./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:17:19,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:17:19,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:17:20,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:17:20,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:17:20,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:17:20,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:17:20,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:17:20,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:17:20,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:17:20,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:17:20,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:17:20,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:17:20,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:17:20,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:17:20,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:17:20,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:17:20,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:17:20,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:17:20,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:17:20,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:17:20,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:17:20,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:17:20,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:17:20,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:17:20,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:17:20,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:17:20,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:17:20,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:17:20,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:17:20,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:17:20,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:17:20,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:17:20,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:17:20,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:17:20,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:17:20,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:17:20,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:17:20,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:17:20,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:17:20,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:17:20,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:17:20,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:17:20,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:17:20,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:17:20,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:17:20,130 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:17:20,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:17:20,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:17:20,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:17:20,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:17:20,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:17:20,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:17:20,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:17:20,132 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:17:20,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:17:20,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:17:20,133 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:17:20,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:17:20,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:17:20,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:17:20,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:17:20,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:17:20,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:17:20,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:17:20,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:17:20,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:17:20,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:17:20,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:17:20,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:17:20,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:20,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:17:20,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:17:20,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:17:20,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:17:20,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:17:20,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:17:20,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:17:20,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:17:20,139 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-12 22:17:20,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:17:20,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:17:20,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:17:20,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:17:20,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:17:20,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-12 22:17:20,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/7410f4826/d053399e55154fcd97ef467ee12b066e/FLAGc4f4fb7b7 [2021-11-12 22:17:21,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:17:21,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-12 22:17:21,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/7410f4826/d053399e55154fcd97ef467ee12b066e/FLAGc4f4fb7b7 [2021-11-12 22:17:21,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/7410f4826/d053399e55154fcd97ef467ee12b066e [2021-11-12 22:17:21,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:17:21,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:17:21,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:21,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:17:21,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:17:21,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:21" (1/1) ... [2021-11-12 22:17:21,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f8418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:21, skipping insertion in model container [2021-11-12 22:17:21,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:21" (1/1) ... [2021-11-12 22:17:21,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:17:22,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:22,337 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-12 22:17:22,344 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-12 22:17:22,369 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:22,375 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:23,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,433 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,479 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:23,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:23,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:23,912 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:23,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:23,916 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:23,917 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:23,918 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:23,919 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:23,920 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:23,921 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:24,183 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:24,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:24,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:24,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:24,420 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:17:24,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bc708b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:24, skipping insertion in model container [2021-11-12 22:17:24,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:24,422 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:17:24,424 INFO L158 Benchmark]: Toolchain (without parser) took 2524.82ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 75.6MB in the beginning and 73.9MB in the end (delta: 1.7MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2021-11-12 22:17:24,424 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:24,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2522.27ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 75.3MB in the beginning and 73.9MB in the end (delta: 1.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2021-11-12 22:17:24,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2522.27ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 75.3MB in the beginning and 73.9MB in the end (delta: 1.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:17:26,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:17:26,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:17:26,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:17:26,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:17:26,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:17:26,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:17:26,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:17:26,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:17:26,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:17:26,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:17:26,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:17:26,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:17:26,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:17:26,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:17:26,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:17:26,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:17:26,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:17:26,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:17:26,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:17:26,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:17:26,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:17:26,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:17:26,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:17:26,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:17:26,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:17:26,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:17:26,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:17:26,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:17:26,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:17:26,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:17:26,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:17:26,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:17:26,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:17:26,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:17:26,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:17:26,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:17:26,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:17:26,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:17:26,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:17:26,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:17:26,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:17:26,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:17:26,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:17:26,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:17:26,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:17:26,843 