./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:49,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:49,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:49,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:49,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:49,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:49,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:49,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:49,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:49,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:49,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:49,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:49,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:49,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:49,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:49,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:49,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:49,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:49,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:49,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:49,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:49,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:49,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:49,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:49,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:49,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:49,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:49,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:49,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:49,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:49,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:49,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:49,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:49,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:49,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:49,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:49,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:49,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:49,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:49,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:49,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:49,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:30:49,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:49,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:49,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:49,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:49,748 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:49,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:49,748 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:49,749 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:30:49,756 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:49,756 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:49,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:30:49,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:30:49,758 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:49,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:30:49,759 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:30:49,759 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:30:49,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:49,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:49,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:49,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:49,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:49,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:49,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:49,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:49,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:49,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:49,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:49,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:49,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:49,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:49,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:49,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:49,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:30:49,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:30:49,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:49,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:49,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:49,766 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2021-11-13 01:30:50,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:50,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:50,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:50,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:50,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:50,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-13 01:30:50,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/57fce4210/2c78f9062a58410dab4a80b5c3d00bd0/FLAG0d03695f5 [2021-11-13 01:30:51,287 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:51,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-13 01:30:51,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/57fce4210/2c78f9062a58410dab4a80b5c3d00bd0/FLAG0d03695f5 [2021-11-13 01:30:51,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/57fce4210/2c78f9062a58410dab4a80b5c3d00bd0 [2021-11-13 01:30:51,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:51,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:51,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:51,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:51,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:51,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304288eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:51, skipping insertion in model container [2021-11-13 01:30:51,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:51" (1/1) ... [2021-11-13 01:30:51,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:51,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:52,143 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-13 01:30:52,151 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-13 01:30:52,181 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:52,189 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:53,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:53,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:53,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:53,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:53,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:53,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:53,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:53,826 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:53,827 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:53,827 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:53,828 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:54,009 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:54,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:54,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:54,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:54,287 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) [2021-11-13 01:30:54,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d1c31fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:54, skipping insertion in model container [2021-11-13 01:30:54,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:54,290 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:30:54,293 INFO L158 Benchmark]: Toolchain (without parser) took 2572.07ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 98.4MB in the end (delta: -29.8MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-13 01:30:54,294 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory was 63.1MB in the beginning and 63.1MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:30:54,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2567.91ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 98.4MB in the end (delta: -29.8MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-13 01:30:54,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory was 63.1MB in the beginning and 63.1MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2567.91ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 68.5MB in the beginning and 98.4MB in the end (delta: -29.8MB). Peak memory consumption was 36.4MB. 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:56,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:56,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:56,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:56,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:56,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:56,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:56,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:56,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:56,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:56,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:56,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:56,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:56,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:56,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:56,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:56,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:56,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:56,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:56,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:56,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:56,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:56,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:56,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:56,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:56,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:56,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:56,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:56,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:56,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:56,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:56,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:56,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:56,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:56,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:56,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:56,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:56,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:56,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:56,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:56,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:56,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:30:56,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:56,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:56,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:56,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:56,877 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:56,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:56,878 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:56,878 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:56,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:56,878 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:56,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:56,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:56,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:56,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:56,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:56,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:56,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:30:56,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:30:56,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:56,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:56,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:56,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:56,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:30:56,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:56,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:56,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:56,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:56,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:56,887 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:30:56,887 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:56,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:56,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:56,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:56,888 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2021-11-13 