./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_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_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/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_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/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_6239f6e1-a84b-4d57-b249-ad8472367c9d/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 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:05,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:05,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:05,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:05,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:05,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:05,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:05,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:05,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:05,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:05,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:05,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:05,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:05,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:05,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:05,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:05,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:05,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:05,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:05,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:05,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:05,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:05,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:05,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:05,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:05,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:05,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:05,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:05,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:05,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:05,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:05,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:05,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:05,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:05,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:05,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:05,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:05,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:05,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:05,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:05,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:05,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:30:05,817 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:05,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:05,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:05,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:05,828 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:05,828 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:05,828 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:05,828 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:30:05,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:05,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:05,837 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:30:05,837 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:30:05,837 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:05,837 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:30:05,838 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:30:05,838 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:30:05,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:05,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:05,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:05,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:05,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:05,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:05,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:05,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:05,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:05,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:05,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:05,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:05,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:05,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:05,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:05,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:05,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:30:05,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:30:05,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:05,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:05,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:05,845 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2021-11-13 01:30:06,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:06,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:06,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:06,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:06,194 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:06,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-13 01:30:06,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/13a556226/57980dd5a08948818c521e04b1c827b5/FLAG324bb848a [2021-11-13 01:30:07,181 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:07,182 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-13 01:30:07,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/13a556226/57980dd5a08948818c521e04b1c827b5/FLAG324bb848a [2021-11-13 01:30:07,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/13a556226/57980dd5a08948818c521e04b1c827b5 [2021-11-13 01:30:07,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:07,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:07,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:07,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:07,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:07,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:07" (1/1) ... [2021-11-13 01:30:07,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb482b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:07, skipping insertion in model container [2021-11-13 01:30:07,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:07" (1/1) ... [2021-11-13 01:30:07,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:07,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:08,159 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-13 01:30:08,167 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-13 01:30:08,194 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:08,203 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:09,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:09,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:09,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:09,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:09,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:09,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:09,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:09,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:09,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:09,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:09,891 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:10,075 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:10,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:10,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:10,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:10,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:10,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:10,459 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 01:30:10,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c48e4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:10, skipping insertion in model container [2021-11-13 01:30:10,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:10,461 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:30:10,463 INFO L158 Benchmark]: Toolchain (without parser) took 2810.18ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 87.5MB in the beginning and 103.3MB in the end (delta: -15.8MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2021-11-13 01:30:10,464 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:30:10,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2806.36ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 87.2MB in the beginning and 103.3MB in the end (delta: -16.1MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2021-11-13 01:30:10,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2806.36ms. Allocated memory was 115.3MB in the beginning and 159.4MB in the end (delta: 44.0MB). Free memory was 87.2MB in the beginning and 103.3MB in the end (delta: -16.1MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/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_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/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_6239f6e1-a84b-4d57-b249-ad8472367c9d/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 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:12,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:12,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:12,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:12,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:12,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:12,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:12,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:12,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:12,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:12,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:12,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:12,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:12,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:12,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:12,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:12,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:12,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:12,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:12,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:12,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:12,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:12,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:12,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:12,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:12,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:12,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:12,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:12,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:12,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:12,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:12,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:12,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:12,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:12,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:12,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:12,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:12,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:12,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:12,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:12,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:12,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:30:12,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:12,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:12,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:12,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:12,968 