./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_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_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/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_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/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_55321981-aaba-476e-b319-5870cccc8233/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:38,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:38,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:38,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:38,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:38,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:38,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:38,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:38,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:38,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:38,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:38,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:38,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:38,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:38,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:38,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:38,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:38,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:38,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:38,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:38,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:38,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:38,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:38,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:38,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:38,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:38,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:38,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:38,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:38,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:38,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:38,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:38,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:38,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:38,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:38,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:38,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:38,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:38,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:38,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:38,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:38,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:19:38,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:38,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:38,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:38,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:38,596 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:38,596 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:38,596 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:38,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:19:38,597 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:38,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:38,603 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:19:38,603 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:19:38,603 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:38,604 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:19:38,604 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:19:38,604 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:19:38,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:38,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:19:38,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:38,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:38,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:38,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:38,607 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:38,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:38,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:38,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:38,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:38,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:38,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:38,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:38,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:38,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:38,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:19:38,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:19:38,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:38,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:38,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:38,612 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_55321981-aaba-476e-b319-5870cccc8233/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-19 13:19:38,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:38,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:38,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:38,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:38,918 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:38,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-19 13:19:39,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/2d94d4b8d/5bfaee386c3646b98d5e05d2b87a8f09/FLAG8a820c7bb [2021-11-19 13:19:40,006 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:40,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-19 13:19:40,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/2d94d4b8d/5bfaee386c3646b98d5e05d2b87a8f09/FLAG8a820c7bb [2021-11-19 13:19:40,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/2d94d4b8d/5bfaee386c3646b98d5e05d2b87a8f09 [2021-11-19 13:19:40,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:40,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:40,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:40,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:40,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:40,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:40" (1/1) ... [2021-11-19 13:19:40,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273f99c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:40, skipping insertion in model container [2021-11-19 13:19:40,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:40" (1/1) ... [2021-11-19 13:19:40,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:40,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:40,909 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-19 13:19:40,919 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-19 13:19:40,956 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:19:40,966 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:19:42,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,124 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,125 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,127 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,134 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,161 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,162 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,169 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:42,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:19:42,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:19:42,739 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:19:42,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:19:42,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:19:42,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:19:42,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:19:42,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:19:42,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:19:42,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:19:42,981 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:19:43,178 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:43,180 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:43,275 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:43,328 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 13:19:43,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42f3e53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:43, skipping insertion in model container [2021-11-19 13:19:43,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:43,330 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:19:43,332 INFO L158 Benchmark]: Toolchain (without parser) took 2945.66ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 89.7MB in the beginning and 84.4MB in the end (delta: 5.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-11-19 13:19:43,333 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:19:43,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2941.45ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 89.4MB in the beginning and 84.4MB in the end (delta: 4.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-19 13:19:43,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2941.45ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 89.4MB in the beginning and 84.4MB in the end (delta: 4.9MB). Peak memory consumption was 41.9MB. 