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:17:26,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:17:26,843 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:17:26,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:17:26,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:17:26,844 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:17:26,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:17:26,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:17:26,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:17:26,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:17:26,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:17:26,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:17:26,848 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:17:26,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:17:26,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:17:26,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:17:26,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:17:26,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:17:26,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:17:26,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:17:26,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:26,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:17:26,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:17:26,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:17:26,850 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:17:26,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:17:26,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:17:26,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:17:26,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:17:26,851 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-12 22:17:27,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:17:27,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:17:27,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:17:27,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:17:27,369 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:17:27,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-12 22:17:27,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/853eb4168/6b23066349c943a7b4b4766ffc941df4/FLAGa904f1fce [2021-11-12 22:17:28,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:17:28,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-12 22:17:28,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/853eb4168/6b23066349c943a7b4b4766ffc941df4/FLAGa904f1fce [2021-11-12 22:17:28,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/data/853eb4168/6b23066349c943a7b4b4766ffc941df4 [2021-11-12 22:17:28,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:17:28,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:17:28,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:28,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:17:28,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:17:28,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:28" (1/1) ... [2021-11-12 22:17:28,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73eeeb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:28, skipping insertion in model container [2021-11-12 22:17:28,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:28" (1/1) ... [2021-11-12 22:17:28,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:17:29,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:29,461 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-12 22:17:29,470 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-12 22:17:29,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:29,509 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:30,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,793 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,795 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:30,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:31,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:31,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:31,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:31,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:31,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:31,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:31,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:31,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:31,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:31,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:31,562 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:31,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:31,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:31,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:31,822 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:17:31,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:31,956 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-12 22:17:31,957 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-12 22:17:31,959 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:31,962 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:32,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:32,094 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:32,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:32,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:32,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:32,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:32,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:32,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:32,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:32,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:32,159 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:32,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:32,326 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:17:32,338 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-12 22:17:32,339 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_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-12 22:17:32,340 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:17:32,341 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:17:32,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,402 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:17:32,403 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:17:32,404 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:17:32,405 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:17:32,405 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:17:32,406 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:17:32,406 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:17:32,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:17:32,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:17:32,408 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:17:32,443 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:17:32,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:17:32,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:32,872 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:17:32,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32 WrapperNode [2021-11-12 22:17:32,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:32,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:32,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:17:32,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:17:32,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:33,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:17:33,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:17:33,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:17:33,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:17:33,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:17:33,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:17:33,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:17:33,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (1/1) ... [2021-11-12 22:17:33,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:17:33,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:17:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:17:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 22:17:33,445 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 22:17:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:17:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:17:33,446 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:17:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:17:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:17:33,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:17:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:17:33,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:17:33,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:17:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-12 22:17:33,449 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-12 22:17:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:17:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-12 22:17:33,449 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-12 22:17:33,449 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-12 22:17:33,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-11-12 22:17:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:17:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:17:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:17:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:17:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:17:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 