01:30:57,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:57,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:57,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:57,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:57,295 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:57,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-13 01:30:57,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/63724ecb7/41360f6571344aeaabd37d4c0a4a1116/FLAG7961bd91f [2021-11-13 01:30:58,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:58,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2021-11-13 01:30:58,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/63724ecb7/41360f6571344aeaabd37d4c0a4a1116/FLAG7961bd91f [2021-11-13 01:30:58,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/data/63724ecb7/41360f6571344aeaabd37d4c0a4a1116 [2021-11-13 01:30:58,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:58,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:58,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:58,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:58,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:58,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:58" (1/1) ... [2021-11-13 01:30:58,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b977b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:58, skipping insertion in model container [2021-11-13 01:30:58,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:58" (1/1) ... [2021-11-13 01:30:58,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:59,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:59,341 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-13 01:30:59,347 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-13 01:30:59,373 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:59,381 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:00,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:00,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:00,871 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:00,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:00,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:00,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:00,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:00,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:00,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:00,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:00,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:01,052 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:01,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:01,341 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:31:01,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:31:01,441 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-13 01:31:01,441 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-13 01:31:01,443 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:31:01,443 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:01,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:01,519 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:01,520 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:01,521 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:01,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:01,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:01,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:01,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:01,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:01,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:01,565 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:01,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:01,710 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:31:01,722 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2021-11-13 01:31:01,723 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_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2021-11-13 01:31:01,724 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:31:01,725 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:31:01,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,760 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,761 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:01,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:31:01,891 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:31:01,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:31:01,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:31:01,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:31:01,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:31:01,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:31:01,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:31:01,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:31:01,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:31:01,933 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:31:02,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:02,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:31:02,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:31:02,372 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:31:02,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02 WrapperNode [2021-11-13 01:31:02,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:31:02,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:02,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:31:02,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:31:02,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:31:02,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:31:02,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:31:02,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:31:02,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:31:02,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:31:02,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:31:02,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:31:02,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (1/1) ... [2021-11-13 01:31:02,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:31:02,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:02,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:31:02,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:31:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:31:02,825 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:31:02,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:31:02,826 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:31:02,826 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:31:02,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:31:02,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:31:02,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:31:02,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-11-13 01:31:02,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:31:02,828 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:31:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:31:02,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:31:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:31:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:31:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:31:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:31:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:31:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:31:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:31:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:31:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:31:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:31:02,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:31:02,831 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-13 01:31:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-13 01:31:02,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:31:02,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:31:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:31:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:31:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:31:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:31:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:31:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-13 01:31:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-13 01:31:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:31:02,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:31:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:31:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:31:02,838 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:31:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-11-13 01:31:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-11-13 01:31:02,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-13 01:31:02,839 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:31:02,840 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:31:02,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:31:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:31:02,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:31:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:31:20,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:31:20,388 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:31:20,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:20 BoogieIcfgContainer [2021-11-13 01:31:20,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:31:20,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:31:20,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:31:20,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:31:20,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:58" (1/3) ... [2021-11-13 01:31:20,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c67721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:20, skipping insertion in model container [2021-11-13 01:31:20,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:02" (2/3) ... [2021-11-13 01:31:20,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c67721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:20, skipping insertion in model container [2021-11-13 01:31:20,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:20" (3/3) ... [2021-11-13 01:31:20,401 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness.i [2021-11-13 01:31:20,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:31:20,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:31:20,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:31:20,474 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 [2021-11-13 01:31:20,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:31:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 86 states have internal predecessors, (108), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-13 01:31:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 01:31:20,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:20,505 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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] [2021-11-13 01:31:20,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 259728785, now seen corresponding path program 1 times [2021-11-13 01:31:20,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:20,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762267608] [2021-11-13 01:31:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:20,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:20,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:20,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:20,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:31:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:24,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:24,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-13 01:31:25,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-13 01:31:25,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:25,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762267608] [2021-11-13 01:31:25,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762267608] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:25,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:25,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:31:25,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227277103] [2021-11-13 01:31:25,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:25,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:25,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:25,960 INFO L87 Difference]: Start difference. First operand has 129 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 86 states have internal predecessors, (108), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:31:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:26,377 INFO L93 Difference]: Finished difference Result 258 states and 370 transitions. [2021-11-13 