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_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/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_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/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_55321981-aaba-476e-b319-5870cccc8233/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:45,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:45,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:46,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:46,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:46,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:46,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:46,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:46,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:46,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:46,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:46,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:46,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:46,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:46,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:46,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:46,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:46,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:46,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:46,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:46,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:46,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:46,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:46,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:46,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:46,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:46,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:46,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:46,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:46,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:46,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:46,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:46,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:46,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:46,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:46,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:46,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:46,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:46,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:46,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:46,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:46,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:19:46,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:46,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:46,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:46,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:46,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:46,145 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:46,146 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:46,146 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:46,147 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:46,147 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:46,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:46,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:46,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:46,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:46,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:46,151 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:46,151 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:19:46,152 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:19:46,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:46,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:46,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:46,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:46,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:19:46,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:46,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:46,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:46,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:46,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:46,154 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:19:46,155 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:19:46,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:46,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:46,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:46,156 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_55321981-aaba-476e-b319-5870cccc8233/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-19 13:19:46,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:46,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:46,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:46,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:46,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:46,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-19 13:19:46,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/6ae5cba3b/5463c93a80d44514a54ab1df97af8605/FLAG710ee7251 [2021-11-19 13:19:47,844 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:47,851 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-19 13:19:47,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/6ae5cba3b/5463c93a80d44514a54ab1df97af8605/FLAG710ee7251 [2021-11-19 13:19:48,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/data/6ae5cba3b/5463c93a80d44514a54ab1df97af8605 [2021-11-19 13:19:48,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:48,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:48,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:48,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:48,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:48,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:48" (1/1) ... [2021-11-19 13:19:48,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417c38b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:48, skipping insertion in model container [2021-11-19 13:19:48,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:48" (1/1) ... [2021-11-19 13:19:48,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:48,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:48,610 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-19 13:19:48,618 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-19 13:19:48,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:19:48,655 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:19:49,823 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,825 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,827 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,828 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,830 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,853 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,854 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,856 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:49,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:50,334 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:19:50,337 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:19:50,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:19:50,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:19:50,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:19:50,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:19:50,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:19:50,344 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:19:50,345 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:19:50,346 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:19:50,564 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:19:50,742 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:50,743 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:50,829 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:50,914 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:19:51,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:51,028 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-19 13:19:51,029 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-19 13:19:51,031 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:19:51,033 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:19:51,132 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,135 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,135 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,136 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,137 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,163 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,164 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,169 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,209 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:19:51,210 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:19:51,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:19:51,212 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:19:51,213 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:19:51,214 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:19:51,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:19:51,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:19:51,216 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:19:51,217 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:19:51,243 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:19:51,312 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,313 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,376 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:51,450 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:19:51,481 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-19 13:19:51,481 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_55321981-aaba-476e-b319-5870cccc8233/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-19 13:19:51,483 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:19:51,484 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:19:51,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,537 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,537 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,538 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,538 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,590 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:19:51,590 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:19:51,591 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:19:51,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:19:51,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:19:51,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:19:51,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:19:51,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:19:51,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:19:51,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:19:51,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:19:51,736 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:19:51,782 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:52,358 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:19:52,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52 WrapperNode [2021-11-19 13:19:52,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:52,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:52,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:19:52,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:19:52,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,657 INFO L137 Inliner]: procedures = 713, calls = 2645, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 855 [2021-11-19 13:19:52,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:52,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:19:52,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:19:52,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:19:52,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:19:52,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:19:52,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:19:52,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:19:52,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (1/1) ... [2021-11-19 