22:17:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 22:17:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:17:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-11-12 22:17:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-11-12 22:17:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:17:33,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:17:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-12 22:17:33,485 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-12 22:17:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:17:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:17:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-12 22:17:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-12 22:17:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:17:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:17:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:17:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:17:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:17:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:17:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:17:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-11-12 22:17:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-11-12 22:17:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-11-12 22:17:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-11-12 22:17:49,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:17:49,819 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:17:49,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:49 BoogieIcfgContainer [2021-11-12 22:17:49,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:17:49,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:17:49,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:17:49,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:17:49,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:17:28" (1/3) ... [2021-11-12 22:17:49,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f149518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:49, skipping insertion in model container [2021-11-12 22:17:49,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:32" (2/3) ... [2021-11-12 22:17:49,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f149518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:49, skipping insertion in model container [2021-11-12 22:17:49,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:49" (3/3) ... [2021-11-12 22:17:49,830 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-12 22:17:49,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:17:49,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:17:49,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:17:49,890 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:17:49,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:17:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-12 22:17:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:17:49,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:49,929 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:49,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:17:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2021-11-12 22:17:49,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:49,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85583800] [2021-11-12 22:17:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:49,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:49,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:50,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:17:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:54,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:17:54,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-12 22:17:55,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-12 22:17:55,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:55,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85583800] [2021-11-12 22:17:55,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85583800] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:17:55,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:17:55,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:17:55,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346389528] [2021-11-12 22:17:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:55,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:17:55,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:17:55,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:17:55,622 INFO L87 Difference]: Start difference. First operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 22:17:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:55,707 INFO L93 Difference]: Finished difference Result 362 states and 521 transitions. [2021-11-12 22:17:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:17:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2021-11-12 22:17:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:55,725 INFO L225 Difference]: With dead ends: 362 [2021-11-12 22:17:55,725 INFO L226 Difference]: Without dead ends: 182 [2021-11-12 22:17:55,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:17:55,739 INFO L933 BasicCegarLoop]: 247 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, 247 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:55,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:17:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-12 22:17:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-12 22:17:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-12 22:17:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2021-11-12 22:17:55,821 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2021-11-12 22:17:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:55,823 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2021-11-12 22:17:55,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 22:17:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2021-11-12 22:17:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:17:55,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:55,841 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:55,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:56,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:56,042 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:17:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2021-11-12 22:17:56,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:56,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501450341] [2021-11-12 22:17:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:56,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:56,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:56,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:56,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:18:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:18:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:18:00,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:18:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-12 22:18:01,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:18:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 22:18:02,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:18:02,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501450341] [2021-11-12 22:18:02,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501450341] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:18:02,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:18:02,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:18:02,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123029211] [2021-11-12 22:18:02,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:18:02,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:18:02,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:18:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:18:02,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:18:02,060 INFO L87 Difference]: Start difference. First operand 182 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:18:04,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:06,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:18:06,991 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2021-11-12 22:18:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:18:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 176 [2021-11-12 22:18:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:18:06,996 INFO L225 Difference]: With dead ends: 352 [2021-11-12 22:18:06,996 INFO L226 Difference]: Without dead ends: 185 [2021-11-12 22:18:06,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:18:06,998 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 47 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4781.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.02ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4888.