./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:14:05,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:14:05,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:14:05,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:14:05,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:14:05,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:14:05,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:14:05,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:14:05,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:14:05,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:14:05,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:14:05,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:14:05,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:14:05,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:14:05,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:14:05,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:14:05,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:14:05,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:14:05,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:14:05,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:14:05,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:14:05,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:14:05,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:14:05,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:14:05,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:14:05,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:14:05,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:14:05,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:14:05,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:14:05,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:14:05,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:14:05,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:14:05,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:14:05,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:14:05,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:14:05,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:14:05,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:14:05,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:14:05,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:14:05,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:14:05,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:14:05,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:14:05,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:14:05,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:14:05,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:14:05,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:14:05,533 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:14:05,533 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:14:05,533 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:14:05,533 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:14:05,533 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:14:05,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:14:05,534 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:14:05,534 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:14:05,534 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:14:05,534 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:14:05,535 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:14:05,535 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:14:05,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:14:05,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:14:05,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:14:05,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:14:05,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:14:05,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:14:05,537 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:14:05,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:14:05,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:14:05,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:14:05,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:14:05,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:14:05,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:05,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:14:05,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:14:05,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:14:05,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:14:05,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:14:05,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:14:05,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:14:05,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:14:05,541 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_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-12 23:14:05,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:14:05,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:14:05,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:14:05,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:14:05,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:14:05,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-12 23:14:05,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/fd2060fc0/6a2ca54e130b443fa281796cfbbc976f/FLAGa0feb2cbf [2021-11-12 23:14:06,693 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:14:06,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-12 23:14:06,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/fd2060fc0/6a2ca54e130b443fa281796cfbbc976f/FLAGa0feb2cbf [2021-11-12 23:14:07,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/fd2060fc0/6a2ca54e130b443fa281796cfbbc976f [2021-11-12 23:14:07,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:14:07,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:14:07,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:07,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:14:07,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:14:07,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:07" (1/1) ... [2021-11-12 23:14:07,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190b1a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:07, skipping insertion in model container [2021-11-12 23:14:07,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:07" (1/1) ... [2021-11-12 23:14:07,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:14:07,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:07,675 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-12 23:14:07,683 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-12 23:14:07,712 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:14:07,720 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:14:08,592 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:08,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:14:08,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:14:09,000 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:14:09,001 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:14:09,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:14:09,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:14:09,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:14:09,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:14:09,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:14:09,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:14:09,195 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:14:09,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:09,312 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:09,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:09,502 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:14:09,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cb4fcc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:09, skipping insertion in model container [2021-11-12 23:14:09,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:09,503 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:14:09,505 INFO L158 Benchmark]: Toolchain (without parser) took 2292.31ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 85.2MB in the beginning and 128.9MB in the end (delta: -43.7MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2021-11-12 23:14:09,513 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:14:09,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2289.69ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 85.0MB in the beginning and 128.9MB in the end (delta: -43.9MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2021-11-12 23:14:09,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2289.69ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 85.0MB in the beginning and 128.9MB in the end (delta: -43.9MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:14:11,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:14:11,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:14:11,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:14:11,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:14:11,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:14:11,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:14:11,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:14:11,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:14:11,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:14:11,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:14:11,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:14:11,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:14:11,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:14:11,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:14:11,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:14:11,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:14:11,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:14:11,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:14:11,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:14:11,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:14:11,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:14:11,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:14:11,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:14:11,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:14:11,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:14:11,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:14:11,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:14:11,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:14:11,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:14:11,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:14:11,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:14:11,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:14:11,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:14:11,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:14:11,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:14:11,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:14:11,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:14:11,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:14:11,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:14:11,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:14:11,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:14:11,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:14:11,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:14:11,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:14:11,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:14:11,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:14:11,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:14:11,851 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:14:11,851 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:14:11,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:14:11,852 