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:12,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:12,969 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:12,969 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:12,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:12,969 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:12,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:12,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:12,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:12,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:12,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:12,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:12,974 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:30:12,974 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:30:12,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:12,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:12,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:12,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:12,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:30:12,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:12,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:12,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:12,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:12,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:12,978 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:30:12,978 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:12,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:12,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:12,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:12,979 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2021-11-13 01:30:13,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:13,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:13,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:13,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:13,473 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:13,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-13 01:30:13,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/d564e280e/733362d5f33c427ebb9f6ccbd24bfa64/FLAG9c590a36a [2021-11-13 01:30:14,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:14,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2021-11-13 01:30:14,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/d564e280e/733362d5f33c427ebb9f6ccbd24bfa64/FLAG9c590a36a [2021-11-13 01:30:14,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/data/d564e280e/733362d5f33c427ebb9f6ccbd24bfa64 [2021-11-13 01:30:14,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:14,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:14,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:14,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:14,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:14,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:14" (1/1) ... [2021-11-13 01:30:14,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3412b833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:14, skipping insertion in model container [2021-11-13 01:30:14,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:14" (1/1) ... [2021-11-13 01:30:14,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:15,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:15,377 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-13 01:30:15,384 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-13 01:30:15,409 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:15,414 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:16,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,525 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,576 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,577 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:16,580 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:17,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:17,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:17,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:17,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:17,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:17,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:17,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:17,075 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:17,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:17,314 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:17,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,425 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,425 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:17,628 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:30:17,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:17,699 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-13 01:30:17,699 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-13 01:30:17,701 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:17,702 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:17,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,755 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,755 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,756 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,828 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:17,829 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:17,830 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:17,831 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:17,834 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:17,835 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:17,836 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:17,836 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:17,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:17,837 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:17,881 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:17,897 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:17,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:18,158 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:30:18,183 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2021-11-13 01:30:18,184 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_6239f6e1-a84b-4d57-b249-ad8472367c9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2021-11-13 01:30:18,186 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:30:18,186 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:30:18,225 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,225 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,235 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,236 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,236 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,237 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:30:18,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:30:18,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:30:18,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:30:18,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:30:18,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:30:18,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:30:18,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:30:18,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:30:18,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:30:18,312 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:30:18,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:30:18,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:18,837 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:30:18,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18 WrapperNode [2021-11-13 01:30:18,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:18,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:18,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:30:18,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:30:18,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:18,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:19,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:30:19,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:30:19,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:30:19,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:30:19,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:30:19,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:30:19,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:30:19,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (1/1) ... [2021-11-13 01:30:19,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:30:19,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:30:19,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:30:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-13 01:30:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-13 01:30:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:30:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:30:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-13 01:30:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-13 01:30:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:30:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:30:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:30:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:30:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:30:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:30:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-11-13 01:30:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:30:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:30:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:30:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:30:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:30:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:30:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:30:19,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:30:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:30:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:30:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:30:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:30:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:30:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:30:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:30:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-13 