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:18:06,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 805 Invalid, 78 Unknown, 0 Unchecked, 9.02ms Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 4888.23ms Time] [2021-11-12 22:18:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-12 22:18:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-12 22:18:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2021-11-12 22:18:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2021-11-12 22:18:07,022 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2021-11-12 22:18:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:18:07,023 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2021-11-12 22:18:07,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:18:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2021-11-12 22:18:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 22:18:07,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:18:07,027 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:18:07,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:18:07,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:18:07,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:18:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:18:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2021-11-12 22:18:07,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:18:07,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996337559] [2021-11-12 22:18:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:18:07,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:18:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:18:07,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:18:07,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:18:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:18:11,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:18:11,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:18:12,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:18:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-12 22:18:13,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:18:15,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 22:18:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-12 22:18:15,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:18:15,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996337559] [2021-11-12 22:18:15,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996337559] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:18:15,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:18:15,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 18 [2021-11-12 22:18:15,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810067285] [2021-11-12 22:18:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:18:15,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:18:15,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:18:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:18:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:18:15,437 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 13 states, 12 states have (on average 5.916666666666667) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-12 22:18:17,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:19,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:22,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:24,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:26,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:18:26,779 INFO L93 Difference]: Finished difference Result 375 states and 503 transitions. [2021-11-12 22:18:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:18:26,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.916666666666667) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 182 [2021-11-12 22:18:26,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:18:26,784 INFO L225 Difference]: With dead ends: 375 [2021-11-12 22:18:26,785 INFO L226 Difference]: Without dead ends: 198 [2021-11-12 22:18:26,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:18:26,787 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 27 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11003.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 11202.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:18:26,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1746 Invalid, 177 Unknown, 0 Unchecked, 15.70ms Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 5 Unknown, 81 Unchecked, 11202.82ms Time] [2021-11-12 22:18:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-12 22:18:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-12 22:18:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 124 states have internal predecessors, (144), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (65), 57 states have call predecessors, (65), 57 states have call successors, (65) [2021-11-12 22:18:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 267 transitions. [2021-11-12 22:18:26,813 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 267 transitions. Word has length 182 [2021-11-12 22:18:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:18:26,814 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 267 transitions. [2021-11-12 22:18:26,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.916666666666667) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-12 22:18:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 267 transitions. [2021-11-12 22:18:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 22:18:26,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:18:26,819 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:18:26,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:18:27,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:18:27,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:18:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:18:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1802154969, now seen corresponding path program 1 times [2021-11-12 22:18:27,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:18:27,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124148602] [2021-11-12 22:18:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:18:27,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:18:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:18:27,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:18:27,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:18:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:18:31,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:18:31,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:18:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-12 22:18:32,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:18:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-11-12 22:18:32,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:18:32,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124148602] [2021-11-12 22:18:32,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124148602] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:18:32,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:18:32,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:18:32,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055238478] [2021-11-12 22:18:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:18:32,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:18:32,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:18:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:18:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:18:32,856 INFO L87 Difference]: Start difference. First operand 198 states and 267 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:18:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:18:32,957 INFO L93 Difference]: Finished difference Result 378 states and 518 transitions. [2021-11-12 22:18:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:18:32,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 182 [2021-11-12 22:18:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:18:32,962 INFO L225 Difference]: With dead ends: 378 [2021-11-12 22:18:32,962 INFO L226 Difference]: Without dead ends: 204 [2021-11-12 22:18:32,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:18:32,964 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 20 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:18:32,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 718 Invalid, 16 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 59.21ms Time] [2021-11-12 22:18:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-12 22:18:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-11-12 22:18:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 118 states have internal predecessors, (138), 58 states have call successors, (58), 17 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2021-11-12 22:18:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 260 transitions. [2021-11-12 22:18:32,987 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 260 transitions. Word has length 182 [2021-11-12 22:18:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:18:32,988 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 260 transitions. [2021-11-12 22:18:32,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:18:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 260 transitions. [2021-11-12 22:18:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 22:18:32,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:18:32,992 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:18:33,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:18:33,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:18:33,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:18:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:18:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1394037279, now seen corresponding path program 1 times [2021-11-12 22:18:33,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:18:33,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098906920] [2021-11-12 22:18:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:18:33,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:18:33,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:18:33,211 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:18:33,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:18:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:18:37,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:18:37,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:18:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-12 22:18:38,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:18:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-11-12 22:18:39,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:18:39,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098906920] [2021-11-12 22:18:39,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098906920] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:18:39,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:18:39,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 22:18:39,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960889875] [2021-11-12 22:18:39,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:18:39,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:18:39,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:18:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:18:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:18:39,789 INFO L87 Difference]: Start difference. First operand 192 states and 260 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:18:42,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:44,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:47,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:49,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:18:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:18:49,999 INFO L93 Difference]: Finished difference Result 384 states and 534 transitions. [2021-11-12 22:18:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:18:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 186 [2021-11-12 22:18:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:18:50,006 INFO L225 Difference]: With dead ends: 384 [2021-11-12 22:18:50,006 INFO L226 Difference]: Without dead ends: 212 [2021-11-12 22:18:50,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:18:50,009 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 42 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9692.