./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:46:43,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:46:43,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:46:43,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:46:43,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:46:43,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:46:43,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:46:43,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:46:43,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:46:43,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:46:43,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:46:43,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:46:43,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:46:43,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:46:43,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:46:43,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:46:43,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:46:43,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:46:43,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:46:43,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:46:43,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:46:43,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:46:43,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:46:43,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:46:43,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:46:43,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:46:43,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:46:43,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:46:43,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:46:43,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:46:43,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:46:43,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:46:43,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:46:43,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:46:43,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:46:43,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:46:43,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:46:43,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:46:43,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:46:43,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:46:43,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:46:43,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:46:43,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:46:43,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:46:43,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:46:43,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:46:43,998 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:46:43,998 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:46:43,998 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:46:43,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:46:43,998 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:46:43,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:46:44,006 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:46:44,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:46:44,006 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:46:44,007 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:46:44,007 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:46:44,007 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:46:44,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:46:44,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:46:44,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:46:44,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:46:44,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:46:44,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:46:44,009 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:46:44,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:46:44,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:46:44,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:46:44,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:46:44,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:46:44,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:46:44,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:46:44,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:46:44,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:46:44,013 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:46:44,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:46:44,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:46:44,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:46:44,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:46:44,014 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_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-19 15:46:44,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:46:44,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:46:44,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:46:44,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:46:44,338 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:46:44,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-19 15:46:44,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/db4bd12a3/f35e1a120f564a2097b663d2929f7194/FLAG97b3359cb [2021-11-19 15:46:45,287 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:46:45,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-19 15:46:45,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/db4bd12a3/f35e1a120f564a2097b663d2929f7194/FLAG97b3359cb [2021-11-19 15:46:45,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/db4bd12a3/f35e1a120f564a2097b663d2929f7194 [2021-11-19 15:46:45,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:46:45,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:46:45,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:45,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:46:45,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:46:45,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:45" (1/1) ... [2021-11-19 15:46:45,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af4b578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:45, skipping insertion in model container [2021-11-19 15:46:45,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:45" (1/1) ... [2021-11-19 15:46:45,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:46:45,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:46:46,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-19 15:46:46,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-19 15:46:46,402 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:46:46,410 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:46:47,589 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,589 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,590 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,591 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,592 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,607 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:47,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:48,009 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:46:48,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:46:48,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:46:48,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:46:48,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:46:48,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:46:48,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:46:48,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:46:48,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:46:48,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:46:48,237 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:46:48,399 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:48,400 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:48,509 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:48,595 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:46:48,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76ac436e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:48, skipping insertion in model container [2021-11-19 15:46:48,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:48,599 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:46:48,601 INFO L158 Benchmark]: Toolchain (without parser) took 2806.15ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 79.0MB in the beginning and 112.0MB in the end (delta: -33.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-11-19 15:46:48,602 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory was 95.8MB in the beginning and 95.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:46:48,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2801.35ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 78.7MB in the beginning and 112.0MB in the end (delta: -33.3MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-11-19 15:46:48,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory was 95.8MB in the beginning and 95.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2801.35ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 78.7MB in the beginning and 112.0MB in the end (delta: -33.3MB). Peak memory consumption was 44.6MB. 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_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:46:50,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:46:50,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:46:50,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:46:50,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:46:50,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:46:51,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:46:51,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:46:51,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:46:51,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:46:51,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:46:51,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:46:51,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:46:51,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:46:51,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:46:51,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:46:51,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:46:51,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:46:51,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:46:51,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:46:51,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:46:51,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:46:51,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:46:51,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:46:51,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:46:51,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:46:51,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:46:51,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:46:51,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:46:51,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:46:51,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:46:51,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:46:51,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:46:51,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:46:51,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:46:51,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:46:51,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:46:51,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:46:51,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:46:51,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:46:51,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:46:51,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:46:51,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:46:51,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:46:51,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:46:51,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:46:51,128 