./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs --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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:05:00,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:05:00,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:05:00,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:05:00,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:05:00,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:05:00,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:05:00,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:05:00,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:05:00,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:05:00,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:05:00,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:05:00,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:05:00,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:05:00,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:05:00,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:05:00,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:05:00,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:05:00,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:05:00,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:05:00,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:05:00,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:05:00,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:05:00,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:05:00,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:05:00,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:05:00,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:05:00,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:05:00,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:05:00,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:05:00,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:05:00,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:05:00,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:05:00,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:05:00,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:05:00,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:05:00,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:05:00,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:05:00,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:05:00,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:05:00,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:05:00,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:05:00,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:05:00,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:05:00,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:05:00,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:05:00,412 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:05:00,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:05:00,413 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:05:00,413 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:05:00,414 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:05:00,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:05:00,415 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:05:00,415 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:05:00,416 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:05:00,416 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:05:00,416 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:05:00,416 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:05:00,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:05:00,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:05:00,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:05:00,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:05:00,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:05:00,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:05:00,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:05:00,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:05:00,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:05:00,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:05:00,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:05:00,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:05:00,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:05:00,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:05:00,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:05:00,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:05:00,423 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:05:00,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:05:00,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:05:00,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:05:00,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:05:00,425 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2021-11-19 15:05:00,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:05:00,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:05:00,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:05:00,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:05:00,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:05:00,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-19 15:05:00,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/4d8854304/43e7b7245cfc4468b6d80d7535919b09/FLAG934ede2e4 [2021-11-19 15:05:01,871 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:05:01,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-19 15:05:01,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/4d8854304/43e7b7245cfc4468b6d80d7535919b09/FLAG934ede2e4 [2021-11-19 15:05:02,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/4d8854304/43e7b7245cfc4468b6d80d7535919b09 [2021-11-19 15:05:02,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:05:02,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:05:02,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:05:02,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:05:02,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:05:02,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:05:02" (1/1) ... [2021-11-19 15:05:02,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70edf526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:02, skipping insertion in model container [2021-11-19 15:05:02,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:05:02" (1/1) ... [2021-11-19 15:05:02,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:05:02,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:05:02,802 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-19 15:05:02,811 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-19 15:05:02,849 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:05:02,857 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:05:04,244 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,246 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,248 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,265 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,266 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,269 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,270 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:04,886 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:05:04,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:05:04,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:05:04,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:05:04,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:05:04,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:05:04,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:05:04,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:05:04,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:05:04,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:05:05,265 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:05:05,442 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,443 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,822 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,823 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,846 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,847 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,853 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,854 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,869 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,870 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,871 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,871 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,872 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,872 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,873 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:05,910 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:05:05,961 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) [2021-11-19 15:05:05,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35356a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:05, skipping insertion in model container [2021-11-19 15:05:05,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:05:05,962 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:05:05,964 INFO L158 Benchmark]: Toolchain (without parser) took 3702.12ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 64.5MB in the beginning and 61.3MB in the end (delta: 3.2MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-11-19 15:05:05,965 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:05:05,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3694.82ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 64.3MB in the beginning and 61.3MB in the end (delta: 3.0MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-11-19 15:05:05,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3694.82ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 64.3MB in the beginning and 61.3MB in the end (delta: 3.0MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7002]: 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs --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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:05:08,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:05:08,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:05:08,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:05:08,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:05:08,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:05:08,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:05:08,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:05:08,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:05:08,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:05:08,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:05:08,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:05:08,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:05:08,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:05:08,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:05:08,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:05:08,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:05:08,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:05:08,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:05:08,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:05:08,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:05:08,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:05:08,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:05:08,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:05:08,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:05:08,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:05:08,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:05:08,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:05:08,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:05:08,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:05:08,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:05:08,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:05:08,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:05:08,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:05:08,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:05:08,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:05:08,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:05:08,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:05:08,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:05:08,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:05:08,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:05:08,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:05:08,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:05:08,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:05:08,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:05:08,693 