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 10016.94ms IncrementalHoareTripleChecker+Time [2021-11-12 22:18:50,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 854 Invalid, 162 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 4 Unknown, 52 Unchecked, 10016.94ms Time] [2021-11-12 22:18:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-12 22:18:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 201. [2021-11-12 22:18:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.2) internal successors, (150), 127 states have internal predecessors, (150), 58 states have call successors, (58), 17 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2021-11-12 22:18:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 272 transitions. [2021-11-12 22:18:50,032 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 272 transitions. Word has length 186 [2021-11-12 22:18:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:18:50,033 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 272 transitions. [2021-11-12 22:18:50,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:18:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 272 transitions. [2021-11-12 22:18:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 22:18:50,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:18:50,037 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:18:50,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:18:50,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:18:50,253 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:18:50,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:18:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2100633885, now seen corresponding path program 1 times [2021-11-12 22:18:50,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:18:50,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702035555] [2021-11-12 22:18:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:18:50,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:18:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:18:50,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:18:50,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:18:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:18:54,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:18:54,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:18:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-12 22:18:57,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-12 22:19:00,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:00,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702035555] [2021-11-12 22:19:00,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702035555] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:19:00,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:19:00,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 22:19:00,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636253223] [2021-11-12 22:19:00,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:00,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:19:00,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:19:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:19:00,004 INFO L87 Difference]: Start difference. First operand 201 states and 272 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:19:02,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:04,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:09,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:11,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:13,147 INFO L93 Difference]: Finished difference Result 392 states and 550 transitions. [2021-11-12 22:19:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:19:13,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 186 [2021-11-12 22:19:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:13,153 INFO L225 Difference]: With dead ends: 392 [2021-11-12 22:19:13,153 INFO L226 Difference]: Without dead ends: 210 [2021-11-12 22:19:13,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:19:13,156 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 38 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10748.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 11227.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:13,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2225 Invalid, 700 Unknown, 0 Unchecked, 11.51ms Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 3 Unknown, 402 Unchecked, 11227.11ms Time] [2021-11-12 22:19:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-12 22:19:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2021-11-12 22:19:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 129 states have (on average 1.178294573643411) internal successors, (152), 132 states have internal predecessors, (152), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (72), 57 states have call predecessors, (72), 57 states have call successors, (72) [2021-11-12 22:19:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 282 transitions. [2021-11-12 22:19:13,182 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 282 transitions. Word has length 186 [2021-11-12 22:19:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:13,182 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 282 transitions. [2021-11-12 22:19:13,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:19:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 282 transitions. [2021-11-12 22:19:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 22:19:13,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:13,187 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:13,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:13,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:13,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash -718877153, now seen corresponding path program 1 times [2021-11-12 22:19:13,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:13,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272878721] [2021-11-12 22:19:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:13,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:13,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:13,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:13,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:19:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:17,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:19:17,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-12 22:19:18,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-11-12 22:19:18,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:18,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272878721] [2021-11-12 22:19:18,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272878721] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:19:18,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:19:18,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 22:19:18,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731308860] [2021-11-12 22:19:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:18,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:19:18,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:19:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:19:18,817 INFO L87 Difference]: Start difference. First operand 206 states and 282 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:19:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:18,922 INFO L93 Difference]: Finished difference Result 396 states and 548 transitions. [2021-11-12 22:19:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:19:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 186 [2021-11-12 22:19:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:18,929 INFO L225 Difference]: With dead ends: 396 [2021-11-12 22:19:18,929 INFO L226 Difference]: Without dead ends: 210 [2021-11-12 22:19:18,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:19:18,932 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 34 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:18,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 709 Invalid, 13 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 63.89ms Time] [2021-11-12 22:19:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-12 22:19:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 202. [2021-11-12 22:19:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.16) internal successors, (145), 128 states have internal predecessors, (145), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (72), 57 states have call predecessors, (72), 57 states have call successors, (72) [2021-11-12 22:19:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 275 transitions. [2021-11-12 22:19:18,968 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 275 transitions. Word has length 186 [2021-11-12 22:19:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:18,969 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 275 transitions. [2021-11-12 22:19:18,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:19:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 275 transitions. [2021-11-12 22:19:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-12 22:19:18,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:18,973 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:19,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:19,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:19,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1303648803, now seen corresponding path program 1 times [2021-11-12 22:19:19,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:19,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677457643] [2021-11-12 22:19:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:19,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:19,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:19,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:19,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:19:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:23,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:19:23,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-12 