13:19:52,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:52,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:19:52,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:19:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 13:19:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 13:19:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-19 13:19:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-19 13:19:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:19:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:19:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:19:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:19:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:19:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:19:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2021-11-19 13:19:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2021-11-19 13:19:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:19:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:19:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:19:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:19:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:19:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:19:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:19:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 13:19:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 13:19:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:19:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:19:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:19:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:19:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:19:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:19:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:19:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 13:19:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:19:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:19:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:19:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-19 13:19:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-19 13:19:52,920 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:19:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:19:53,270 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:19:53,272 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:19:57,434 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:19:57,444 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:19:57,444 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:19:57,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:57 BoogieIcfgContainer [2021-11-19 13:19:57,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:19:57,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:19:57,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:19:57,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:19:57,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:19:48" (1/3) ... [2021-11-19 13:19:57,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc151c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:57, skipping insertion in model container [2021-11-19 13:19:57,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:52" (2/3) ... [2021-11-19 13:19:57,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc151c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:57, skipping insertion in model container [2021-11-19 13:19:57,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:57" (3/3) ... [2021-11-19 13:19:57,457 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-19 13:19:57,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:19:57,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:19:57,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:19:57,528 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 13:19:57,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:19:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-19 13:19:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 13:19:57,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:57,569 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:19:57,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1985085193, now seen corresponding path program 1 times [2021-11-19 13:19:57,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:57,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14858467] [2021-11-19 13:19:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:57,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:57,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:57,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:19:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:58,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:19:58,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 13:19:58,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 13:19:59,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:59,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14858467] [2021-11-19 13:19:59,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14858467] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:19:59,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:19:59,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:19:59,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780156872] [2021-11-19 13:19:59,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:59,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:19:59,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:19:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:19:59,266 INFO L87 Difference]: Start difference. First operand has 169 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:19:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:59,317 INFO L93 Difference]: Finished difference Result 334 states and 478 transitions. [2021-11-19 13:19:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:19:59,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2021-11-19 13:19:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:59,342 INFO L225 Difference]: With dead ends: 334 [2021-11-19 13:19:59,342 INFO L226 Difference]: Without dead ends: 164 [2021-11-19 13:19:59,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 13:19:59,367 INFO L933 BasicCegarLoop]: 222 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, 222 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 13:19:59,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-19 13:19:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-19 13:19:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-19 13:19:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2021-11-19 13:19:59,437 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 97 [2021-11-19 13:19:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:59,438 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2021-11-19 13:19:59,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:19:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2021-11-19 13:19:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 13:19:59,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:59,445 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:19:59,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:19:59,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:59,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 322966765, now seen corresponding path program 1 times [2021-11-19 13:19:59,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:59,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62050367] [2021-11-19 13:19:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:59,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:59,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:59,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:59,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:20:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:00,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:20:00,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:20:00,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 13:20:01,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:01,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62050367] [2021-11-19 13:20:01,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62050367] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:01,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:01,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:20:01,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158941632] [2021-11-19 13:20:01,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:01,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:01,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:01,351 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:01,711 INFO L93 Difference]: Finished difference Result 314 states and 419 transitions. [2021-11-19 13:20:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 97 [2021-11-19 13:20:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:01,721 INFO L225 Difference]: With dead ends: 314 [2021-11-19 13:20:01,721 INFO L226 Difference]: Without dead ends: 167 [2021-11-19 13:20:01,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 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 13:20:01,723 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 42 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:01,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 746 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:20:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-19 13:20:01,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-19 13:20:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-19 13:20:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 222 transitions. [2021-11-19 13:20:01,752 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 222 transitions. Word has length 97 [2021-11-19 13:20:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:01,753 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 222 transitions. [2021-11-19 13:20:01,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 222 transitions. [2021-11-19 13:20:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 13:20:01,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:01,758 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:01,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:01,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:01,971 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:01,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash -95193896, now seen corresponding path program 1 times [2021-11-19 13:20:01,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:01,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404627730] [2021-11-19 