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:30,960 INFO L225 Difference]: With dead ends: 314 [2021-11-12 23:44:30,960 INFO L226 Difference]: Without dead ends: 167 [2021-11-12 23:44:30,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:44:30,962 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 42 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:30,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 746 Invalid, 52 Unknown, 0 Unchecked, 9.03ms Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 367.50ms Time] [2021-11-12 23:44:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-12 23:44:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-12 23:44:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-12 23:44:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 222 transitions. [2021-11-12 23:44:30,987 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 222 transitions. Word has length 97 [2021-11-12 23:44:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:30,988 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 222 transitions. [2021-11-12 23:44:30,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:44:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 222 transitions. [2021-11-12 23:44:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-12 23:44:30,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:30,991 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:31,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:44:31,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:31,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash -95193896, now seen corresponding path program 1 times [2021-11-12 23:44:31,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:31,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830946065] [2021-11-12 23:44:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:31,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:31,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:31,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:31,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:44:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:35,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:44:35,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:36,165 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 [2021-11-12 23:44:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-12 23:44:37,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:38,920 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 [2021-11-12 23:44:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-12 23:44:39,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:39,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830946065] [2021-11-12 23:44:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830946065] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:39,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:39,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:44:39,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209143777] [2021-11-12 23:44:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:39,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:44:39,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:44:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:44:39,353 INFO L87 Difference]: Start difference. First operand 167 states and 222 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 23:44:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:39,776 INFO L93 Difference]: Finished difference Result 337 states and 446 transitions. [2021-11-12 23:44:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:44:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 103 [2021-11-12 23:44:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:39,784 INFO L225 Difference]: With dead ends: 337 [2021-11-12 23:44:39,784 INFO L226 Difference]: Without dead ends: 180 [2021-11-12 23:44:39,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:44:39,787 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 34 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.76ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 257.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:39,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1192 Invalid, 126 Unknown, 0 Unchecked, 10.76ms Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 95 Unchecked, 257.63ms Time] [2021-11-12 23:44:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-12 23:44:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-12 23:44:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 118 states have internal predecessors, (139), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2021-11-12 23:44:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 238 transitions. [2021-11-12 23:44:39,814 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 238 transitions. Word has length 103 [2021-11-12 23:44:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:39,815 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 238 transitions. [2021-11-12 23:44:39,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-12 23:44:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 238 transitions. [2021-11-12 23:44:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-12 23:44:39,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:39,818 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:39,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:40,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:40,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1062544550, now seen corresponding path program 1 times [2021-11-12 23:44:40,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:40,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084294406] [2021-11-12 23:44:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:40,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:40,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:40,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:40,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:44:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:45,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:44:45,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 23:44:45,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-12 23:44:45,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:45,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084294406] [2021-11-12 23:44:45,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084294406] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:45,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:45,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:44:45,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485171545] [2021-11-12 23:44:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:45,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:44:45,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:44:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:45,734 INFO L87 Difference]: Start difference. First operand 180 states and 238 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:44:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:45,827 INFO L93 Difference]: Finished difference Result 340 states and 457 transitions. [2021-11-12 23:44:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:44:45,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-11-12 23:44:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:45,831 INFO L225 Difference]: With dead ends: 340 [2021-11-12 23:44:45,831 INFO L226 Difference]: Without dead ends: 186 [2021-11-12 23:44:45,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:44:45,833 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 20 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:45,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 643 Invalid, 16 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 53.01ms Time] [2021-11-12 23:44:45,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-12 23:44:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 174. [2021-11-12 23:44:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 112 states have internal predecessors, (133), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-12 23:44:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2021-11-12 23:44:45,857 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 103 [2021-11-12 23:44:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:45,858 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2021-11-12 23:44:45,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:44:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2021-11-12 23:44:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:44:45,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:45,861 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:45,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:46,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:46,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:46,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash -238708128, now seen corresponding path program 1 times [2021-11-12 23:44:46,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:46,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875648244] [2021-11-12 23:44:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:46,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:46,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:46,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:44:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:50,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:44:50,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 23:44:52,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-12 23:44:52,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:52,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875648244] [2021-11-12 23:44:52,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875648244] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:52,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:52,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:44:52,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616370532] [2021-11-12 23:44:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:52,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:44:52,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:44:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:44:52,895 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:44:55,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:57,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:59,758 INFO L93 Difference]: Finished difference Result 346 states and 469 transitions. [2021-11-12 23:44:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:44:59,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2021-11-12 23:44:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:59,766 INFO L225 Difference]: With dead ends: 346 [2021-11-12 23:44:59,766 INFO L226 Difference]: Without dead ends: 194 [2021-11-12 23:44:59,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:44:59,768 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 42 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6394.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 6650.