01:30:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-13 01:30:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:30:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:30:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:30:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-13 01:30:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-13 01:30:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:30:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:30:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:30:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:30:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-13 01:30:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-13 01:30:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:30:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:30:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:30:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:30:19,443 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:30:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-11-13 01:30:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-11-13 01:30:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-13 01:30:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:30:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:30:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:30:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:30:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:30:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:30:36,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:30:36,808 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:30:36,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:36 BoogieIcfgContainer [2021-11-13 01:30:36,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:30:36,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:30:36,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:30:36,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:30:36,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:14" (1/3) ... [2021-11-13 01:30:36,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6027a1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:36, skipping insertion in model container [2021-11-13 01:30:36,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:18" (2/3) ... [2021-11-13 01:30:36,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6027a1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:36, skipping insertion in model container [2021-11-13 01:30:36,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:36" (3/3) ... [2021-11-13 01:30:36,821 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2021-11-13 01:30:36,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:30:36,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:30:36,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:30:36,913 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 01:30:36,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:30:36,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-13 01:30:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:30:36,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:36,958 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:30:36,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1892676938, now seen corresponding path program 1 times [2021-11-13 01:30:36,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:36,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291940307] [2021-11-13 01:30:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:36,993 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:37,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:37,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:30:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:41,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:30:41,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 01:30:41,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 01:30:42,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:42,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291940307] [2021-11-13 01:30:42,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291940307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:42,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:42,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:30:42,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927765961] [2021-11-13 01:30:42,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:42,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:30:42,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:30:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:30:42,183 INFO L87 Difference]: Start difference. First operand has 183 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 01:30:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:42,292 INFO L93 Difference]: Finished difference Result 357 states and 513 transitions. [2021-11-13 01:30:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:30:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2021-11-13 01:30:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:42,315 INFO L225 Difference]: With dead ends: 357 [2021-11-13 01:30:42,315 INFO L226 Difference]: Without dead ends: 178 [2021-11-13 01:30:42,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:30:42,330 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:42,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 6.80ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:30:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-13 01:30:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-13 01:30:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 117 states have internal predecessors, (146), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-13 01:30:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 241 transitions. [2021-11-13 01:30:42,422 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 241 transitions. Word has length 64 [2021-11-13 01:30:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:42,424 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 241 transitions. [2021-11-13 01:30:42,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 01:30:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 241 transitions. [2021-11-13 01:30:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:30:42,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:42,439 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 01:30:42,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:42,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:42,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1372550286, now seen corresponding path program 1 times [2021-11-13 01:30:42,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786224434] [2021-11-13 01:30:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:42,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:42,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:42,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:30:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:47,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:47,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:30:47,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:30:48,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:48,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786224434] [2021-11-13 01:30:48,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786224434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:48,108 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:48,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:30:48,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402385990] [2021-11-13 01:30:48,109 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:48,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:30:48,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:30:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:30:48,112 INFO L87 Difference]: Start difference. First operand 178 states and 241 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 01:30:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:48,576 INFO L93 Difference]: Finished difference Result 317 states and 437 transitions. [2021-11-13 01:30:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:30:48,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 64 [2021-11-13 01:30:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:48,583 INFO L225 Difference]: With dead ends: 317 [2021-11-13 01:30:48,583 INFO L226 Difference]: Without dead ends: 181 [2021-11-13 01:30:48,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 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 01:30:48,585 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 74 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 380.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:48,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 592 Invalid, 45 Unknown, 0 Unchecked, 7.70ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 424.72ms Time] [2021-11-13 01:30:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-13 01:30:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-13 01:30:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.2542372881355932) internal successors, (148), 120 states have internal predecessors, (148), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2021-11-13 01:30:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2021-11-13 01:30:48,611 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 64 [2021-11-13 01:30:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:48,611 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2021-11-13 01:30:48,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 01:30:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2021-11-13 01:30:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:30:48,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:48,614 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:48,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:48,839 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash -333611875, now seen corresponding path program 1 times [2021-11-13 01:30:48,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:48,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008723711] [2021-11-13 01:30:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:48,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:48,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:48,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:48,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:30:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:53,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:30:53,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:53,947 