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:14:11,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:14:11,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:14:11,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:14:11,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:14:11,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:14:11,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:14:11,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:14:11,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:14:11,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:14:11,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:14:11,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:14:11,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:14:11,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:14:11,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:14:11,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:11,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:14:11,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:14:11,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:14:11,858 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:14:11,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:14:11,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:14:11,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:14:11,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:14:11,859 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_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-12 23:14:12,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:14:12,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:14:12,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:14:12,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:14:12,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:14:12,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-12 23:14:12,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/09f06ac23/02dd0b7337074ec6b1162629a213e9c7/FLAG35d972a14 [2021-11-12 23:14:13,311 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:14:13,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-12 23:14:13,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/09f06ac23/02dd0b7337074ec6b1162629a213e9c7/FLAG35d972a14 [2021-11-12 23:14:13,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/data/09f06ac23/02dd0b7337074ec6b1162629a213e9c7 [2021-11-12 23:14:13,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:14:13,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:14:13,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:13,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:14:13,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:14:13,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:13" (1/1) ... [2021-11-12 23:14:13,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354ccb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:13, skipping insertion in model container [2021-11-12 23:14:13,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:14:13" (1/1) ... [2021-11-12 23:14:13,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:14:13,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:14,249 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-12 23:14:14,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-12 23:14:14,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:14:14,295 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:14:15,543 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,547 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,576 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,579 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:15,581 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:14:16,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:14:16,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:14:16,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:14:16,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:14:16,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:14:16,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:14:16,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:14:16,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:14:16,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:14:16,229 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:14:16,318 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:16,504 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:14:16,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:14:16,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-12 23:14:16,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-12 23:14:16,557 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:14:16,557 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:14:16,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:14:16,652 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:14:16,653 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:14:16,654 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:14:16,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:14:16,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:14:16,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:14:16,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:14:16,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:14:16,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:14:16,676 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:14:16,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:16,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:14:16,816 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-12 23:14:16,816 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-12 23:14:16,818 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:14:16,818 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:14:16,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,876 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:16,921 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:14:16,922 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:14:16,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:14:16,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:14:16,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:14:16,928 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:14:16,928 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:14:16,929 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:14:16,929 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:14:16,930 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:14:16,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:14:17,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:17,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:14:17,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:14:17,491 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:14:17,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17 WrapperNode [2021-11-12 23:14:17,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:14:17,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:14:17,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:14:17,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:14:17,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:14:17,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:14:17,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:14:17,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:14:17,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:14:17,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:14:17,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:14:17,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:14:17,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (1/1) ... [2021-11-12 23:14:17,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:14:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:14:17,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:14:17,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:14:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:14:18,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:14:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-12 23:14:18,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-12 23:14:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:14:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:14:18,002 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:14:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:14:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:14:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:14:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:14:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:14:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2021-11-12 23:14:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2021-11-12 23:14:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:14:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:14:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:14:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:14:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:14:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:14:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:14:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:14:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:14:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:14:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:14:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:14:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:14:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:14:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:14:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:14:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:14:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:14:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:14:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:14:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:14:31,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:14:31,165 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:14:31,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:14:31 BoogieIcfgContainer [2021-11-12 23:14:31,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:14:31,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:14:31,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:14:31,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:14:31,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:14:13" (1/3) ... [2021-11-12 23:14:31,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3182a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:14:31, skipping insertion in model container [2021-11-12 23:14:31,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:14:17" (2/3) ... [2021-11-12 23:14:31,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3182a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:14:31, skipping insertion in model container [2021-11-12 23:14:31,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:14:31" (3/3) ... [2021-11-12 23:14:31,175 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2021-11-12 23:14:31,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:14:31,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:14:31,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:14:31,239 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:14:31,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:14:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-12 23:14:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:14:31,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:31,277 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:31,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -963084782, now seen corresponding path program 1 times [2021-11-12 23:14:31,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:31,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797439355] [2021-11-12 