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:46:51,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:46:51,128 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:46:51,128 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:46:51,129 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:46:51,129 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:46:51,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:46:51,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:46:51,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:46:51,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:46:51,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:46:51,132 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:46:51,132 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:46:51,133 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:46:51,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:46:51,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:46:51,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:46:51,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:46:51,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:46:51,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:46:51,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:46:51,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:46:51,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:46:51,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:46:51,135 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:46:51,135 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:51,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:46:51,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:46:51,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:46:51,136 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_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-19 15:46:51,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:46:51,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:46:51,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:46:51,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:46:51,544 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:46:51,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-19 15:46:51,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/a90517fd3/5fff00d2dcaa4db486c8d4ed406318a9/FLAG521d25a86 [2021-11-19 15:46:52,720 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:46:52,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-19 15:46:52,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/a90517fd3/5fff00d2dcaa4db486c8d4ed406318a9/FLAG521d25a86 [2021-11-19 15:46:52,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/data/a90517fd3/5fff00d2dcaa4db486c8d4ed406318a9 [2021-11-19 15:46:52,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:46:52,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:46:52,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:52,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:46:52,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:46:52,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:52" (1/1) ... [2021-11-19 15:46:52,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25898b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:52, skipping insertion in model container [2021-11-19 15:46:52,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:46:52" (1/1) ... [2021-11-19 15:46:52,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:46:52,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:46:53,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-19 15:46:53,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-19 15:46:53,297 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:46:53,306 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:46:54,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,760 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,762 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,763 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,765 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,794 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,797 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:54,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:55,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:46:55,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:46:55,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:46:55,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:46:55,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:46:55,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:46:55,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:46:55,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:46:55,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:46:55,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:46:55,548 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:46:55,671 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:55,671 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:55,753 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:55,853 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:46:55,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:46:55,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-19 15:46:55,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-19 15:46:55,960 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:46:55,963 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:46:56,036 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,039 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,040 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,041 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,042 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,056 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,057 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,113 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:46:56,114 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:46:56,114 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:46:56,115 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:46:56,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:46:56,116 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:46:56,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:46:56,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:46:56,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:46:56,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:46:56,138 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:46:56,226 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,226 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,264 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:56,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:46:56,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-19 15:46:56,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-19 15:46:56,375 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:46:56,376 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:46:56,419 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,419 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,421 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,426 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,427 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,427 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,428 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:46:56,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:46:56,487 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:46:56,490 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:46:56,491 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:46:56,491 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:46:56,492 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:46:56,492 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:46:56,493 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:46:56,494 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:46:56,533 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:46:56,666 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,681 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:46:56,736 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:46:56,985 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:46:56,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56 WrapperNode [2021-11-19 15:46:56,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:46:56,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:46:56,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:46:56,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:46:56,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,204 INFO L137 Inliner]: procedures = 713, calls = 2653, calls flagged for inlining = 65, calls inlined = 11, statements flattened = 931 [2021-11-19 15:46:57,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:46:57,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:46:57,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:46:57,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:46:57,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:46:57,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:46:57,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:46:57,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:46:57,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (1/1) ... [2021-11-19 15:46:57,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:46:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:46:57,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:46:57,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:46:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 15:46:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 15:46:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 15:46:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 15:46:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:46:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:46:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:46:57,477 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:46:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:46:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:46:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:46:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:46:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:46:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:46:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:46:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-19 15:46:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-19 15:46:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:46:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:46:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:46:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:46:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:46:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:46:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 