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 01:30:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:30:55,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:56,242 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 01:30:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:30:56,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:56,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008723711] [2021-11-13 01:30:56,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008723711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:56,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:56,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 18 [2021-11-13 01:30:56,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320731312] [2021-11-13 01:30:56,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:56,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 01:30:56,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 01:30:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:30:56,663 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 15 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-13 01:30:58,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:00,933 WARN L515 Checker$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 01:31:02,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:04,952 WARN L515 Checker$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 01:31:06,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:12,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:14,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:16,176 WARN L515 Checker$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 01:31:18,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:20,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:20,802 INFO L93 Difference]: Finished difference Result 345 states and 474 transitions. [2021-11-13 01:31:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:31:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 15 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2021-11-13 01:31:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:20,813 INFO L225 Difference]: With dead ends: 345 [2021-11-13 01:31:20,813 INFO L226 Difference]: Without dead ends: 199 [2021-11-13 01:31:20,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:31:20,816 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 41 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23435.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 23822.30ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:20,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2767 Invalid, 370 Unknown, 0 Unchecked, 23.25ms Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 10 Unknown, 81 Unchecked, 23822.30ms Time] [2021-11-13 01:31:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-13 01:31:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-11-13 01:31:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 136 states have internal predecessors, (166), 48 states have call successors, (48), 14 states have call predecessors, (48), 16 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-11-13 01:31:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 271 transitions. [2021-11-13 01:31:20,844 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 271 transitions. Word has length 70 [2021-11-13 01:31:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:20,845 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 271 transitions. [2021-11-13 01:31:20,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 15 states have internal predecessors, (60), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-13 01:31:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 271 transitions. [2021-11-13 01:31:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:31:20,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:20,848 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:20,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 01:31:21,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:21,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2115988255, now seen corresponding path program 1 times [2021-11-13 01:31:21,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:21,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134347065] [2021-11-13 01:31:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:21,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:21,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:21,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:21,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:31:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:26,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:26,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:31:26,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:31:26,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:26,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134347065] [2021-11-13 01:31:26,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134347065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:26,811 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:26,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:31:26,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817219385] [2021-11-13 01:31:26,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:26,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:26,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:26,813 INFO L87 Difference]: Start difference. First operand 198 states and 271 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, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:31:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:26,915 INFO L93 Difference]: Finished difference Result 351 states and 493 transitions. [2021-11-13 01:31:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:31:26,916 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, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2021-11-13 01:31:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:26,919 INFO L225 Difference]: With dead ends: 351 [2021-11-13 01:31:26,920 INFO L226 Difference]: Without dead ends: 204 [2021-11-13 01:31:26,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:26,922 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:26,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 715 Invalid, 16 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 61.99ms Time] [2021-11-13 01:31:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-13 01:31:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-11-13 01:31:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 128 states have (on average 1.25) internal successors, (160), 130 states have internal predecessors, (160), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:31:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 264 transitions. [2021-11-13 01:31:26,948 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 264 transitions. Word has length 70 [2021-11-13 01:31:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:26,949 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 264 transitions. [2021-11-13 01:31:26,949 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, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:31:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 264 transitions. [2021-11-13 01:31:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:31:26,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:26,952 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:27,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:27,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:27,167 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash 547181989, now seen corresponding path program 1 times [2021-11-13 01:31:27,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:27,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528951269] [2021-11-13 01:31:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:27,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:27,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:27,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:27,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:31:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:32,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:31:32,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:31:33,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:31:34,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:34,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528951269] [2021-11-13 01:31:34,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528951269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:34,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:34,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 01:31:34,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656369962] [2021-11-13 01:31:34,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:34,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:31:34,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:34,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:31:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:34,093 INFO L87 Difference]: Start difference. First operand 192 states and 264 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:31:36,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:40,309 WARN L515 Checker$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 01:31:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:40,510 INFO L93 Difference]: Finished difference Result 366 states and 521 transitions. [2021-11-13 01:31:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:40,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2021-11-13 01:31:40,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:40,516 INFO L225 Difference]: With dead ends: 366 [2021-11-13 01:31:40,517 INFO L226 Difference]: Without dead ends: 221 [2021-11-13 01:31:40,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:40,519 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 85 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5741.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.62ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 6001.