13:20:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:01,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:01,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:01,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:01,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:20:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:02,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:20:02,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:03,293 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 13:20:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:20:04,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:05,677 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 13:20:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 13:20:06,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:06,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404627730] [2021-11-19 13:20:06,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404627730] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:06,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:06,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-19 13:20:06,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673828944] [2021-11-19 13:20:06,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:06,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:20:06,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:20:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:20:06,035 INFO L87 Difference]: Start difference. First operand 167 states and 222 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-19 13:20:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:06,427 INFO L93 Difference]: Finished difference Result 337 states and 446 transitions. [2021-11-19 13:20:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:20:06,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 103 [2021-11-19 13:20:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:06,440 INFO L225 Difference]: With dead ends: 337 [2021-11-19 13:20:06,440 INFO L226 Difference]: Without dead ends: 180 [2021-11-19 13:20:06,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:20:06,443 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 34 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:06,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1192 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2021-11-19 13:20:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-19 13:20:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-19 13:20:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 118 states have internal predecessors, (139), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2021-11-19 13:20:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 238 transitions. [2021-11-19 13:20:06,470 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 238 transitions. Word has length 103 [2021-11-19 13:20:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:06,471 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 238 transitions. [2021-11-19 13:20:06,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-19 13:20:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 238 transitions. [2021-11-19 13:20:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 13:20:06,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:06,475 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:06,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:06,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:06,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1062544550, now seen corresponding path program 1 times [2021-11-19 13:20:06,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:06,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842803311] [2021-11-19 13:20:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:06,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:06,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:06,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:20:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:07,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:20:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 13:20:08,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 13:20:08,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:08,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842803311] [2021-11-19 13:20:08,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842803311] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:08,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:08,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 13:20:08,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000176043] [2021-11-19 13:20:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:08,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:20:08,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:20:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:20:08,449 INFO L87 Difference]: Start difference. First operand 180 states and 238 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:20:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:08,524 INFO L93 Difference]: Finished difference Result 340 states and 457 transitions. [2021-11-19 13:20:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-11-19 13:20:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:08,532 INFO L225 Difference]: With dead ends: 340 [2021-11-19 13:20:08,532 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 13:20:08,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 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 13:20:08,539 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 20 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 643 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 13:20:08,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 643 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:20:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 13:20:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 174. [2021-11-19 13:20:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 112 states have internal predecessors, (133), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-19 13:20:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2021-11-19 13:20:08,588 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 103 [2021-11-19 13:20:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:08,589 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2021-11-19 13:20:08,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:20:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2021-11-19 13:20:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 13:20:08,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:08,597 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:08,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:08,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:08,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:08,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -238708128, now seen corresponding path program 1 times [2021-11-19 13:20:08,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:08,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198594531] [2021-11-19 13:20:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:08,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:08,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:08,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:08,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:20:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:09,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:20:09,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 13:20:10,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 13:20:11,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:11,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198594531] [2021-11-19 13:20:11,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198594531] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:11,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:11,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-19 13:20:11,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607396166] [2021-11-19 13:20:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:11,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:11,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:11,518 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:20:13,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:20:15,701 WARN L515 Checker$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 13:20:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:17,339 INFO L93 Difference]: Finished difference Result 346 states and 469 transitions. [2021-11-19 13:20:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:17,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2021-11-19 13:20:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:17,346 INFO L225 Difference]: With dead ends: 346 [2021-11-19 13:20:17,346 INFO L226 Difference]: Without dead ends: 194 [2021-11-19 13:20:17,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:20:17,349 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 42 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:17,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 770 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 2 Unknown, 43 Unchecked, 5.6s Time] [2021-11-19 13:20:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-19 13:20:17,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2021-11-19 13:20:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 121 states have internal predecessors, (145), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-19 13:20:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 243 transitions. [2021-11-19 13:20:17,369 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 243 transitions. Word has length 107 [2021-11-19 13:20:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:17,370 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 243 transitions. [2021-11-19 13:20:17,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:20:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 243 transitions. [2021-11-19 13:20:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 13:20:17,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:17,373 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:17,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:17,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:17,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:17,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -161807330, now seen corresponding path program 1 times [2021-11-19 13:20:17,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:17,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283858147] [2021-11-19 13:20:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:17,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:17,603 