./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_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_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/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_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/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_ed93e17d-06fa-4298-88d9-2db9c959cbde/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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:05:56,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:05:56,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:05:56,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:05:56,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:05:56,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:05:56,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:05:56,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:05:56,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:05:56,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:05:56,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:05:56,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:05:56,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:05:56,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:05:56,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:05:56,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:05:56,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:05:56,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:05:56,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:05:56,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:05:56,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:05:56,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:05:56,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:05:56,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:05:56,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:05:56,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:05:56,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:05:56,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:05:56,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:05:56,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:05:56,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:05:56,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:05:56,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:05:56,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:05:56,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:05:56,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:05:56,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:05:56,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:05:56,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:05:56,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:05:56,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:05:56,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:05:56,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:05:56,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:05:56,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:05:56,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:05:56,386 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:05:56,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:05:56,386 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:05:56,386 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:05:56,387 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:05:56,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:05:56,388 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:05:56,388 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:05:56,388 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:05:56,389 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:05:56,389 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:05:56,389 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:05:56,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:05:56,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:05:56,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:05:56,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:05:56,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:05:56,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:05:56,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:05:56,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:05:56,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:05:56,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:05:56,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:05:56,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:05:56,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:05:56,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:05:56,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:05:56,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:05:56,394 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:05:56,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:05:56,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:05:56,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:05:56,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:05:56,395 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-11-19 15:05:56,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:05:56,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:05:56,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:05:56,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:05:56,766 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:05:56,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-19 15:05:56,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/2a6c600ad/3a052edf45c34c2691b3dff6ef7cd6bb/FLAGe907e783b [2021-11-19 15:05:57,672 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:05:57,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-19 15:05:57,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/2a6c600ad/3a052edf45c34c2691b3dff6ef7cd6bb/FLAGe907e783b [2021-11-19 15:05:58,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/2a6c600ad/3a052edf45c34c2691b3dff6ef7cd6bb [2021-11-19 15:05:58,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:05:58,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:05:58,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:05:58,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:05:58,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:05:58,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:05:58" (1/1) ... [2021-11-19 15:05:58,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f641380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:05:58, skipping insertion in model container [2021-11-19 15:05:58,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:05:58" (1/1) ... [2021-11-19 15:05:58,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:05:58,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:05:58,615 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-19 15:05:58,622 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-19 15:05:58,647 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:05:58,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:05:59,494 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:05:59,573 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,573 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,574 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,575 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,576 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,590 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,591 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,593 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,594 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,596 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,597 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,598 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,599 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:05:59,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:05:59,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:05:59,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:05:59,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:05:59,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:05:59,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:05:59,990 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:05:59,990 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:05:59,991 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:05:59,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:06:00,223 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:00,238 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:00,294 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:06:00,331 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:06:00,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c2505e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:00, skipping insertion in model container [2021-11-19 15:06:00,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:06:00,332 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:06:00,334 INFO L158 Benchmark]: Toolchain (without parser) took 2144.05ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 79.1MB in the end (delta: -3.2MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-11-19 15:06:00,335 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:06:00,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2140.21ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 79.1MB in the end (delta: -3.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-11-19 15:06:00,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 63.2MB in the beginning and 63.2MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2140.21ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 79.1MB in the end (delta: -3.