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:40,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 913 Invalid, 144 Unknown, 0 Unchecked, 5.62ms Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 2 Unknown, 53 Unchecked, 6001.69ms Time] [2021-11-13 01:31:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-13 01:31:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2021-11-13 01:31:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 139 states have internal predecessors, (172), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:31:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 276 transitions. [2021-11-13 01:31:40,570 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 276 transitions. Word has length 74 [2021-11-13 01:31:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:40,573 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 276 transitions. [2021-11-13 01:31:40,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:31:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 276 transitions. [2021-11-13 01:31:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:31:40,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:40,579 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:40,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:40,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:40,792 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -824625309, now seen corresponding path program 1 times [2021-11-13 01:31:40,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:40,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026224166] [2021-11-13 01:31:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:40,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:40,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:40,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:40,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:31:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:46,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:31:46,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 01:31:48,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:31:51,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:51,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026224166] [2021-11-13 01:31:51,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026224166] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:51,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:51,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-13 01:31:51,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931307712] [2021-11-13 01:31:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:51,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:31:51,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:31:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:31:51,302 INFO L87 Difference]: Start difference. First operand 201 states and 276 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:31:53,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:55,608 WARN L515 Checker$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 01:32:01,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:03,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:04,674 INFO L93 Difference]: Finished difference Result 365 states and 519 transitions. [2021-11-13 01:32:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:32:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-11-13 01:32:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:04,681 INFO L225 Difference]: With dead ends: 365 [2021-11-13 01:32:04,681 INFO L226 Difference]: Without dead ends: 210 [2021-11-13 01:32:04,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:32:04,683 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 38 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11147.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 11539.62ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:04,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2247 Invalid, 602 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 4 Unknown, 348 Unchecked, 11539.62ms Time] [2021-11-13 01:32:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-13 01:32:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 202. [2021-11-13 01:32:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 140 states have internal predecessors, (171), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:32:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 275 transitions. [2021-11-13 01:32:04,720 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 275 transitions. Word has length 74 [2021-11-13 01:32:04,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:04,722 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 275 transitions. [2021-11-13 01:32:04,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:32:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 275 transitions. [2021-11-13 01:32:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:32:04,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:04,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:04,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:04,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:04,952 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1440668327, now seen corresponding path program 1 times [2021-11-13 01:32:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:04,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016586747] [2021-11-13 01:32:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:04,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:04,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:04,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:04,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:32:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:09,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:09,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:32:09,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:10,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:10,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016586747] [2021-11-13 01:32:10,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016586747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:10,134 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:10,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:32:10,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406165320] [2021-11-13 01:32:10,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:10,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:32:10,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:10,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:32:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:32:10,135 INFO L87 Difference]: Start difference. First operand 202 states and 275 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:32:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:10,250 INFO L93 Difference]: Finished difference Result 361 states and 506 transitions. [2021-11-13 01:32:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:32:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2021-11-13 01:32:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:10,254 INFO L225 Difference]: With dead ends: 361 [2021-11-13 01:32:10,254 INFO L226 Difference]: Without dead ends: 206 [2021-11-13 01:32:10,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:10,257 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 34 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:10,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 706 Invalid, 13 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 71.68ms Time] [2021-11-13 01:32:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-13 01:32:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2021-11-13 01:32:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.2238805970149254) internal successors, (164), 136 states have internal predecessors, (164), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:32:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2021-11-13 01:32:10,276 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 74 [2021-11-13 01:32:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:10,276 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2021-11-13 01:32:10,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:32:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2021-11-13 01:32:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:32:10,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:10,279 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:10,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:10,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:10,503 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash 543275049, now seen corresponding path program 1 times [2021-11-13 01:32:10,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:10,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8957231] [2021-11-13 01:32:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:10,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:10,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:10,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:10,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:32:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:15,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:32:15,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 01:32:15,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:32:16,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:16,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8957231] [2021-11-13 01:32:16,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8957231] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:16,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:16,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-13 01:32:16,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107139972] [2021-11-13 01:32:16,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:16,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:32:16,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:32:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:16,402 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:32:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:17,056 INFO L93 Difference]: Finished difference Result 360 states and 498 transitions. [2021-11-13 01:32:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:32:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-11-13 01:32:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:17,060 INFO L225 Difference]: With dead ends: 360 [2021-11-13 01:32:17,060 INFO L226 Difference]: Without dead ends: 207 [2021-11-13 01:32:17,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 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 01:32:17,062 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 12 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 514.