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:17,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:20:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:18,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:20:18,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 13:20:21,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 13:20:23,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:23,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283858147] [2021-11-19 13:20:23,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283858147] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:23,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:23,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-19 13:20:23,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304165698] [2021-11-19 13:20:23,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:23,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:20:23,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:20:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:20:23,312 INFO L87 Difference]: Start difference. First operand 183 states and 243 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:25,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:20:27,445 WARN L515 Checker$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 13:20:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:31,615 INFO L93 Difference]: Finished difference Result 354 states and 481 transitions. [2021-11-19 13:20:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:20:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 107 [2021-11-19 13:20:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:31,623 INFO L225 Difference]: With dead ends: 354 [2021-11-19 13:20:31,624 INFO L226 Difference]: Without dead ends: 192 [2021-11-19 13:20:31,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:20:31,627 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 38 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:31,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2004 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 2 Unknown, 315 Unchecked, 6.4s Time] [2021-11-19 13:20:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-19 13:20:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2021-11-19 13:20:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 124 states have (on average 1.185483870967742) internal successors, (147), 126 states have internal predecessors, (147), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-19 13:20:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2021-11-19 13:20:31,647 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 107 [2021-11-19 13:20:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:31,648 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2021-11-19 13:20:31,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2021-11-19 13:20:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 13:20:31,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:31,651 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:31,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:31,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:31,867 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:31,867 INFO L85 PathProgramCache]: Analyzing trace with hash -211642526, now seen corresponding path program 1 times [2021-11-19 13:20:31,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:31,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532603258] [2021-11-19 13:20:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:31,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:31,870 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:31,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:20:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:32,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:20:32,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 13:20:33,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 13:20:33,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:33,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532603258] [2021-11-19 13:20:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532603258] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:33,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:33,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 13:20:33,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144456159] [2021-11-19 13:20:33,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:33,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:20:33,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:20:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:20:33,475 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:20:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:33,556 INFO L93 Difference]: Finished difference Result 358 states and 479 transitions. [2021-11-19 13:20:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2021-11-19 13:20:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:33,560 INFO L225 Difference]: With dead ends: 358 [2021-11-19 13:20:33,560 INFO L226 Difference]: Without dead ends: 192 [2021-11-19 13:20:33,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 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 13:20:33,563 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 34 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:33,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 634 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:20:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-19 13:20:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2021-11-19 13:20:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 122 states have internal predecessors, (140), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-19 13:20:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2021-11-19 13:20:33,581 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 107 [2021-11-19 13:20:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:33,582 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2021-11-19 13:20:33,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:20:33,582 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2021-11-19 13:20:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 13:20:33,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:33,585 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:33,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:33,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:33,799 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1522461924, now seen corresponding path program 1 times [2021-11-19 13:20:33,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:33,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218637803] [2021-11-19 13:20:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:33,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:33,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:33,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:33,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:20:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:34,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:20:34,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 13:20:35,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-19 13:20:35,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:35,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218637803] [2021-11-19 13:20:35,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218637803] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:35,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:35,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 13:20:35,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164981072] [2021-11-19 13:20:35,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:35,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:20:35,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:35,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:20:35,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:35,609 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:36,062 INFO L93 Difference]: Finished difference Result 357 states and 475 transitions. [2021-11-19 13:20:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:20:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 107 [2021-11-19 13:20:36,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:36,067 INFO L225 Difference]: With dead ends: 357 [2021-11-19 13:20:36,067 INFO L226 Difference]: Without dead ends: 193 [2021-11-19 13:20:36,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:20:36,070 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 12 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:36,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1579 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:20:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-19 13:20:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 184. [2021-11-19 13:20:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 122 states have internal predecessors, (140), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-19 13:20:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2021-11-19 13:20:36,089 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 107 [2021-11-19 13:20:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:36,089 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2021-11-19 13:20:36,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:36,090 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2021-11-19 13:20:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 13:20:36,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:36,092 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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 13:20:36,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:36,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:36,315 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash 607735945, now seen corresponding path program 1 times [2021-11-19 13:20:36,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:36,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488916813] [2021-11-19 13:20:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:36,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:36,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:36,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:36,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:20:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:37,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:20:37,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 13:20:37,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 13:20:38,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:38,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488916813] [2021-11-19 