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:05:08,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:05:08,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:05:08,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:05:08,694 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:05:08,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:05:08,694 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:05:08,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:05:08,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:05:08,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:05:08,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:05:08,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:05:08,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:05:08,699 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:05:08,699 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:05:08,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:05:08,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:05:08,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:05:08,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:05:08,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:05:08,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:05:08,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:05:08,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:05:08,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:05:08,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:05:08,702 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:05:08,702 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:05:08,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:05:08,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:05:08,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:05:08,703 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2021-11-19 15:05:09,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:05:09,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:05:09,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:05:09,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:05:09,167 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:05:09,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-19 15:05:09,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/361cb2503/f88e4722f647457c8190fd66e9e4f90d/FLAG3dc8f1f56 [2021-11-19 15:05:10,507 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:05:10,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-19 15:05:10,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/361cb2503/f88e4722f647457c8190fd66e9e4f90d/FLAG3dc8f1f56 [2021-11-19 15:05:10,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/data/361cb2503/f88e4722f647457c8190fd66e9e4f90d [2021-11-19 15:05:10,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:05:10,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:05:10,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:05:10,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:05:10,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:05:10,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:05:10" (1/1) ... [2021-11-19 15:05:10,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2cb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:10, skipping insertion in model container [2021-11-19 15:05:10,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:05:10" (1/1) ... [2021-11-19 15:05:10,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:05:11,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:05:11,470 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-19 15:05:11,480 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-19 15:05:11,520 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:05:11,530 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:05:13,111 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,112 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,113 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,113 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,114 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,131 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,131 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,134 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,134 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:13,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:05:13,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:05:13,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:05:13,785 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:05:13,787 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:05:13,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:05:13,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:05:13,790 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:05:13,791 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:05:13,792 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:05:14,044 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:05:14,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,591 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,592 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,619 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,620 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,628 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,628 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,644 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,646 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,646 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,647 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,647 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,648 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,649 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,687 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:05:14,749 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:05:14,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:05:14,849 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-19 15:05:14,851 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-19 15:05:14,875 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:05:14,875 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:05:14,929 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,934 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,935 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,935 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,937 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,949 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,950 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:14,953 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:05:15,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:05:15,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:05:15,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:05:15,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:05:15,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:05:15,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:05:15,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:05:15,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:05:15,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:05:15,067 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:05:15,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,173 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,327 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,328 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,337 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,338 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,340 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,341 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,370 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,371 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,372 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,373 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,373 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,375 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,375 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,406 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:05:15,472 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:05:15,502 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-19 15:05:15,503 WARN L230 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_93ab798e-2fc8-4636-b92a-b0db7d4b1930/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-19 15:05:15,505 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:05:15,506 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:05:15,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,552 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,553 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,560 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,561 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,562 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,563 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:05:15,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:05:15,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:05:15,648 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:05:15,649 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:05:15,649 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:05:15,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:05:15,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:05:15,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:05:15,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:05:15,680 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:05:15,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,735 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,887 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,888 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,897 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,897 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,900 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,901 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,912 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,913 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,914 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,914 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,914 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,915 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,915 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:15,951 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:05:16,312 