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:17,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1781 Invalid, 142 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 514.21ms Time] [2021-11-13 01:32:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-13 01:32:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2021-11-13 01:32:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.2238805970149254) internal successors, (164), 136 states have internal predecessors, (164), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:32:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2021-11-13 01:32:17,079 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 74 [2021-11-13 01:32:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:17,080 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2021-11-13 01:32:17,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:32:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2021-11-13 01:32:17,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:32:17,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:17,082 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:17,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:17,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:17,288 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -873688690, now seen corresponding path program 1 times [2021-11-13 01:32:17,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:17,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758246833] [2021-11-13 01:32:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:17,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:17,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:17,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:32:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:22,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:32:22,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:22,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:22,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758246833] [2021-11-13 01:32:22,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758246833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:22,656 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:22,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:32:22,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198272318] [2021-11-13 01:32:22,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:22,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:22,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:22,658 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:32:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:23,164 INFO L93 Difference]: Finished difference Result 357 states and 490 transitions. [2021-11-13 01:32:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:32:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2021-11-13 01:32:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:23,175 INFO L225 Difference]: With dead ends: 357 [2021-11-13 01:32:23,175 INFO L226 Difference]: Without dead ends: 216 [2021-11-13 01:32:23,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:32:23,179 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 68 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 404.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:23,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 888 Invalid, 58 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 404.71ms Time] [2021-11-13 01:32:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-13 01:32:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2021-11-13 01:32:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 138 states have internal predecessors, (166), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:32:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2021-11-13 01:32:23,201 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 76 [2021-11-13 01:32:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:23,206 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2021-11-13 01:32:23,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 01:32:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2021-11-13 01:32:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:32:23,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:23,208 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:23,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:23,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:23,435 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1007702196, now seen corresponding path program 1 times [2021-11-13 01:32:23,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:23,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496987991] [2021-11-13 01:32:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:23,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:23,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:23,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:23,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:32:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:27,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:27,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:28,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:29,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:29,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496987991] [2021-11-13 01:32:29,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496987991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:29,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:29,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-13 01:32:29,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605144519] [2021-11-13 01:32:29,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:32:29,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:32:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:32:29,077 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:32:29,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:29,833 INFO L93 Difference]: Finished difference Result 208 states and 279 transitions. [2021-11-13 01:32:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:32:29,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2021-11-13 01:32:29,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:29,836 INFO L225 Difference]: With dead ends: 208 [2021-11-13 01:32:29,836 INFO L226 Difference]: Without dead ends: 206 [2021-11-13 01:32:29,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:32:29,837 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 73 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 567.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 648.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:29,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1179 Invalid, 108 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 648.21ms Time] [2021-11-13 01:32:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-13 01:32:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2021-11-13 01:32:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 141 states have internal predecessors, (169), 48 states have call successors, (48), 15 states have call predecessors, (48), 16 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2021-11-13 01:32:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 273 transitions. [2021-11-13 01:32:29,855 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 273 transitions. Word has length 76 [2021-11-13 01:32:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:29,855 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 273 transitions. [2021-11-13 01:32:29,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 01:32:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 273 transitions. [2021-11-13 01:32:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:32:29,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:29,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:29,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:30,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:30,075 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1610826330, now seen corresponding path program 1 times [2021-11-13 01:32:30,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:30,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147985900] [2021-11-13 01:32:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:30,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:30,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:30,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:32:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:34,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-13 01:32:34,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:40,276 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-13 01:32:40,277 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 120 case distinctions, treesize of input 580 treesize of output 196 [2021-11-13 01:32:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:32:40,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:32:43,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:43,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147985900] [2021-11-13 01:32:43,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147985900] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:43,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:43,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-13 01:32:43,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706400366] [2021-11-13 01:32:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:43,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:32:43,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:32:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:32:43,339 INFO L87 Difference]: Start difference. First operand 204 states and 273 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 01:32:45,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:47,623 WARN L515 Checker$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 01:32:56,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:58,555 WARN L515 Checker$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 01:32:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:59,620 INFO L93 Difference]: Finished difference Result 274 states and 382 transitions. [2021-11-13 01:32:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:32:59,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2021-11-13 01:32:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:59,630 INFO L225 Difference]: With dead ends: 274 [2021-11-13 01:32:59,630 INFO L226 Difference]: Without dead ends: 272 [2021-11-13 01:32:59,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:32:59,632 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 49 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13979.