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/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_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/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_ed93e17d-06fa-4298-88d9-2db9c959cbde/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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:06:02,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:06:02,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:06:02,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:06:02,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:06:02,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:06:02,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:06:02,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:06:02,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:06:02,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:06:02,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:06:02,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:06:02,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:06:02,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:06:02,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:06:02,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:06:02,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:06:02,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:06:02,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:06:02,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:06:02,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:06:02,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:06:02,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:06:02,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:06:02,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:06:02,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:06:02,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:06:02,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:06:02,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:06:02,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:06:02,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:06:02,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:06:02,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:06:02,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:06:02,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:06:02,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:06:02,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:06:02,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:06:02,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:06:02,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:06:02,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:06:02,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:06:02,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:06:02,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:06:02,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:06:02,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:06:02,912 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:06:02,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:06:02,913 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:06:02,913 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:06:02,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:06:02,913 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:06:02,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:06:02,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:06:02,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:06:02,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:06:02,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:06:02,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:06:02,916 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:06:02,916 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:06:02,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:06:02,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:06:02,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:06:02,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:06:02,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:06:02,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:06:02,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:06:02,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:06:02,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:06:02,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:06:02,919 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:06:02,919 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:02,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:06:02,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:06:02,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:06:02,920 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-11-19 15:06:03,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:06:03,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:06:03,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:06:03,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:06:03,353 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:06:03,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-19 15:06:03,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/431d4f814/b5c51d76098a43a382c82518584b9d56/FLAGacf92e627 [2021-11-19 15:06:04,494 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:06:04,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-19 15:06:04,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/431d4f814/b5c51d76098a43a382c82518584b9d56/FLAGacf92e627 [2021-11-19 15:06:04,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/data/431d4f814/b5c51d76098a43a382c82518584b9d56 [2021-11-19 15:06:04,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:06:04,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:06:04,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:06:04,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:06:04,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:06:04,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:06:04" (1/1) ... [2021-11-19 15:06:04,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea1486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:04, skipping insertion in model container [2021-11-19 15:06:04,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:06:04" (1/1) ... [2021-11-19 15:06:04,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:06:05,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:06:05,335 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-19 15:06:05,344 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-19 15:06:05,376 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:06:05,384 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:06:06,329 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:06:06,407 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,407 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,408 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,409 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,410 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,425 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,426 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,428 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,429 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,430 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,432 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:06,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:06:06,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:06:06,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:06:06,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:06:06,891 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:06:06,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:06:06,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:06:06,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:06:06,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:06:06,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:06:07,071 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,079 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,176 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:06:07,236 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:06:07,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:06:07,353 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-19 15:06:07,353 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-19 15:06:07,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:06:07,364 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:06:07,402 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:06:07,446 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,451 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,452 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,452 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,453 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,467 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,468 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,469 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,470 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,479 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,482 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,482 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,483 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:06:07,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:06:07,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:06:07,564 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:06:07,565 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:06:07,566 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:06:07,569 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:06:07,570 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:06:07,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:06:07,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:06:07,631 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,637 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,678 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:06:07,704 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:06:07,745 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-19 15:06:07,751 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_ed93e17d-06fa-4298-88d9-2db9c959cbde/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-19 15:06:07,753 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:06:07,754 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:06:07,792 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:06:07,811 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,812 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,812 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,812 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,813 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,819 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,821 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,822 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,822 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,823 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,824 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,825 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,825 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:06:07,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:06:07,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:06:07,891 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:06:07,892 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:06:07,893 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:06:07,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:06:07,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:06:07,895 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:06:07,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:06:07,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,951 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:06:07,972 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:06:08,314 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:06:08,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08 WrapperNode [2021-11-19 15:06:08,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:06:08,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:06:08,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:06:08,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:06:08,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,510 INFO L137 Inliner]: procedures = 713, calls = 1683, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 878 [2021-11-19 15:06:08,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:06:08,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:06:08,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:06:08,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:06:08,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:06:08,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:06:08,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:06:08,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:06:08,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (1/1) ... [2021-11-19 