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:05:16,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16 WrapperNode [2021-11-19 15:05:16,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:05:16,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:05:16,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:05:16,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:05:16,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,615 INFO L137 Inliner]: procedures = 798, calls = 3578, calls flagged for inlining = 79, calls inlined = 6, statements flattened = 784 [2021-11-19 15:05:16,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:05:16,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:05:16,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:05:16,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:05:16,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:05:16,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:05:16,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:05:16,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:05:16,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (1/1) ... [2021-11-19 15:05:16,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:05:16,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:05:16,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:05:16,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:05:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:05:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:05:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:05:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:05:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:05:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:05:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:05:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:05:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:05:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:05:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:05:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:05:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:05:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2021-11-19 15:05:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2021-11-19 15:05:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 15:05:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 15:05:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:05:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:05:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:05:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:05:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:05:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:05:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 15:05:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:05:16,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:05:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:05:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:05:17,327 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:05:17,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:05:26,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-11-19 15:05:26,341 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:05:26,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:05:26,355 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 15:05:26,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:05:26 BoogieIcfgContainer [2021-11-19 15:05:26,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:05:26,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:05:26,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:05:26,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:05:26,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:05:10" (1/3) ... [2021-11-19 15:05:26,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a76deb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:05:26, skipping insertion in model container [2021-11-19 15:05:26,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:16" (2/3) ... [2021-11-19 15:05:26,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a76deb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:05:26, skipping insertion in model container [2021-11-19 15:05:26,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:05:26" (3/3) ... [2021-11-19 15:05:26,368 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2021-11-19 15:05:26,390 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:05:26,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:05:26,463 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:05:26,470 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 [2021-11-19 15:05:26,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:05:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-19 15:05:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 15:05:26,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:26,516 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:26,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1196197405, now seen corresponding path program 1 times [2021-11-19 15:05:26,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:26,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277907927] [2021-11-19 15:05:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:26,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:26,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:26,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:26,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:05:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:27,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:05:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:05:27,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 15:05:27,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:27,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277907927] [2021-11-19 15:05:27,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277907927] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:27,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:27,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 15:05:27,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836731514] [2021-11-19 15:05:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:28,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:05:28,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:05:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:05:28,051 INFO L87 Difference]: Start difference. First operand has 134 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 15:05:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:28,093 INFO L93 Difference]: Finished difference Result 263 states and 398 transitions. [2021-11-19 15:05:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:05:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2021-11-19 15:05:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:28,107 INFO L225 Difference]: With dead ends: 263 [2021-11-19 15:05:28,107 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 15:05:28,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:05:28,116 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:28,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:05:28,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 15:05:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 15:05:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 109 states have internal predecessors, (161), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-19 15:05:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 186 transitions. [2021-11-19 15:05:28,173 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 186 transitions. Word has length 62 [2021-11-19 15:05:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:28,173 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 186 transitions. [2021-11-19 15:05:28,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 15:05:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 186 transitions. [2021-11-19 15:05:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 15:05:28,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:28,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:28,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:28,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:28,389 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash -902599839, now seen corresponding path program 1 times [2021-11-19 15:05:28,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:28,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983648497] [2021-11-19 15:05:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:28,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:28,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:28,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:28,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:05:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:29,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:05:29,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:05:29,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 15:05:30,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:30,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983648497] [2021-11-19 15:05:30,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983648497] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:30,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:30,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:05:30,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901881505] [2021-11-19 15:05:30,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:30,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:05:30,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:05:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:05:30,074 INFO L87 Difference]: Start difference. First operand 128 states and 186 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 15:05:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:30,218 INFO L93 Difference]: Finished difference Result 239 states and 354 transitions. [2021-11-19 15:05:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:05:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2021-11-19 15:05:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:30,229 INFO L225 Difference]: With dead ends: 239 [2021-11-19 15:05:30,229 INFO L226 Difference]: Without dead ends: 131 [2021-11-19 15:05:30,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:05:30,234 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 22 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:30,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 513 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:05:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-19 15:05:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-19 15:05:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 110 states have (on average 1.481818181818182) internal successors, (163), 112 states have internal predecessors, (163), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-19 15:05:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 190 transitions. [2021-11-19 15:05:30,267 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 190 transitions. Word has length 62 [2021-11-19 15:05:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:30,268 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 190 transitions. [2021-11-19 15:05:30,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 15:05:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 190 transitions. [2021-11-19 15:05:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 15:05:30,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:30,284 