15:46:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 15:46:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:46:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:46:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:46:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:46:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:46:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-19 15:46:57,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-19 15:46:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:46:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:46:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:46:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 15:46:57,481 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 15:46:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:46:57,482 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:46:57,842 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:46:57,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:47:01,986 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:47:01,995 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:47:01,995 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:47:01,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:01 BoogieIcfgContainer [2021-11-19 15:47:01,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:47:01,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:47:01,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:47:02,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:47:02,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:46:52" (1/3) ... [2021-11-19 15:47:02,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bcc661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:47:02, skipping insertion in model container [2021-11-19 15:47:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:46:56" (2/3) ... [2021-11-19 15:47:02,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bcc661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:47:02, skipping insertion in model container [2021-11-19 15:47:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:01" (3/3) ... [2021-11-19 15:47:02,009 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-19 15:47:02,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:47:02,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:47:02,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:47:02,096 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:47:02,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:47:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-19 15:47:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:47:02,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:02,133 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:02,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 60600436, now seen corresponding path program 1 times [2021-11-19 15:47:02,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:02,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835480814] [2021-11-19 15:47:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:02,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:02,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:02,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:02,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:47:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:47:03,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 15:47:03,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-19 15:47:03,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:03,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835480814] [2021-11-19 15:47:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835480814] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:03,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:03,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 15:47:03,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154297748] [2021-11-19 15:47:03,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:47:03,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:47:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:47:04,005 INFO L87 Difference]: Start difference. First operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:04,091 INFO L93 Difference]: Finished difference Result 318 states and 459 transitions. [2021-11-19 15:47:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:47:04,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-11-19 15:47:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:04,109 INFO L225 Difference]: With dead ends: 318 [2021-11-19 15:47:04,109 INFO L226 Difference]: Without dead ends: 155 [2021-11-19 15:47:04,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:47:04,123 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:04,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-19 15:47:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-19 15:47:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-19 15:47:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2021-11-19 15:47:04,203 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 127 [2021-11-19 15:47:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:04,203 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-11-19 15:47:04,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2021-11-19 15:47:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 15:47:04,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:04,216 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:04,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:04,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:04,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:04,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1048890326, now seen corresponding path program 1 times [2021-11-19 15:47:04,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:04,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350650355] [2021-11-19 15:47:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:04,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:04,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:04,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:47:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:05,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:47:05,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 15:47:05,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 15:47:06,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:06,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350650355] [2021-11-19 15:47:06,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350650355] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:06,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:06,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:47:06,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246619517] [2021-11-19 15:47:06,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:06,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:06,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:06,276 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:06,470 INFO L93 Difference]: Finished difference Result 301 states and 403 transitions. [2021-11-19 15:47:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-11-19 15:47:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:06,479 INFO L225 Difference]: With dead ends: 301 [2021-11-19 15:47:06,479 INFO L226 Difference]: Without dead ends: 158 [2021-11-19 15:47:06,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:06,484 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 58 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:06,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 503 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:47:06,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-19 15:47:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-19 15:47:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2233009708737863) internal successors, (126), 105 states have internal predecessors, (126), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-11-19 15:47:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2021-11-19 15:47:06,520 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 127 [2021-11-19 15:47:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:06,522 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2021-11-19 15:47:06,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2021-11-19 15:47:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 15:47:06,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:06,532 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:06,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:06,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:06,745 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash -681088923, now seen corresponding path program 1 times [2021-11-19 15:47:06,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:06,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987376567] [2021-11-19 15:47:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:06,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:06,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:06,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:47:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:07,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:47:07,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 15:47:08,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 15:47:08,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:08,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987376567] [2021-11-19 15:47:08,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987376567] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:08,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:08,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:47:08,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520482395] [2021-11-19 15:47:08,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:08,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:08,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:08,789 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:47:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:08,966 INFO L93 Difference]: Finished difference Result 282 states and 381 transitions. [2021-11-19 15:47:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 129 [2021-11-19 15:47:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:08,971 INFO L225 Difference]: With dead ends: 282 [2021-11-19 15:47:08,971 INFO L226 Difference]: Without dead ends: 161 [2021-11-19 15:47:08,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:08,973 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 57 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:08,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 505 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:47:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-19 15:47:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-19 15:47:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-11-19 15:47:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2021-11-19 15:47:08,992 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 129 [2021-11-19 15:47:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:08,993 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2021-11-19 15:47:08,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:47:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2021-11-19 15:47:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-19 