23:14:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:31,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:31,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:31,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:14:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:35,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:14:35,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:14:35,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-12 23:14:35,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:35,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797439355] [2021-11-12 23:14:35,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797439355] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:35,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:35,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:14:35,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478019251] [2021-11-12 23:14:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:35,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:14:35,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:14:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:14:36,024 INFO L87 Difference]: Start difference. First operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:14:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:36,087 INFO L93 Difference]: Finished difference Result 252 states and 347 transitions. [2021-11-12 23:14:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:14:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-11-12 23:14:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:36,101 INFO L225 Difference]: With dead ends: 252 [2021-11-12 23:14:36,101 INFO L226 Difference]: Without dead ends: 121 [2021-11-12 23:14:36,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:14:36,109 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:36,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 5.41ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:14:36,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-12 23:14:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-12 23:14:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 83 states have internal predecessors, (100), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:14:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2021-11-12 23:14:36,155 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 65 [2021-11-12 23:14:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:36,155 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2021-11-12 23:14:36,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:14:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2021-11-12 23:14:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:14:36,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:36,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:36,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:36,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:36,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 178526858, now seen corresponding path program 1 times [2021-11-12 23:14:36,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:36,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772062608] [2021-11-12 23:14:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:36,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:36,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:36,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:36,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:14:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:40,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:14:40,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:14:40,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:14:41,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:41,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772062608] [2021-11-12 23:14:41,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772062608] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:41,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:41,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:14:41,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884220656] [2021-11-12 23:14:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:41,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:41,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:41,345 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:14:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:41,553 INFO L93 Difference]: Finished difference Result 220 states and 286 transitions. [2021-11-12 23:14:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:41,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2021-11-12 23:14:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:41,562 INFO L225 Difference]: With dead ends: 220 [2021-11-12 23:14:41,562 INFO L226 Difference]: Without dead ends: 124 [2021-11-12 23:14:41,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:41,564 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 47 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:41,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 386 Invalid, 25 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 179.21ms Time] [2021-11-12 23:14:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-12 23:14:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-12 23:14:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 86 states have internal predecessors, (102), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2021-11-12 23:14:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2021-11-12 23:14:41,598 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 65 [2021-11-12 23:14:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:41,599 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2021-11-12 23:14:41,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:14:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2021-11-12 23:14:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 23:14:41,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:41,611 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:41,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:14:41,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:41,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 253294421, now seen corresponding path program 1 times [2021-11-12 23:14:41,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:41,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088733923] [2021-11-12 23:14:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:41,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:41,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:41,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:14:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:45,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:14:45,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:46,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:14:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:14:47,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:48,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 23:14:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:14:48,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:48,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088733923] [2021-11-12 23:14:48,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088733923] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:48,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:48,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:14:48,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189737754] [2021-11-12 23:14:48,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:48,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:14:48,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:14:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:14:48,485 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-12 23:14:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:48,823 INFO L93 Difference]: Finished difference Result 243 states and 311 transitions. [2021-11-12 23:14:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:14:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 71 [2021-11-12 23:14:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:48,829 INFO L225 Difference]: With dead ends: 243 [2021-11-12 23:14:48,829 INFO L226 Difference]: Without dead ends: 137 [2021-11-12 23:14:48,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:14:48,832 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 24 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 207.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:48,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 999 Invalid, 90 Unknown, 0 Unchecked, 8.09ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 60 Unchecked, 207.46ms Time] [2021-11-12 23:14:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-12 23:14:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-12 23:14:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.21875) internal successors, (117), 98 states have internal predecessors, (117), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-12 23:14:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 174 transitions. [2021-11-12 23:14:48,847 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 174 transitions. Word has length 71 [2021-11-12 23:14:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:48,847 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 174 transitions. [2021-11-12 23:14:48,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-12 23:14:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 174 transitions. [2021-11-12 23:14:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 23:14:48,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:48,849 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:48,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:14:49,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:49,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1592072745, now seen corresponding path program 1 times [2021-11-12 23:14:49,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:49,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276842104] [2021-11-12 23:14:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:49,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:49,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:49,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:49,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:14:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:53,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:14:53,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:14:53,418 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:53,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276842104] [2021-11-12 23:14:53,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276842104] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:53,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:53,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:14:53,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824492289] [2021-11-12 23:14:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:53,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:53,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:53,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:53,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:53,429 INFO L87 Difference]: Start difference. First operand 137 states and 174 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:14:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:53,490 INFO L93 Difference]: Finished difference Result 246 states and 320 transitions. [2021-11-12 23:14:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:53,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2021-11-12 23:14:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:53,494 INFO L225 Difference]: With dead ends: 246 [2021-11-12 23:14:53,494 INFO L226 Difference]: Without dead ends: 143 [2021-11-12 23:14:53,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:53,496 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 20 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:53,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 457 Invalid, 16 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 36.98ms Time] [2021-11-12 23:14:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-12 23:14:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2021-11-12 23:14:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 92 states have internal predecessors, (111), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2021-11-12 23:14:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2021-11-12 23:14:53,524 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 71 [2021-11-12 23:14:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:53,526 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2021-11-12 23:14:53,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:14:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2021-11-12 23:14:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:14:53,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:53,528 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:53,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:14:53,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:53,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash 633520157, now seen corresponding path program 1 times [2021-11-12 23:14:53,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:53,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832866871] [2021-11-12 23:14:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:53,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:53,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:53,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:14:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:14:57,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:14:58,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:14:59,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:59,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832866871] [2021-11-12 23:14:59,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832866871] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:14:59,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:14:59,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:14:59,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092236374] [2021-11-12 23:14:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:59,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:59,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:14:59,121 INFO L87 Difference]: Start difference. First operand 131 states and 167 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:15:01,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:03,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:04,587 INFO L93 Difference]: Finished difference Result 252 states and 330 transitions. [2021-11-12 23:15:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:15:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-11-12 23:15:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:04,592 INFO L225 Difference]: With dead ends: 252 [2021-11-12 23:15:04,592 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 23:15:04,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:15:04,594 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 42 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5053.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 5234.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:04,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 527 Invalid, 117 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 2 Unknown, 37 Unchecked, 5234.58ms Time] [2021-11-12 23:15:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 23:15:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2021-11-12 23:15:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2021-11-12 23:15:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2021-11-12 23:15:04,610 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 75 [2021-11-12 23:15:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:04,611 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2021-11-12 23:15:04,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:15:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2021-11-12 23:15:04,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:15:04,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:04,613 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:04,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:04,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:04,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash -738287141, now seen corresponding path program 1 times [2021-11-12 23:15:04,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:04,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250710646] [2021-11-12 23:15:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:04,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:04,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:04,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:15:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:08,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:15:08,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:15:10,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 23:15:12,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:12,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250710646] [2021-11-12 23:15:12,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250710646] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:12,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:15:12,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 23:15:12,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727869786] [2021-11-12 23:15:12,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:12,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:15:12,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:15:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:15:12,963 INFO L87 Difference]: Start difference. First operand 140 states and 179 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:15:15,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:17,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:20,244 INFO L93 Difference]: Finished difference Result 260 states and 340 transitions. [2021-11-12 23:15:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:15:20,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2021-11-12 23:15:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:20,249 INFO L225 Difference]: With dead ends: 260 [2021-11-12 23:15:20,249 INFO L226 Difference]: Without dead ends: 149 [2021-11-12 23:15:20,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:15:20,251 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 38 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5496.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 5749.84ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:20,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1393 Invalid, 450 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 2 Unknown, 258 Unchecked, 5749.84ms Time] [2021-11-12 23:15:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-12 23:15:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2021-11-12 23:15:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 106 states have internal predecessors, (125), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-12 23:15:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2021-11-12 23:15:20,263 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 75 [2021-11-12 23:15:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:20,264 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2021-11-12 23:15:20,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:15:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2021-11-12 23:15:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:15:20,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:20,266 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:20,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:20,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:20,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:20,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1527006495, now seen corresponding path program 1 times [2021-11-12 23:15:20,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:20,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514622340] [2021-11-12 23:15:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:20,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:20,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:20,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:20,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:15:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:24,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:15:24,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:15:24,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:15:24,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:24,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514622340] [2021-11-12 23:15:24,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514622340] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:24,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:15:24,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:15:24,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102644389] [2021-11-12 23:15:24,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:24,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:15:24,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:15:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:15:24,831 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:15:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:24,911 INFO L93 Difference]: Finished difference Result 264 states and 338 transitions. [2021-11-12 23:15:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:15:24,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-11-12 23:15:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:24,913 INFO L225 Difference]: With dead ends: 264 [2021-11-12 23:15:24,913 INFO L226 Difference]: Without dead ends: 149 [2021-11-12 23:15:24,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:15:24,915 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 34 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:24,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 51.89ms Time] [2021-11-12 23:15:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-12 23:15:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2021-11-12 23:15:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-12 23:15:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2021-11-12 23:15:24,933 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 75 [2021-11-12 23:15:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:24,934 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2021-11-12 23:15:24,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:15:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2021-11-12 23:15:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:15:24,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:24,936 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:24,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:25,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:25,152 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 629613217, now seen corresponding path program 1 times [2021-11-12 23:15:25,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:25,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042259100] [2021-11-12 