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:05:30,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:30,509 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:30,510 INFO L85 PathProgramCache]: Analyzing trace with hash 90546502, now seen corresponding path program 1 times [2021-11-19 15:05:30,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:30,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132310956] [2021-11-19 15:05:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:30,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:30,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:30,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:30,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:05:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:31,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:05:31,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 15:05:31,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 15:05:32,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:32,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132310956] [2021-11-19 15:05:32,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132310956] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:32,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:32,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 15:05:32,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630117187] [2021-11-19 15:05:32,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:32,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:05:32,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:05:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:05:32,078 INFO L87 Difference]: Start difference. First operand 131 states and 190 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 15:05:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:32,248 INFO L93 Difference]: Finished difference Result 239 states and 350 transitions. [2021-11-19 15:05:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:05:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2021-11-19 15:05:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:32,251 INFO L225 Difference]: With dead ends: 239 [2021-11-19 15:05:32,251 INFO L226 Difference]: Without dead ends: 131 [2021-11-19 15:05:32,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:05:32,253 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 26 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:32,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 685 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:05:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-19 15:05:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-19 15:05:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 110 states have (on average 1.481818181818182) internal successors, (163), 112 states have internal predecessors, (163), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2021-11-19 15:05:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2021-11-19 15:05:32,267 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 189 transitions. Word has length 64 [2021-11-19 15:05:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:32,268 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-11-19 15:05:32,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 15:05:32,268 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 189 transitions. [2021-11-19 15:05:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 15:05:32,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:32,270 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-19 15:05:32,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:32,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:32,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:32,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -249804501, now seen corresponding path program 2 times [2021-11-19 15:05:32,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:32,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518123796] [2021-11-19 15:05:32,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:05:32,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:32,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:32,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:32,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:05:55,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:05:55,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:05:55,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:05:55,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:05:55,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:05:56,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:56,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518123796] [2021-11-19 15:05:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518123796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:56,164 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:56,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 15:05:56,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317813871] [2021-11-19 15:05:56,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:05:56,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:05:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:05:56,166 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 15:05:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:56,373 INFO L93 Difference]: Finished difference Result 158 states and 220 transitions. [2021-11-19 15:05:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:05:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2021-11-19 15:05:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:56,376 INFO L225 Difference]: With dead ends: 158 [2021-11-19 15:05:56,376 INFO L226 Difference]: Without dead ends: 128 [2021-11-19 15:05:56,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:05:56,378 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 28 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:56,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1026 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:05:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-19 15:05:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-19 15:05:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.4814814814814814) internal successors, (160), 109 states have internal predecessors, (160), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-19 15:05:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 185 transitions. [2021-11-19 15:05:56,401 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 185 transitions. Word has length 66 [2021-11-19 15:05:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:56,405 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 185 transitions. [2021-11-19 15:05:56,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 15:05:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 185 transitions. [2021-11-19 15:05:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 15:05:56,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:56,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:56,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:56,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:56,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1967970000, now seen corresponding path program 1 times [2021-11-19 15:05:56,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:56,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824597208] [2021-11-19 15:05:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:56,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:56,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:56,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:56,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:05:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:57,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 15:05:57,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:00,113 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 15:06:00,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 127 treesize of output 35 [2021-11-19 15:06:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:06:00,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:05,141 INFO L354 Elim1Store]: treesize reduction 1502, result has 4.5 percent of original size [2021-11-19 15:06:05,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 129 treesize of output 107 [2021-11-19 15:06:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:06:06,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:06,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824597208] [2021-11-19 15:06:06,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824597208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:06,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [971884598] [2021-11-19 15:06:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:06,253 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:06,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:06,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 15:06:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 15:06:09,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:09,567 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 19 treesize of output 1 [2021-11-19 15:06:12,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:06:12,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 15:06:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:06:12,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:06:16,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [971884598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:16,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693617985] [2021-11-19 15:06:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:16,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:06:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:06:16,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:06:16,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 15:06:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:17,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 15:06:17,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:17,313 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 19 treesize of output 1 [2021-11-19 15:06:19,181 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 15:06:19,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 127 treesize of output 35 [2021-11-19 15:06:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:06:19,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:06:20,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693617985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:20,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:06:20,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14, 11, 13, 11] total 27 [2021-11-19 15:06:20,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818920618] [2021-11-19 15:06:20,307 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:06:20,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-19 15:06:20,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-19 15:06:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=620, Unknown=1, NotChecked=0, Total=702 [2021-11-19 15:06:20,311 INFO L87 Difference]: Start difference. First operand 128 states and 185 transitions. Second operand has 27 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 13 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2021-11-19 15:06:22,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:06:24,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:06:26,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:06:28,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:06:44,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:06:48,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:07:04,175 