15:47:08,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:08,995 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:09,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:09,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:09,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 595972048, now seen corresponding path program 1 times [2021-11-19 15:47:09,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:09,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314145479] [2021-11-19 15:47:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:09,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:09,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:09,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:09,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:47:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:10,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 15:47:10,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:10,597 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 [2021-11-19 15:47:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 15:47:11,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:12,452 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 [2021-11-19 15:47:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 15:47:12,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:12,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314145479] [2021-11-19 15:47:12,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314145479] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:12,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:12,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 15:47:12,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983446495] [2021-11-19 15:47:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:12,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:47:12,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:47:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:47:12,766 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-19 15:47:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:13,023 INFO L93 Difference]: Finished difference Result 305 states and 407 transitions. [2021-11-19 15:47:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:47:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 135 [2021-11-19 15:47:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:13,027 INFO L225 Difference]: With dead ends: 305 [2021-11-19 15:47:13,027 INFO L226 Difference]: Without dead ends: 174 [2021-11-19 15:47:13,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:47:13,030 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 23 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:13,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1468 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2021-11-19 15:47:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-19 15:47:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-19 15:47:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 120 states have internal predecessors, (143), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 15:47:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2021-11-19 15:47:13,051 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 135 [2021-11-19 15:47:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:13,051 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2021-11-19 15:47:13,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-19 15:47:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2021-11-19 15:47:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-19 15:47:13,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:13,054 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:13,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:13,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:13,277 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1964890798, now seen corresponding path program 1 times [2021-11-19 15:47:13,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:13,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660494534] [2021-11-19 15:47:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:13,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:13,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:13,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:13,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:47:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:14,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:14,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 15:47:14,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 15:47:14,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:14,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660494534] [2021-11-19 15:47:14,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660494534] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:14,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:14,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 15:47:14,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936112107] [2021-11-19 15:47:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:14,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:14,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:14,891 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:14,947 INFO L93 Difference]: Finished difference Result 308 states and 416 transitions. [2021-11-19 15:47:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:14,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 135 [2021-11-19 15:47:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:14,953 INFO L225 Difference]: With dead ends: 308 [2021-11-19 15:47:14,954 INFO L226 Difference]: Without dead ends: 180 [2021-11-19 15:47:14,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:14,955 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 20 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:14,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 613 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-19 15:47:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 168. [2021-11-19 15:47:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 114 states have internal predecessors, (137), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-11-19 15:47:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 224 transitions. [2021-11-19 15:47:14,987 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 224 transitions. Word has length 135 [2021-11-19 15:47:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:14,991 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 224 transitions. [2021-11-19 15:47:14,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 224 transitions. [2021-11-19 15:47:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:47:14,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:14,995 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:15,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:15,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:15,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash -166953128, now seen corresponding path program 1 times [2021-11-19 15:47:15,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:15,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63834082] [2021-11-19 15:47:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:15,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:15,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:15,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:15,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:47:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:16,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:47:16,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 15:47:17,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 15:47:17,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:17,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63834082] [2021-11-19 15:47:17,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63834082] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:17,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:17,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 15:47:17,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889197750] [2021-11-19 15:47:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:17,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:17,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:47:17,739 INFO L87 Difference]: Start difference. First operand 168 states and 224 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:19,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:21,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:23,137 INFO L93 Difference]: Finished difference Result 314 states and 427 transitions. [2021-11-19 15:47:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2021-11-19 15:47:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:23,143 INFO L225 Difference]: With dead ends: 314 [2021-11-19 15:47:23,143 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 15:47:23,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:47:23,145 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 42 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:23,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 724 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 2 Unknown, 42 Unchecked, 5.2s Time] [2021-11-19 15:47:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 15:47:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 177. [2021-11-19 15:47:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2021-11-19 15:47:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 236 transitions. [2021-11-19 15:47:23,166 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 236 transitions. Word has length 139 [2021-11-19 15:47:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:23,167 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 236 transitions. [2021-11-19 15:47:23,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 236 transitions. [2021-11-19 15:47:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:47:23,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:23,170 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:23,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 15:47:23,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:23,385 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:23,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2050677270, now seen corresponding path program 1 times [2021-11-19 15:47:23,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:23,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600645972] [2021-11-19 15:47:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:23,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:23,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:23,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:23,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:47:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:24,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:47:24,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 15:47:26,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-19 15:47:28,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:28,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600645972] [2021-11-19 15:47:28,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600645972] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:28,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:28,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 