13:20:38,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488916813] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:38,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:38,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:20:38,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619842101] [2021-11-19 13:20:38,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:38,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:38,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:38,250 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:38,459 INFO L93 Difference]: Finished difference Result 331 states and 441 transitions. [2021-11-19 13:20:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:38,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2021-11-19 13:20:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:38,465 INFO L225 Difference]: With dead ends: 331 [2021-11-19 13:20:38,465 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 13:20:38,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 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 13:20:38,467 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 28 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:38,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 582 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:20:38,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 13:20:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-19 13:20:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 125 states have internal predecessors, (142), 48 states have call successors, (48), 14 states have call predecessors, (48), 16 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-11-19 13:20:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 247 transitions. [2021-11-19 13:20:38,484 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 247 transitions. Word has length 109 [2021-11-19 13:20:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:38,485 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 247 transitions. [2021-11-19 13:20:38,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:20:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 247 transitions. [2021-11-19 13:20:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:20:38,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:38,488 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-19 13:20:38,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:38,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:38,703 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1220707282, now seen corresponding path program 1 times [2021-11-19 13:20:38,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:38,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93658359] [2021-11-19 13:20:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:38,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:38,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:38,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:38,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:20:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:20:40,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 13:20:40,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 13:20:40,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:40,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93658359] [2021-11-19 13:20:40,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93658359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:40,967 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:40,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 13:20:40,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561712710] [2021-11-19 13:20:40,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:40,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:20:40,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:20:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:40,970 INFO L87 Difference]: Start difference. First operand 187 states and 247 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 13:20:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:41,601 INFO L93 Difference]: Finished difference Result 329 states and 435 transitions. [2021-11-19 13:20:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:20:41,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 111 [2021-11-19 13:20:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:41,608 INFO L225 Difference]: With dead ends: 329 [2021-11-19 13:20:41,608 INFO L226 Difference]: Without dead ends: 184 [2021-11-19 13:20:41,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:20:41,610 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 66 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:41,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1092 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:20:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-19 13:20:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-19 13:20:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.1583333333333334) internal successors, (139), 122 states have internal predecessors, (139), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-11-19 13:20:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 241 transitions. [2021-11-19 13:20:41,626 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 241 transitions. Word has length 111 [2021-11-19 13:20:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:41,627 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 241 transitions. [2021-11-19 13:20:41,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 13:20:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 241 transitions. [2021-11-19 13:20:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:20:41,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:41,630 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:41,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:41,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:41,840 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -39406311, now seen corresponding path program 1 times [2021-11-19 13:20:41,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:41,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707887680] [2021-11-19 13:20:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:41,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:41,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:41,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:41,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:20:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:43,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:20:43,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 13:20:43,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-19 13:20:43,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:43,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707887680] [2021-11-19 13:20:43,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707887680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:43,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:43,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 13:20:43,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869186774] [2021-11-19 13:20:43,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:43,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:20:43,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:20:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:43,953 INFO L87 Difference]: Start difference. First operand 184 states and 241 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 13:20:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:44,541 INFO L93 Difference]: Finished difference Result 320 states and 418 transitions. [2021-11-19 13:20:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:20:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 117 [2021-11-19 13:20:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:44,547 INFO L225 Difference]: With dead ends: 320 [2021-11-19 13:20:44,547 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 13:20:44,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:20:44,549 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 57 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:44,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1104 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:20:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 13:20:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 13:20:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.152542372881356) internal successors, (136), 119 states have internal predecessors, (136), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2021-11-19 13:20:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 235 transitions. [2021-11-19 13:20:44,564 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 235 transitions. Word has length 117 [2021-11-19 13:20:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:44,565 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 235 transitions. [2021-11-19 13:20:44,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 13:20:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 235 transitions. [2021-11-19 13:20:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:20:44,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:44,568 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:44,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:44,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:44,783 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:20:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1429562114, now seen corresponding path program 1 times [2021-11-19 13:20:44,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:44,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715024535] [2021-11-19 13:20:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:44,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:44,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:44,786 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:44,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55321981-aaba-476e-b319-5870cccc8233/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:20:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:46,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:20:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:48,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:20:48,818 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 13:20:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 13:20:48,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:50,395 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-19 13:20:50,396 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 13:21:01,033 WARN L227 SmtUtils]: Spent 10.22s 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 13:21:01,040 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-19 13:21:01,041 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