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:59,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 770 Invalid, 133 Unknown, 0 Unchecked, 13.17ms Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 2 Unknown, 43 Unchecked, 6650.51ms Time] [2021-11-12 23:44:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-12 23:44:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2021-11-12 23:44:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 121 states have internal predecessors, (145), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-12 23:44:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 243 transitions. [2021-11-12 23:44:59,790 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 243 transitions. Word has length 107 [2021-11-12 23:44:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:59,791 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 243 transitions. [2021-11-12 23:44:59,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:44:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 243 transitions. [2021-11-12 23:44:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:44:59,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:59,794 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:59,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:45:00,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:00,008 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash -161807330, now seen corresponding path program 1 times [2021-11-12 23:45:00,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:00,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336567266] [2021-11-12 23:45:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:00,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:00,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:00,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:45:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:04,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:45:04,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:45:07,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:45:10,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:10,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336567266] [2021-11-12 23:45:10,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336567266] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:10,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:10,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 23:45:10,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096931140] [2021-11-12 23:45:10,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:10,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:45:10,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:10,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:45:10,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:45:10,019 INFO L87 Difference]: Start difference. First operand 183 states and 243 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:45:12,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:14,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:18,481 INFO L93 Difference]: Finished difference Result 354 states and 481 transitions. [2021-11-12 23:45:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:45:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 107 [2021-11-12 23:45:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:18,488 INFO L225 Difference]: With dead ends: 354 [2021-11-12 23:45:18,488 INFO L226 Difference]: Without dead ends: 192 [2021-11-12 23:45:18,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:45:18,491 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 38 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6166.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.23ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 6501.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:18,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2004 Invalid, 561 Unknown, 0 Unchecked, 11.23ms Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 2 Unknown, 315 Unchecked, 6501.59ms Time] [2021-11-12 23:45:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-12 23:45:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2021-11-12 23:45:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 124 states have (on average 1.185483870967742) internal successors, (147), 126 states have internal predecessors, (147), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-12 23:45:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2021-11-12 23:45:18,536 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 107 [2021-11-12 23:45:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:18,538 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2021-11-12 23:45:18,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:45:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2021-11-12 23:45:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:45:18,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:18,543 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:18,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:45:18,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:18,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash -211642526, now seen corresponding path program 1 times [2021-11-12 23:45:18,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:18,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135993475] [2021-11-12 23:45:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:18,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:18,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:18,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:18,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:45:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:23,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:45:23,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 23:45:23,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-12 23:45:24,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:24,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135993475] [2021-11-12 23:45:24,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135993475] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:24,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:24,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:45:24,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740214562] [2021-11-12 23:45:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:24,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:45:24,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:45:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:45:24,151 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:45:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:24,229 INFO L93 Difference]: Finished difference Result 358 states and 479 transitions. [2021-11-12 23:45:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:45:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2021-11-12 23:45:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:24,233 INFO L225 Difference]: With dead ends: 358 [2021-11-12 23:45:24,233 INFO L226 Difference]: Without dead ends: 192 [2021-11-12 23:45:24,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:45:24,235 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 34 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:24,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 634 Invalid, 13 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 50.29ms Time] [2021-11-12 23:45:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-12 23:45:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2021-11-12 23:45:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 122 states have internal predecessors, (140), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-12 23:45:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2021-11-12 23:45:24,255 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 107 [2021-11-12 23:45:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:24,255 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2021-11-12 23:45:24,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:45:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2021-11-12 23:45:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:45:24,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:24,258 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:24,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:45:24,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:24,472 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1522461924, now seen corresponding path program 1 times [2021-11-12 23:45:24,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:24,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194135748] [2021-11-12 23:45:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:24,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:24,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:24,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:24,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:45:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:29,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:45:29,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:45:29,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:45:30,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:30,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194135748] [2021-11-12 23:45:30,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194135748] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:30,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:30,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 23:45:30,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979226939] [2021-11-12 23:45:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:30,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:45:30,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:45:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:45:30,418 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:45:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:30,997 INFO L93 Difference]: Finished difference Result 357 states and 475 transitions. [2021-11-12 23:45:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:45:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 107 [2021-11-12 23:45:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:31,007 INFO L225 Difference]: With dead ends: 357 [2021-11-12 23:45:31,007 INFO L226 Difference]: Without dead ends: 193 [2021-11-12 23:45:31,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:45:31,010 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 12 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 406.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.65ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 471.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:31,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1579 Invalid, 152 Unknown, 0 Unchecked, 5.65ms Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 471.64ms Time] [2021-11-12 23:45:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-12 23:45:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 184. [2021-11-12 23:45:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 122 states have internal predecessors, (140), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-12 23:45:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2021-11-12 23:45:31,029 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 107 [2021-11-12 23:45:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:31,030 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2021-11-12 23:45:31,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:45:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2021-11-12 23:45:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-12 23:45:31,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:31,033 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:31,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 23:45:31,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:31,248 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash 607735945, now seen corresponding path program 1 times [2021-11-12 23:45:31,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:31,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399759790] [2021-11-12 23:45:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:31,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:31,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:31,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:31,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:45:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:36,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:45:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:45:36,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-12 