15:47:28,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726725938] [2021-11-19 15:47:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:28,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:47:28,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:47:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:47:28,446 INFO L87 Difference]: Start difference. First operand 177 states and 236 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:47:30,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:32,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:47:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:35,728 INFO L93 Difference]: Finished difference Result 322 states and 438 transitions. [2021-11-19 15:47:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:47:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 139 [2021-11-19 15:47:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:35,733 INFO L225 Difference]: With dead ends: 322 [2021-11-19 15:47:35,733 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 15:47:35,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 15:47:35,735 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 38 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:35,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1869 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 2 Unknown, 309 Unchecked, 5.8s Time] [2021-11-19 15:47:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 15:47:35,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2021-11-19 15:47:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 125 states have (on average 1.208) internal successors, (151), 128 states have internal predecessors, (151), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-19 15:47:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 241 transitions. [2021-11-19 15:47:35,754 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 241 transitions. Word has length 139 [2021-11-19 15:47:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:35,754 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 241 transitions. [2021-11-19 15:47:35,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:47:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 241 transitions. [2021-11-19 15:47:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:47:35,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:35,757 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:35,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:35,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:35,974 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1224791206, now seen corresponding path program 1 times [2021-11-19 15:47:35,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:35,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954260947] [2021-11-19 15:47:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:35,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:35,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:35,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:47:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:37,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:37,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 15:47:37,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-19 15:47:37,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:37,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954260947] [2021-11-19 15:47:37,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954260947] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:37,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:37,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 15:47:37,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726109718] [2021-11-19 15:47:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:37,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:37,638 INFO L87 Difference]: Start difference. First operand 182 states and 241 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:37,702 INFO L93 Difference]: Finished difference Result 326 states and 436 transitions. [2021-11-19 15:47:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2021-11-19 15:47:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:37,706 INFO L225 Difference]: With dead ends: 326 [2021-11-19 15:47:37,706 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 15:47:37,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:37,709 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 34 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:37,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 15:47:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2021-11-19 15:47:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 124 states have internal predecessors, (144), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-19 15:47:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2021-11-19 15:47:37,731 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 139 [2021-11-19 15:47:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:37,732 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2021-11-19 15:47:37,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:47:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2021-11-19 15:47:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:47:37,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:37,735 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:37,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:37,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:37,957 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash -984551460, now seen corresponding path program 1 times [2021-11-19 15:47:37,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:37,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366388263] [2021-11-19 15:47:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:37,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:37,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:37,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:47:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:38,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:47:38,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-19 15:47:39,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-19 15:47:39,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:39,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366388263] [2021-11-19 15:47:39,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366388263] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:39,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:39,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 15:47:39,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195669818] [2021-11-19 15:47:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:39,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:47:39,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:39,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:47:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:47:39,634 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:47:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:39,990 INFO L93 Difference]: Finished difference Result 325 states and 432 transitions. [2021-11-19 15:47:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:47:39,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 139 [2021-11-19 15:47:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:39,993 INFO L225 Difference]: With dead ends: 325 [2021-11-19 15:47:39,993 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 15:47:39,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:47:39,997 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 12 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:39,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1499 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:47:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 15:47:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 178. [2021-11-19 15:47:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 124 states have internal predecessors, (144), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2021-11-19 15:47:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2021-11-19 15:47:40,019 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 139 [2021-11-19 15:47:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:40,020 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2021-11-19 15:47:40,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-19 15:47:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2021-11-19 15:47:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 15:47:40,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:40,023 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:40,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:40,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:40,245 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash -287596543, now seen corresponding path program 1 times [2021-11-19 15:47:40,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:40,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790251304] [2021-11-19 15:47:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:40,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:40,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:40,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:40,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:47:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:41,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:47:41,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-19 15:47:41,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 15:47:42,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:42,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790251304] [2021-11-19 15:47:42,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790251304] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:42,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:47:42,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-19 15:47:42,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007127098] [2021-11-19 15:47:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:42,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:42,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:47:42,164 INFO L87 Difference]: Start difference. First operand 178 states and 234 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 15:47:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:42,458 INFO L93 Difference]: Finished difference Result 302 states and 398 transitions. [2021-11-19 15:47:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:47:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-11-19 15:47:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:42,460 INFO L225 Difference]: With dead ends: 302 [2021-11-19 15:47:42,460 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 15:47:42,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:47:42,461 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 78 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:42,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 835 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:47:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 15:47:42,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-19 15:47:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 119 states have (on average 1.184873949579832) internal successors, (141), 121 states have internal predecessors, (141), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 15:47:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 