22:19:24,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-12 22:19:25,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:25,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677457643] [2021-11-12 22:19:25,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677457643] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:19:25,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:19:25,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 22:19:25,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264028150] [2021-11-12 22:19:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:25,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:19:25,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:19:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:19:25,111 INFO L87 Difference]: Start difference. First operand 202 states and 275 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:19:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:25,974 INFO L93 Difference]: Finished difference Result 395 states and 548 transitions. [2021-11-12 22:19:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:19:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 186 [2021-11-12 22:19:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:25,978 INFO L225 Difference]: With dead ends: 395 [2021-11-12 22:19:25,978 INFO L226 Difference]: Without dead ends: 211 [2021-11-12 22:19:25,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:19:25,981 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 12 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 655.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 715.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:25,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1749 Invalid, 182 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 715.16ms Time] [2021-11-12 22:19:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-12 22:19:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2021-11-12 22:19:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.16) internal successors, (145), 128 states have internal predecessors, (145), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (72), 57 states have call predecessors, (72), 57 states have call successors, (72) [2021-11-12 22:19:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 275 transitions. [2021-11-12 22:19:26,002 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 275 transitions. Word has length 186 [2021-11-12 22:19:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:26,003 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 275 transitions. [2021-11-12 22:19:26,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:19:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 275 transitions. [2021-11-12 22:19:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-12 22:19:26,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:26,006 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:26,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:26,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:26,233 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1220463656, now seen corresponding path program 1 times [2021-11-12 22:19:26,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:26,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765071714] [2021-11-12 22:19:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:26,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:26,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:26,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:26,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:19:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:30,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:19:30,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-12 22:19:31,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 22:19:32,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:32,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765071714] [2021-11-12 22:19:32,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765071714] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:19:32,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:19:32,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:19:32,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383140686] [2021-11-12 22:19:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:32,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:19:32,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:19:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:19:32,148 INFO L87 Difference]: Start difference. First operand 202 states and 275 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 22:19:34,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:34,467 INFO L93 Difference]: Finished difference Result 355 states and 486 transitions. [2021-11-12 22:19:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:19:34,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2021-11-12 22:19:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:34,477 INFO L225 Difference]: With dead ends: 355 [2021-11-12 22:19:34,477 INFO L226 Difference]: Without dead ends: 202 [2021-11-12 22:19:34,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:19:34,479 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 23 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2252.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2302.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:34,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 659 Invalid, 46 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2302.22ms Time] [2021-11-12 22:19:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-12 22:19:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-11-12 22:19:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.16) internal successors, (145), 128 states have internal predecessors, (145), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (71), 57 states have call predecessors, (71), 57 states have call successors, (71) [2021-11-12 22:19:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 274 transitions. [2021-11-12 22:19:34,495 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 274 transitions. Word has length 188 [2021-11-12 22:19:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:34,496 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 274 transitions. [2021-11-12 22:19:34,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 22:19:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 274 transitions. [2021-11-12 22:19:34,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-12 22:19:34,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:34,499 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:34,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-12 22:19:34,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:34,709 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash 804657987, now seen corresponding path program 1 times [2021-11-12 22:19:34,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:34,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120256526] [2021-11-12 22:19:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:34,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:34,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:34,714 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:34,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:19:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:19:39,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:19:39,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:19:39,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:19:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 22:19:41,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:19:42,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 22:19:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-12 22:19:43,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:19:43,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120256526] [2021-11-12 22:19:43,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120256526] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:19:43,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:19:43,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 18 [2021-11-12 22:19:43,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668663648] [2021-11-12 22:19:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:19:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:19:43,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:19:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:19:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:19:43,121 INFO L87 Difference]: Start difference. First operand 202 states and 274 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2021-11-12 22:19:45,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:47,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:49,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:51,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:53,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:55,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:19:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:19:56,340 INFO L93 Difference]: Finished difference Result 375 states and 508 transitions. [2021-11-12 22:19:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:19:56,341 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) Word has length 194 [2021-11-12 22:19:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:19:56,344 INFO L225 Difference]: With dead ends: 375 [2021-11-12 22:19:56,344 INFO L226 Difference]: Without dead ends: 215 [2021-11-12 22:19:56,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:19:56,345 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 41 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12853.