23:45:37,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:37,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399759790] [2021-11-12 23:45:37,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399759790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:37,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:37,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:45:37,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840748242] [2021-11-12 23:45:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:37,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:37,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:37,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:37,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:45:37,061 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:45:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:37,276 INFO L93 Difference]: Finished difference Result 331 states and 441 transitions. [2021-11-12 23:45:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:45:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2021-11-12 23:45:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:37,281 INFO L225 Difference]: With dead ends: 331 [2021-11-12 23:45:37,282 INFO L226 Difference]: Without dead ends: 187 [2021-11-12 23:45:37,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:45:37,284 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 28 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:37,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 582 Invalid, 34 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 198.93ms Time] [2021-11-12 23:45:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-12 23:45:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-12 23:45:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 125 states have internal predecessors, (142), 48 states have call successors, (48), 14 states have call predecessors, (48), 16 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-11-12 23:45:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 247 transitions. [2021-11-12 23:45:37,302 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 247 transitions. Word has length 109 [2021-11-12 23:45:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:37,303 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 247 transitions. [2021-11-12 23:45:37,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:45:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 247 transitions. [2021-11-12 23:45:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-12 23:45:37,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:37,306 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:37,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:37,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:37,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:37,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1220707282, now seen corresponding path program 1 times [2021-11-12 23:45:37,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:37,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979725317] [2021-11-12 23:45:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:37,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:37,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:37,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:45:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:42,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:45:42,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 23:45:43,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-12 23:45:43,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:43,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979725317] [2021-11-12 23:45:43,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979725317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:43,893 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:43,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 23:45:43,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643256317] [2021-11-12 23:45:43,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:43,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:45:43,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:45:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:43,896 INFO L87 Difference]: Start difference. First operand 187 states and 247 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-12 23:45:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:44,672 INFO L93 Difference]: Finished difference Result 329 states and 435 transitions. [2021-11-12 23:45:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:45:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 111 [2021-11-12 23:45:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:44,679 INFO L225 Difference]: With dead ends: 329 [2021-11-12 23:45:44,679 INFO L226 Difference]: Without dead ends: 184 [2021-11-12 23:45:44,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:45:44,681 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 66 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 622.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 720.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:44,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1092 Invalid, 116 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [34 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 720.69ms Time] [2021-11-12 23:45:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-12 23:45:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-12 23:45:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.1583333333333334) internal successors, (139), 122 states have internal predecessors, (139), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-12 23:45:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 241 transitions. [2021-11-12 23:45:44,697 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 241 transitions. Word has length 111 [2021-11-12 23:45:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:44,699 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 241 transitions. [2021-11-12 23:45:44,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-12 23:45:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 241 transitions. [2021-11-12 23:45:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-12 23:45:44,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:44,702 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:44,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:44,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:44,928 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash -39406311, now seen corresponding path program 1 times [2021-11-12 23:45:44,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:44,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966455758] [2021-11-12 23:45:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:44,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:44,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:44,936 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:44,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:45:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:50,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:45:50,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-12 23:45:50,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 23:45:51,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:51,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966455758] [2021-11-12 23:45:51,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966455758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:51,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:51,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 23:45:51,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810739934] [2021-11-12 23:45:51,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:51,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:45:51,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:51,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:45:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:51,094 INFO L87 Difference]: Start difference. First operand 184 states and 241 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:45:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:51,916 INFO L93 Difference]: Finished difference Result 320 states and 418 transitions. [2021-11-12 23:45:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:45:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2021-11-12 23:45:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:51,922 INFO L225 Difference]: With dead ends: 320 [2021-11-12 23:45:51,922 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 23:45:51,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:45:51,924 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 57 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 691.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 773.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:51,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1104 Invalid, 109 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [32 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 773.64ms Time] [2021-11-12 23:45:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 23:45:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-12 23:45:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.152542372881356) internal successors, (136), 119 states have internal predecessors, (136), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2021-11-12 23:45:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 235 transitions. [2021-11-12 23:45:51,941 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 235 transitions. Word has length 117 [2021-11-12 23:45:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:51,942 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 235 transitions. [2021-11-12 23:45:51,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-12 23:45:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 235 transitions. [2021-11-12 23:45:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 23:45:51,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:51,945 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:52,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:45:52,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:52,168 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1429562114, now seen corresponding path program 1 times [2021-11-12 23:45:52,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:52,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339676871] [2021-11-12 23:45:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:52,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:52,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:52,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:52,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600fe16a-7951-4122-a1e5-015af12c39c0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:45:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:57,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:45:57,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:00,918 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:46:00,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-12 23:46:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 23:46:01,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:02,641 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-12 23:46:02,641 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 129 treesize of output 1 [2021-11-12 23:46:13,883 WARN L227 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:46:13,888 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-12 23:46:13,888 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 128 treesize of output 771