229 transitions. [2021-11-19 15:47:42,475 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 229 transitions. Word has length 141 [2021-11-19 15:47:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:42,475 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 229 transitions. [2021-11-19 15:47:42,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 15:47:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 229 transitions. [2021-11-19 15:47:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 15:47:42,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:42,478 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:42,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:42,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:42,691 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1441313717, now seen corresponding path program 1 times [2021-11-19 15:47:42,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:42,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686135229] [2021-11-19 15:47:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:42,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:42,694 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:42,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:47:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:43,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:47:43,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 15:47:44,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-19 15:47:44,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:47:44,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686135229] [2021-11-19 15:47:44,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686135229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:44,564 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:44,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 15:47:44,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266898184] [2021-11-19 15:47:44,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:44,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:44,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:47:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:47:44,566 INFO L87 Difference]: Start difference. First operand 175 states and 229 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 15:47:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:44,860 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2021-11-19 15:47:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:47:44,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 145 [2021-11-19 15:47:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:44,863 INFO L225 Difference]: With dead ends: 293 [2021-11-19 15:47:44,863 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 15:47:44,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:47:44,865 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 83 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:44,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 832 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:47:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 15:47:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-19 15:47:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-19 15:47:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2021-11-19 15:47:44,878 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 145 [2021-11-19 15:47:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:44,879 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2021-11-19 15:47:44,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 15:47:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2021-11-19 15:47:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 15:47:44,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:44,882 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:44,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:45,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:47:45,096 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:47:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 217050614, now seen corresponding path program 1 times [2021-11-19 15:47:45,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:47:45,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597143493] [2021-11-19 15:47:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:45,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:47:45,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:47:45,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:47:45,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:47:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:46,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 15:47:46,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 128 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 15:47:49,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:02,147 WARN L227 SmtUtils]: Spent 9.14s 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) [2021-11-19 15:48:02,152 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 15:48:02,153 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 [2021-11-19 15:55:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-19 15:55:57,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:55:57,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597143493] [2021-11-19 15:55:57,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597143493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:55:57,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [96420781] [2021-11-19 15:55:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:55:57,030 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:55:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:55:57,032 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:55:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:55:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:56:00,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 15:56:00,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:56:00,823 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 [2021-11-19 15:56:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 15:56:05,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:56:08,282 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 [2021-11-19 15:56:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-19 15:56:08,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [96420781] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:56:08,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:56:08,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 12] imperfect sequences [13, 11] total 41 [2021-11-19 15:56:08,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484150215] [2021-11-19 15:56:08,877 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:56:08,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 15:56:08,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:56:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 15:56:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 15:56:08,879 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 10 states have call successors, (39) [2021-11-19 15:56:10,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:56:12,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:56:14,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:56:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:56:19,770 INFO L93 Difference]: Finished difference Result 459 states and 635 transitions. [2021-11-19 15:56:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 15:56:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 10 states have call successors, (39) Word has length 151 [2021-11-19 15:56:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:56:19,775 INFO L225 Difference]: With dead ends: 459 [2021-11-19 15:56:19,776 INFO L226 Difference]: Without dead ends: 340 [2021-11-19 15:56:19,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 546 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 15:56:19,778 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 145 mSDsluCounter, 3565 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 64 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:56:19,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 3887 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 909 Invalid, 3 Unknown, 507 Unchecked, 10.0s Time] [2021-11-19 15:56:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-19 15:56:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 269. [2021-11-19 15:56:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 184 states have (on average 1.1793478260869565) internal successors, (217), 188 states have internal predecessors, (217), 66 states have call successors, (66), 15 states have call predecessors, (66), 18 states have return successors, (82), 65 states have call predecessors, (82), 65 states have call successors, (82) [2021-11-19 15:56:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 365 transitions. [2021-11-19 15:56:19,808 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 365 transitions. Word has length 151 [2021-11-19 15:56:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:56:19,809 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 365 transitions. [2021-11-19 15:56:19,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 22 states have internal predecessors, (136), 10 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 10 states have call successors, (39) [2021-11-19 15:56:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 365 transitions. [2021-11-19 15:56:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 15:56:19,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:56:19,813 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:56:19,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-19 15:56:20,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:56:20,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:56:20,222 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:56:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:56:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1942244417, now seen corresponding path program 1 times [2021-11-19 15:56:20,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:56:20,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716487245] [2021-11-19 15:56:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:56:20,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:56:20,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:56:20,226 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:56:20,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129c873-a057-400a-87e1-271cd394634e/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:56:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:56:21,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:56:21,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:56:22,373 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:56:22,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-19 15:56:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 137 proven. 8 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-19 15:56:22,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:56:24,127 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 15:56:24,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1 [2021-11-19 15:56:35,205 WARN L227 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:56:35,207 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 15:56:35,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771