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14865.31ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:59,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1326 Invalid, 267 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [16 Valid, 247 Invalid, 4 Unknown, 0 Unchecked, 14865.31ms Time] [2021-11-13 01:32:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-13 01:32:59,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 230. [2021-11-13 01:32:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 158 states have (on average 1.2278481012658229) internal successors, (194), 161 states have internal predecessors, (194), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (64), 52 states have call predecessors, (64), 53 states have call successors, (64) [2021-11-13 01:32:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 312 transitions. [2021-11-13 01:32:59,657 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 312 transitions. Word has length 82 [2021-11-13 01:32:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:59,658 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 312 transitions. [2021-11-13 01:32:59,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 01:32:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 312 transitions. [2021-11-13 01:32:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:32:59,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:59,661 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:59,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:59,880 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash 279527167, now seen corresponding path program 1 times [2021-11-13 01:32:59,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:59,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25746474] [2021-11-13 01:32:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:59,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:59,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:59,886 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:59,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:33:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:05,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:05,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:05,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:33:05,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:05,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25746474] [2021-11-13 01:33:05,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25746474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:05,604 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:05,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:33:05,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970361002] [2021-11-13 01:33:05,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:05,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:05,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:05,605 INFO L87 Difference]: Start difference. First operand 230 states and 312 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:33:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:05,685 INFO L93 Difference]: Finished difference Result 326 states and 436 transitions. [2021-11-13 01:33:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:05,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 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 01:33:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:05,689 INFO L225 Difference]: With dead ends: 326 [2021-11-13 01:33:05,689 INFO L226 Difference]: Without dead ends: 247 [2021-11-13 01:33:05,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:05,691 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 11 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:05,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 725 Invalid, 10 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 42.83ms Time] [2021-11-13 01:33:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-13 01:33:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 232. [2021-11-13 01:33:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 160 states have (on average 1.21875) internal successors, (195), 163 states have internal predecessors, (195), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (64), 52 states have call predecessors, (64), 53 states have call successors, (64) [2021-11-13 01:33:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 313 transitions. [2021-11-13 01:33:05,714 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 313 transitions. Word has length 83 [2021-11-13 01:33:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:05,715 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 313 transitions. [2021-11-13 01:33:05,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:33:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 313 transitions. [2021-11-13 01:33:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 01:33:05,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:05,718 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:05,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:05,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:05,940 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2113575910, now seen corresponding path program 1 times [2021-11-13 01:33:05,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:05,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544364967] [2021-11-13 01:33:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:05,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:05,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:05,945 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:05,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:33:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:11,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:33:11,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:15,019 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-13 01:33:15,019 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 120 case distinctions, treesize of input 531 treesize of output 179 [2021-11-13 01:33:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-13 01:33:15,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:19,081 INFO L354 Elim1Store]: treesize reduction 1168, result has 0.1 percent of original size [2021-11-13 01:33:19,082 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 120 case distinctions, treesize of input 680 treesize of output 1 [2021-11-13 01:33:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-13 01:33:19,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:19,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544364967] [2021-11-13 01:33:19,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544364967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:19,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:19,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-13 01:33:19,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342885883] [2021-11-13 01:33:19,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:19,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:33:19,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:33:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=126, Unknown=1, NotChecked=0, Total=156 [2021-11-13 01:33:19,313 INFO L87 Difference]: Start difference. First operand 232 states and 313 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 8 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-13 01:33:21,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:23,633 WARN L515 Checker$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 01:33:34,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:36,974 WARN L515 Checker$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 01:33:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:37,914 INFO L93 Difference]: Finished difference Result 258 states and 350 transitions. [2021-11-13 01:33:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:33:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 8 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 88 [2021-11-13 01:33:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:37,919 INFO L225 Difference]: With dead ends: 258 [2021-11-13 01:33:37,919 INFO L226 Difference]: Without dead ends: 256 [2021-11-13 01:33:37,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=58, Invalid=213, Unknown=1, NotChecked=0, Total=272 [2021-11-13 01:33:37,921 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 99 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16699.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 17376.57ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:37,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1945 Invalid, 344 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [18 Valid, 319 Invalid, 4 Unknown, 3 Unchecked, 17376.57ms Time] [2021-11-13 01:33:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-13 01:33:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 238. [2021-11-13 01:33:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 164 states have (on average 1.2134146341463414) internal successors, (199), 167 states have internal predecessors, (199), 55 states have call successors, (55), 17 states have call predecessors, (55), 18 states have return successors, (65), 53 states have call predecessors, (65), 54 states have call successors, (65) [2021-11-13 01:33:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 319 transitions. [2021-11-13 01:33:37,943 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 319 transitions. Word has length 88 [2021-11-13 01:33:37,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:37,943 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 319 transitions. [2021-11-13 01:33:37,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 8 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-13 01:33:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 319 transitions. [2021-11-13 01:33:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 01:33:37,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:37,946 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:37,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:38,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:38,164 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1375966178, now seen corresponding path program 1 times [2021-11-13 01:33:38,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:38,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380304603] [2021-11-13 01:33:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:38,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:38,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:38,168 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:38,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6239f6e1-a84b-4d57-b249-ad8472367c9d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:33:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:42,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:33:42,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:44,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:33:44,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-13 01:33:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 01:33:44,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:45,412 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-13 01:33:45,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1 [2021-11-13 01:33:58,332 WARN L227 SmtUtils]: Spent 12.40s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:33:58,337 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-13 01:33:58,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771