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.30ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 13091.66ms IncrementalHoareTripleChecker+Time [2021-11-12 22:19:56,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1913 Invalid, 266 Unknown, 0 Unchecked, 7.30ms Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 5 Unknown, 145 Unchecked, 13091.66ms Time] [2021-11-12 22:19:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-12 22:19:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2021-11-12 22:19:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 132 states have internal predecessors, (152), 58 states have call successors, (58), 18 states have call predecessors, (58), 18 states have return successors, (71), 57 states have call predecessors, (71), 57 states have call successors, (71) [2021-11-12 22:19:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 281 transitions. [2021-11-12 22:19:56,363 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 281 transitions. Word has length 194 [2021-11-12 22:19:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:19:56,364 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 281 transitions. [2021-11-12 22:19:56,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2021-11-12 22:19:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 281 transitions. [2021-11-12 22:19:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-12 22:19:56,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:19:56,368 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:19:56,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:19:56,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:19:56,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:19:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:19:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1922144631, now seen corresponding path program 1 times [2021-11-12 22:19:56,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:19:56,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182537822] [2021-11-12 22:19:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:19:56,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:19:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:19:56,599 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:19:56,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:20:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:20:01,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:20:01,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:20:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-12 22:20:03,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:20:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-12 22:20:06,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:20:06,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182537822] [2021-11-12 22:20:06,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182537822] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:20:06,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:20:06,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 22:20:06,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653542279] [2021-11-12 22:20:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:20:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:20:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:20:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:20:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:20:06,414 INFO L87 Difference]: Start difference. First operand 207 states and 281 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 22:20:08,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:20:10,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:20:15,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:20:17,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:20:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:20:19,490 INFO L93 Difference]: Finished difference Result 369 states and 514 transitions. [2021-11-12 22:20:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:20:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 198 [2021-11-12 22:20:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:20:19,498 INFO L225 Difference]: With dead ends: 369 [2021-11-12 22:20:19,499 INFO L226 Difference]: Without dead ends: 214 [2021-11-12 22:20:19,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:20:19,501 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 36 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10617.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 11061.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:20:19,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2213 Invalid, 680 Unknown, 0 Unchecked, 8.82ms Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 4 Unknown, 392 Unchecked, 11061.21ms Time] [2021-11-12 22:20:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-12 22:20:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2021-11-12 22:20:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 133 states have internal predecessors, (149), 58 states have call successors, (58), 17 states have call predecessors, (58), 19 states have return successors, (78), 57 states have call predecessors, (78), 57 states have call successors, (78) [2021-11-12 22:20:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 285 transitions. [2021-11-12 22:20:19,522 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 285 transitions. Word has length 198 [2021-11-12 22:20:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:20:19,526 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 285 transitions. [2021-11-12 22:20:19,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 22:20:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 285 transitions. [2021-11-12 22:20:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-12 22:20:19,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:20:19,532 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:20:19,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:20:19,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:20:19,754 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:20:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:20:19,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2096271311, now seen corresponding path program 1 times [2021-11-12 22:20:19,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:20:19,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491771859] [2021-11-12 22:20:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:20:19,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:20:19,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:20:19,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:20:19,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:20:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:20:24,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:20:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:20:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-12 22:20:25,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:20:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-12 22:20:25,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:20:25,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491771859] [2021-11-12 22:20:25,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491771859] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:20:25,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:20:25,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 22:20:25,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393601679] [2021-11-12 22:20:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:20:25,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:20:25,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:20:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:20:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:20:25,950 INFO L87 Difference]: Start difference. First operand 207 states and 285 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 22:20:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:20:26,650 INFO L93 Difference]: Finished difference Result 369 states and 517 transitions. [2021-11-12 22:20:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:20:26,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 198 [2021-11-12 22:20:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:20:26,654 INFO L225 Difference]: With dead ends: 369 [2021-11-12 22:20:26,655 INFO L226 Difference]: Without dead ends: 211 [2021-11-12 22:20:26,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:20:26,657 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 12 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 511.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 579.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:20:26,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1749 Invalid, 182 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 579.13ms Time] [2021-11-12 22:20:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-12 22:20:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2021-11-12 22:20:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.16) internal successors, (145), 128 states have internal predecessors, (145), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (70), 57 states have call predecessors, (70), 57 states have call successors, (70) [2021-11-12 22:20:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 273 transitions. [2021-11-12 22:20:26,674 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 273 transitions. Word has length 198 [2021-11-12 22:20:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:20:26,675 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 273 transitions. [2021-11-12 22:20:26,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 22:20:26,676 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 273 transitions. [2021-11-12 22:20:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-12 22:20:26,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:20:26,678 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:20:26,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 22:20:26,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:20:26,901 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:20:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:20:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 497553140, now seen corresponding path program 2 times [2021-11-12 22:20:26,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:20:26,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739063054] [2021-11-12 22:20:26,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:20:26,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:20:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:20:26,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:20:26,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1fedef3-d9b1-45d5-91d9-c499b8eb5e24/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process