INFO L93 Difference]: Finished difference Result 277 states and 404 transitions. [2021-11-19 15:07:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 15:07:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 13 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 68 [2021-11-19 15:07:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:07:04,179 INFO L225 Difference]: With dead ends: 277 [2021-11-19 15:07:04,180 INFO L226 Difference]: Without dead ends: 251 [2021-11-19 15:07:04,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 363 SyntacticMatches, 18 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=269, Invalid=1888, Unknown=5, NotChecked=0, Total=2162 [2021-11-19 15:07:04,182 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 181 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 31 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 349 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:07:04,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 2487 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1703 Invalid, 4 Unknown, 349 Unchecked, 30.2s Time] [2021-11-19 15:07:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-19 15:07:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 172. [2021-11-19 15:07:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 144 states have internal predecessors, (198), 19 states have call successors, (19), 9 states have call predecessors, (19), 12 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2021-11-19 15:07:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 241 transitions. [2021-11-19 15:07:04,210 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 241 transitions. Word has length 68 [2021-11-19 15:07:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:07:04,211 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 241 transitions. [2021-11-19 15:07:04,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 13 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2021-11-19 15:07:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 241 transitions. [2021-11-19 15:07:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 15:07:04,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:07:04,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:07:04,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 15:07:04,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:04,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:04,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:04,853 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:07:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:07:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash -525780671, now seen corresponding path program 1 times [2021-11-19 15:07:04,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:07:04,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663301590] [2021-11-19 15:07:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:04,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:07:04,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:07:04,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:07:04,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:07:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:05,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 15:07:05,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:08,163 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 15:07:08,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 127 treesize of output 35 [2021-11-19 15:07:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:07:09,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:14,417 INFO L354 Elim1Store]: treesize reduction 1502, result has 4.5 percent of original size [2021-11-19 15:07:14,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 194 treesize of output 126 [2021-11-19 15:07:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:07:15,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:07:15,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663301590] [2021-11-19 15:07:15,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663301590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:15,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1479209830] [2021-11-19 15:07:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:15,956 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:15,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:07:15,964 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:07:15,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:07:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:19,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 15:07:19,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:19,497 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 19 treesize of output 1 [2021-11-19 15:07:22,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:07:22,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 15:07:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:07:23,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:07:30,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1479209830] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:30,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674929181] [2021-11-19 15:07:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:30,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:07:30,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:07:30,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:07:30,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 15:07:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:31,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 15:07:31,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:32,126 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 19 treesize of output 1 [2021-11-19 15:07:33,857 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 15:07:33,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 127 treesize of output 35 [2021-11-19 15:07:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:07:34,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 15:07:35,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674929181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:35,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:07:35,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 14, 11, 13, 11] total 38 [2021-11-19 15:07:35,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959758839] [2021-11-19 15:07:35,160 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:07:35,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 15:07:35,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:07:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 15:07:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1269, Unknown=1, NotChecked=0, Total=1406 [2021-11-19 15:07:35,163 INFO L87 Difference]: Start difference. First operand 172 states and 241 transitions. Second operand has 38 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 34 states have internal predecessors, (111), 16 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) [2021-11-19 15:07:37,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:39,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:41,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:43,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:45,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:53,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:56,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:07:58,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:08:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:14,713 INFO L93 Difference]: Finished difference Result 287 states and 411 transitions. [2021-11-19 15:08:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 15:08:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 34 states have internal predecessors, (111), 16 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) Word has length 69 [2021-11-19 15:08:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:14,719 INFO L225 Difference]: With dead ends: 287 [2021-11-19 15:08:14,719 INFO L226 Difference]: Without dead ends: 257 [2021-11-19 15:08:14,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 358 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=353, Invalid=2837, Unknown=2, NotChecked=0, Total=3192 [2021-11-19 15:08:14,721 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 354 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 56 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:14,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1918 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1183 Invalid, 5 Unknown, 298 Unchecked, 32.0s Time] [2021-11-19 15:08:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-19 15:08:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 172. [2021-11-19 15:08:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 141 states have (on average 1.4184397163120568) internal successors, (200), 145 states have internal predecessors, (200), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2021-11-19 15:08:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 241 transitions. [2021-11-19 15:08:14,746 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 241 transitions. Word has length 69 [2021-11-19 15:08:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:14,746 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 241 transitions. [2021-11-19 15:08:14,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 34 states have internal predecessors, (111), 16 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) [2021-11-19 15:08:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 241 transitions. [2021-11-19 15:08:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 15:08:14,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:14,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:08:14,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-19 15:08:15,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:15,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:15,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:15,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1327314263, now seen corresponding path program 1 times [2021-11-19 15:08:15,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:15,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510316356] [2021-11-19 15:08:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:15,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:15,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:15,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:15,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ab798e-2fc8-4636-b92a-b0db7d4b1930/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:08:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:16,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 15:08:16,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:18,016 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:08:18,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 15:08:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:08:18,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:19,729 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 15:08:19,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1 [2021-11-19 15:08:32,143 WARN L227 SmtUtils]: Spent 11.76s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:08:32,151 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 15:08:32,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 129 treesize of output 772