01:31:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2021-11-13 01:31:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:26,399 INFO L225 Difference]: With dead ends: 258 [2021-11-13 01:31:26,399 INFO L226 Difference]: Without dead ends: 127 [2021-11-13 01:31:26,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:26,418 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 54 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:26,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 407 Invalid, 42 Unknown, 0 Unchecked, 10.46ms Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 337.67ms Time] [2021-11-13 01:31:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-13 01:31:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-13 01:31:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 85 states have internal predecessors, (104), 32 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-13 01:31:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 170 transitions. [2021-11-13 01:31:26,529 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 170 transitions. Word has length 77 [2021-11-13 01:31:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:26,530 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 170 transitions. [2021-11-13 01:31:26,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:31:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 170 transitions. [2021-11-13 01:31:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:31:26,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:26,543 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:31:26,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:26,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:26,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1492783356, now seen corresponding path program 1 times [2021-11-13 01:31:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:26,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000735959] [2021-11-13 01:31:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:26,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:26,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:26,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:31:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:31,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:31:31,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:32,251 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 [2021-11-13 01:31:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 01:31:33,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:34,861 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 [2021-11-13 01:31:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:31:35,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:35,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000735959] [2021-11-13 01:31:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000735959] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:35,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:35,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-13 01:31:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907373331] [2021-11-13 01:31:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:35,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:31:35,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:31:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:31:35,335 INFO L87 Difference]: Start difference. First operand 127 states and 170 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-13 01:31:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:35,734 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2021-11-13 01:31:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:31:35,739 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 83 [2021-11-13 01:31:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:35,743 INFO L225 Difference]: With dead ends: 250 [2021-11-13 01:31:35,743 INFO L226 Difference]: Without dead ends: 140 [2021-11-13 01:31:35,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:31:35,750 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 29 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 229.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:35,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 752 Invalid, 89 Unknown, 0 Unchecked, 26.79ms Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 62 Unchecked, 229.16ms Time] [2021-11-13 01:31:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-13 01:31:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-13 01:31:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 95 states have (on average 1.2526315789473683) internal successors, (119), 97 states have internal predecessors, (119), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (35), 31 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-13 01:31:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 186 transitions. [2021-11-13 01:31:35,793 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 186 transitions. Word has length 83 [2021-11-13 01:31:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:35,795 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 186 transitions. [2021-11-13 01:31:35,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-13 01:31:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 186 transitions. [2021-11-13 01:31:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:31:35,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:35,805 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:31:35,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:36,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:36,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1139694974, now seen corresponding path program 1 times [2021-11-13 01:31:36,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:36,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223844381] [2021-11-13 01:31:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:36,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:36,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:36,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:36,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:31:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:40,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:40,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:31:40,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-13 01:31:40,918 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:40,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223844381] [2021-11-13 01:31:40,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223844381] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:40,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:40,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:31:40,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255782148] [2021-11-13 01:31:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:40,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:40,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:40,920 INFO L87 Difference]: Start difference. First operand 140 states and 186 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:41,009 INFO L93 Difference]: Finished difference Result 253 states and 347 transitions. [2021-11-13 01:31:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:41,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2021-11-13 01:31:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:41,016 INFO L225 Difference]: With dead ends: 253 [2021-11-13 01:31:41,016 INFO L226 Difference]: Without dead ends: 146 [2021-11-13 01:31:41,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:41,020 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 20 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:41,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 53.78ms Time] [2021-11-13 01:31:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-13 01:31:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2021-11-13 01:31:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 91 states have internal predecessors, (113), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-13 01:31:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 179 transitions. [2021-11-13 01:31:41,051 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 179 transitions. Word has length 83 [2021-11-13 01:31:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:41,051 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 179 transitions. [2021-11-13 01:31:41,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 179 transitions. [2021-11-13 01:31:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:31:41,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:41,055 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:31:41,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:41,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:41,277 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash -667675260, now seen corresponding path program 1 times [2021-11-13 01:31:41,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:41,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620502867] [2021-11-13 01:31:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:41,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:41,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:41,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:41,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:31:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:45,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:45,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:31:46,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-13 01:31:46,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:46,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620502867] [2021-11-13 01:31:46,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620502867] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:46,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:46,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-13 01:31:46,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743421891] [2021-11-13 01:31:46,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:46,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:46,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:46,822 INFO L87 Difference]: Start difference. First operand 134 states and 179 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:49,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:51,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:54,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:56,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:56,647 INFO L93 Difference]: Finished difference Result 259 states and 359 transitions. [2021-11-13 01:31:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-11-13 01:31:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:56,652 INFO L225 Difference]: With dead ends: 259 [2021-11-13 01:31:56,652 INFO L226 Difference]: Without dead ends: 154 [2021-11-13 01:31:56,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:56,654 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 42 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9370.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 9622.