23:15:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:25,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:25,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:25,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:25,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:15:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:29,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:15:29,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:15:29,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 23:15:29,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:29,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042259100] [2021-11-12 23:15:29,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042259100] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:15:29,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:15:29,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 23:15:29,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145007594] [2021-11-12 23:15:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:29,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:15:29,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:15:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:15:29,767 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:15:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:30,087 INFO L93 Difference]: Finished difference Result 263 states and 332 transitions. [2021-11-12 23:15:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:15:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2021-11-12 23:15:30,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:30,090 INFO L225 Difference]: With dead ends: 263 [2021-11-12 23:15:30,090 INFO L226 Difference]: Without dead ends: 150 [2021-11-12 23:15:30,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:15:30,091 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 12 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:30,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1133 Invalid, 102 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 237.71ms Time] [2021-11-12 23:15:30,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-12 23:15:30,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-11-12 23:15:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-12 23:15:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2021-11-12 23:15:30,101 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 75 [2021-11-12 23:15:30,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:30,102 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2021-11-12 23:15:30,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 23:15:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2021-11-12 23:15:30,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:15:30,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:30,104 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:30,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:30,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:30,312 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash -596066330, now seen corresponding path program 1 times [2021-11-12 23:15:30,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:30,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845951354] [2021-11-12 23:15:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:30,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:30,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:30,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:30,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:15:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:34,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:15:34,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-12 23:15:34,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:15:34,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:34,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845951354] [2021-11-12 23:15:34,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845951354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:15:34,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:15:34,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 23:15:34,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544635407] [2021-11-12 23:15:34,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:34,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:15:34,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:15:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:15:34,942 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-12 23:15:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:35,326 INFO L93 Difference]: Finished difference Result 244 states and 304 transitions. [2021-11-12 23:15:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:15:35,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 77 [2021-11-12 23:15:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:35,331 INFO L225 Difference]: With dead ends: 244 [2021-11-12 23:15:35,331 INFO L226 Difference]: Without dead ends: 138 [2021-11-12 23:15:35,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:15:35,332 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 51 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 345.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:35,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 666 Invalid, 53 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 345.91ms Time] [2021-11-12 23:15:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-12 23:15:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-12 23:15:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 99 states have internal predecessors, (115), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-12 23:15:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 172 transitions. [2021-11-12 23:15:35,342 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 172 transitions. Word has length 77 [2021-11-12 23:15:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:35,343 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 172 transitions. [2021-11-12 23:15:35,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-12 23:15:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 172 transitions. [2021-11-12 23:15:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:15:35,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:35,345 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:35,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:35,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:35,568 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -798186575, now seen corresponding path program 1 times [2021-11-12 23:15:35,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:35,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668279097] [2021-11-12 23:15:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:35,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:35,575 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:35,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:15:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:15:39,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:15:42,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:55,783 WARN L227 SmtUtils]: Spent 10.23s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:15:55,787 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 23:15:55,788 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 132 treesize of output 771 [2021-11-12 23:24:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:24:03,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:03,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668279097] [2021-11-12 23:24:03,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668279097] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:24:03,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1015672458] [2021-11-12 23:24:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:03,507 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:03,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:24:03,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:24:03,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 23:24:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:04,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:24:04,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:24:05,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:24:05,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1015672458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:05,792 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:24:05,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13, 11] total 23 [2021-11-12 23:24:05,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167958526] [2021-11-12 23:24:05,792 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:05,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:05,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:05,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:24:05,794 INFO L87 Difference]: Start difference. First operand 138 states and 172 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:24:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:05,883 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2021-11-12 23:24:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-11-12 23:24:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:05,886 INFO L225 Difference]: With dead ends: 238 [2021-11-12 23:24:05,886 INFO L226 Difference]: Without dead ends: 141 [2021-11-12 23:24:05,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:24:05,887 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 15 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:05,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 578 Invalid, 20 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 78.86ms Time] [2021-11-12 23:24:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-12 23:24:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-12 23:24:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.17) internal successors, (117), 102 states have internal predecessors, (117), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-11-12 23:24:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 175 transitions. [2021-11-12 23:24:05,897 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 175 transitions. Word has length 83 [2021-11-12 23:24:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:05,897 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 175 transitions. [2021-11-12 23:24:05,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:24:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 175 transitions. [2021-11-12 23:24:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 23:24:05,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:05,898 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:05,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:06,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-12 23:24:06,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:06,313 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 575908150, now seen corresponding path program 1 times [2021-11-12 23:24:06,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:06,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688860545] [2021-11-12 23:24:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:06,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:06,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:06,317 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:06,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57080126-3ba7-482a-a413-17cec637e453/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:24:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:10,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:24:10,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:24:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:25,830 WARN L227 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:24:25,833 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-12 23:24:25,833 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 132 treesize of output 771