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:56,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 563 Invalid, 131 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 4 Unknown, 43 Unchecked, 9622.78ms Time] [2021-11-13 01:31:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-13 01:31:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2021-11-13 01:31:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 100 states have internal predecessors, (125), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-13 01:31:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 191 transitions. [2021-11-13 01:31:56,669 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 191 transitions. Word has length 87 [2021-11-13 01:31:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:56,669 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 191 transitions. [2021-11-13 01:31:56,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:31:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 191 transitions. [2021-11-13 01:31:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:31:56,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:56,671 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:31:56,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:56,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:56,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1271486786, now seen corresponding path program 1 times [2021-11-13 01:31:56,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:56,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347864210] [2021-11-13 01:31:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:56,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:56,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:56,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:56,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:32:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:01,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:32:01,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 01:32:03,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 01:32:05,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:05,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347864210] [2021-11-13 01:32:05,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347864210] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:05,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-13 01:32:05,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158920320] [2021-11-13 01:32:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:05,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:32:05,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:32:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:32:05,859 INFO L87 Difference]: Start difference. First operand 143 states and 191 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:32:08,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:10,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:15,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:17,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:18,161 INFO L93 Difference]: Finished difference Result 267 states and 371 transitions. [2021-11-13 01:32:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:32:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-11-13 01:32:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:18,167 INFO L225 Difference]: With dead ends: 267 [2021-11-13 01:32:18,167 INFO L226 Difference]: Without dead ends: 152 [2021-11-13 01:32:18,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:32:18,169 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 38 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10230.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 10550.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:18,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1504 Invalid, 487 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 4 Unknown, 283 Unchecked, 10550.96ms Time] [2021-11-13 01:32:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-13 01:32:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-11-13 01:32:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.233009708737864) internal successors, (127), 105 states have internal predecessors, (127), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (38), 31 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-13 01:32:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 197 transitions. [2021-11-13 01:32:18,184 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 197 transitions. Word has length 87 [2021-11-13 01:32:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:18,185 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 197 transitions. [2021-11-13 01:32:18,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:32:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 197 transitions. [2021-11-13 01:32:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:32:18,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:18,187 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:32:18,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:18,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:18,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash -223774586, now seen corresponding path program 1 times [2021-11-13 01:32:18,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:18,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578505933] [2021-11-13 01:32:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:18,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:18,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:18,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:32:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:22,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:22,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:32:22,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-13 01:32:23,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:23,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578505933] [2021-11-13 01:32:23,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578505933] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:23,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:23,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:32:23,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268280753] [2021-11-13 01:32:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:23,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:32:23,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:23,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:32:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:32:23,138 INFO L87 Difference]: Start difference. First operand 148 states and 197 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:32:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:23,232 INFO L93 Difference]: Finished difference Result 271 states and 369 transitions. [2021-11-13 01:32:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:32:23,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-11-13 01:32:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:23,235 INFO L225 Difference]: With dead ends: 271 [2021-11-13 01:32:23,235 INFO L226 Difference]: Without dead ends: 152 [2021-11-13 01:32:23,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:23,238 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 34 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:23,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 478 Invalid, 13 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 64.12ms Time] [2021-11-13 01:32:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-13 01:32:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2021-11-13 01:32:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 101 states have internal predecessors, (120), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (38), 31 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-13 01:32:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 190 transitions. [2021-11-13 01:32:23,251 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 190 transitions. Word has length 87 [2021-11-13 01:32:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:23,252 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 190 transitions. [2021-11-13 01:32:23,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:32:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 190 transitions. [2021-11-13 01:32:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:32:23,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:23,255 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:32:23,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:23,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:23,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2042606600, now seen corresponding path program 1 times [2021-11-13 01:32:23,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:23,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637860575] [2021-11-13 01:32:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:23,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:23,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:23,475 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:32:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:27,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1883 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:32:27,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 01:32:28,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 01:32:28,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:28,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637860575] [2021-11-13 01:32:28,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637860575] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:28,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:28,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-13 01:32:28,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170336955] [2021-11-13 01:32:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:28,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:32:28,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:32:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:28,707 INFO L87 Difference]: Start difference. First operand 144 states and 190 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:32:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:29,166 INFO L93 Difference]: Finished difference Result 270 states and 365 transitions. [2021-11-13 01:32:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:32:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-11-13 01:32:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:29,170 INFO L225 Difference]: With dead ends: 270 [2021-11-13 01:32:29,170 INFO L226 Difference]: Without dead ends: 153 [2021-11-13 01:32:29,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:32:29,172 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 12 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:29,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1213 Invalid, 102 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 338.13ms Time] [2021-11-13 01:32:29,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-13 01:32:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 144. [2021-11-13 01:32:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 101 states have internal predecessors, (120), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (38), 31 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-13 01:32:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 190 transitions. [2021-11-13 01:32:29,187 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 190 transitions. Word has length 87 [2021-11-13 01:32:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:29,187 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 190 transitions. [2021-11-13 01:32:29,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:32:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 190 transitions. [2021-11-13 01:32:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 01:32:29,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:29,190 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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] [2021-11-13 01:32:29,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:29,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:29,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:29,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -509258065, now seen corresponding path program 1 times [2021-11-13 01:32:29,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:29,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864331538] [2021-11-13 01:32:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:29,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:29,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:29,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:29,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4092753e-cc1d-4f6a-9602-0ce0bc7771b9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:32:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:33,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1890 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:32:33,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:34,009 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 [2021-11-13 01:32:36,307 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 115 treesize of output 107 [2021-11-13 01:32:36,323 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:32:36,323 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 104 treesize of output 40 [2021-11-13 01:32:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 01:32:36,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:39,856 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-13 01:32:39,857 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 138 treesize of output 46 [2021-11-13 01:32:40,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:40,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:32:51,326 WARN L227 SmtUtils]: Spent 10.35s on a formula simplification. DAG size of input: 411 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:32:51,332 INFO L354 Elim1Store]: treesize reduction 515, result has 58.8 percent of original size [2021-11-13 01:32:51,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 92 case distinctions, treesize of input 127 treesize of output 770