15:06:08,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:06:08,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:06:08,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:06:08,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:06:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:06:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-19 15:06:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-19 15:06:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-19 15:06:08,704 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-19 15:06:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:06:08,704 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:06:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:06:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:06:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:06:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 15:06:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 15:06:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 15:06:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 15:06:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:06:08,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:06:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:06:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:06:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:06:08,706 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 15:06:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 15:06:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:06:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:06:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:06:08,708 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:06:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:06:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-19 15:06:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-19 15:06:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:06:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 15:06:08,712 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 15:06:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 15:06:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 15:06:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 15:06:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 15:06:08,721 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 15:06:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-19 15:06:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-19 15:06:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:06:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:06:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 15:06:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 15:06:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-19 15:06:08,723 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-19 15:06:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:06:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 15:06:08,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 15:06:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 15:06:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:06:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:06:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 15:06:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:06:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 15:06:08,724 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 15:06:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 15:06:08,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 15:06:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 15:06:08,725 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 15:06:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-19 15:06:08,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-19 15:06:09,188 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:06:09,190 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:06:13,635 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:06:13,657 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:06:13,657 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:06:13,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:06:13 BoogieIcfgContainer [2021-11-19 15:06:13,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:06:13,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:06:13,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:06:13,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:06:13,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:06:04" (1/3) ... [2021-11-19 15:06:13,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242c7a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:06:13, skipping insertion in model container [2021-11-19 15:06:13,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:06:08" (2/3) ... [2021-11-19 15:06:13,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242c7a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:06:13, skipping insertion in model container [2021-11-19 15:06:13,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:06:13" (3/3) ... [2021-11-19 15:06:13,671 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-11-19 15:06:13,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:06:13,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:06:13,752 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:06:13,764 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:06:13,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:06:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 172 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-19 15:06:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-19 15:06:13,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:13,822 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:13,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash -769699633, now seen corresponding path program 1 times [2021-11-19 15:06:13,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:13,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479572120] [2021-11-19 15:06:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:13,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:13,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:13,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:13,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:06:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:06:14,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-19 15:06:15,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-19 15:06:15,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:15,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479572120] [2021-11-19 15:06:15,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479572120] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:06:15,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:06:15,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 15:06:15,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399131727] [2021-11-19 15:06:15,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:15,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:06:15,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:06:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:06:15,450 INFO L87 Difference]: Start difference. First operand has 295 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 172 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 15:06:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:15,566 INFO L93 Difference]: Finished difference Result 583 states and 876 transitions. [2021-11-19 15:06:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:06:15,569 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 130 [2021-11-19 15:06:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:15,594 INFO L225 Difference]: With dead ends: 583 [2021-11-19 15:06:15,594 INFO L226 Difference]: Without dead ends: 290 [2021-11-19 15:06:15,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:06:15,611 INFO L933 BasicCegarLoop]: 410 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, 410 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:15,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:06:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-19 15:06:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-19 15:06:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 167 states have (on average 1.221556886227545) internal successors, (204), 168 states have internal predecessors, (204), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-19 15:06:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 405 transitions. [2021-11-19 15:06:15,723 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 405 transitions. Word has length 130 [2021-11-19 15:06:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:15,723 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 405 transitions. [2021-11-19 15:06:15,724 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 15:06:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 405 transitions. [2021-11-19 15:06:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-19 15:06:15,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:15,728 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:15,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:15,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:15,953 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1434401349, now seen corresponding path program 1 times [2021-11-19 15:06:15,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:15,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110462415] [2021-11-19 15:06:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:15,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:15,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:15,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:15,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:06:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:16,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:06:16,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 15:06:17,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-19 15:06:17,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:17,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110462415] [2021-11-19 15:06:17,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110462415] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:06:17,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:06:17,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 15:06:17,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141815776] [2021-11-19 15:06:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:17,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:06:17,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:17,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:06:17,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:06:17,649 INFO L87 Difference]: Start difference. First operand 290 states and 405 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 15:06:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:18,357 INFO L93 Difference]: Finished difference Result 556 states and 797 transitions. [2021-11-19 15:06:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:06:18,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2021-11-19 15:06:18,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:18,364 INFO L225 Difference]: With dead ends: 556 [2021-11-19 15:06:18,364 INFO L226 Difference]: Without dead ends: 292 [2021-11-19 15:06:18,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:06:18,366 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 111 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:18,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 1281 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 15:06:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-19 15:06:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-11-19 15:06:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 168 states have (on average 1.2202380952380953) internal successors, (205), 170 states have internal predecessors, (205), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-11-19 15:06:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 425 transitions. [2021-11-19 15:06:18,418 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 425 transitions. Word has length 130 [2021-11-19 15:06:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:18,420 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 425 transitions. [2021-11-19 15:06:18,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 15:06:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 425 transitions. [2021-11-19 15:06:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-19 15:06:18,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:18,430 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:18,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:18,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:18,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1767752939, now seen corresponding path program 1 times [2021-11-19 15:06:18,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:18,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640426757] [2021-11-19 15:06:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:18,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:18,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:18,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:18,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:06:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:19,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:06:19,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-19 15:06:20,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-19 15:06:20,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:20,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640426757] [2021-11-19 15:06:20,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640426757] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:06:20,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:06:20,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 15:06:20,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353042786] [2021-11-19 15:06:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:20,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:06:20,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:06:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:06:20,451 INFO L87 Difference]: Start difference. First operand 292 states and 425 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 15:06:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:20,574 INFO L93 Difference]: Finished difference Result 563 states and 845 transitions. [2021-11-19 15:06:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:06:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 160 [2021-11-19 15:06:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:20,580 INFO L225 Difference]: With dead ends: 563 [2021-11-19 15:06:20,580 INFO L226 Difference]: Without dead ends: 297 [2021-11-19 15:06:20,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:06:20,583 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 10 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1202 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 15:06:20,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1202 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:06:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-19 15:06:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 294. [2021-11-19 15:06:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 172 states have internal predecessors, (207), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-11-19 15:06:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 427 transitions. [2021-11-19 15:06:20,621 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 427 transitions. Word has length 160 [2021-11-19 15:06:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:20,622 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 427 transitions. [2021-11-19 15:06:20,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 15:06:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 427 transitions. [2021-11-19 15:06:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-19 15:06:20,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:20,625 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:20,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:20,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:20,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 686217173, now seen corresponding path program 1 times [2021-11-19 15:06:20,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:20,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899696009] [2021-11-19 15:06:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:20,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:20,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:20,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:20,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:06:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:21,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:06:21,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:22,870 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 29 treesize of output 21 [2021-11-19 15:06:22,880 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 18 treesize of output 10 [2021-11-19 15:06:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 157 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:06:23,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:26,580 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:06:26,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:06:26,658 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:06:26,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:06:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-19 15:06:26,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:26,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899696009] [2021-11-19 15:06:26,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899696009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:26,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1963373438] [2021-11-19 15:06:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:26,834 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:26,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:26,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 15:06:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:27,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:06:27,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-19 15:06:28,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-19 15:06:28,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1963373438] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:06:28,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:06:28,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 10, 5] total 17 [2021-11-19 15:06:28,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214608111] [2021-11-19 15:06:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:28,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:06:28,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:06:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:06:28,420 INFO L87 Difference]: Start difference. First operand 294 states and 427 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:06:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:28,834 INFO L93 Difference]: Finished difference Result 545 states and 792 transitions. [2021-11-19 15:06:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:06:28,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 160 [2021-11-19 15:06:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:28,839 INFO L225 Difference]: With dead ends: 545 [2021-11-19 15:06:28,839 INFO L226 Difference]: Without dead ends: 294 [2021-11-19 15:06:28,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 620 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:06:28,847 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 2 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:28,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1457 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 15:06:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-19 15:06:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-19 15:06:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 170 states have (on average 1.2117647058823529) internal successors, (206), 172 states have internal predecessors, (206), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-11-19 15:06:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2021-11-19 15:06:28,900 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 160 [2021-11-19 15:06:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:28,901 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2021-11-19 15:06:28,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:06:28,902 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2021-11-19 15:06:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-19 15:06:28,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:28,905 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:28,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:29,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-19 15:06:29,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:29,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:29,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash -189801833, now seen corresponding path program 1 times [2021-11-19 15:06:29,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:29,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846171964] [2021-11-19 15:06:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:29,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:29,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:29,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:06:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:30,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:06:30,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:31,202 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 29 treesize of output 21 [2021-11-19 15:06:31,208 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 18 treesize of output 10 [2021-11-19 15:06:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 157 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-19 15:06:31,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:34,605 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:06:34,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:06:34,641 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:06:34,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:06:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-19 15:06:34,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:34,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846171964] [2021-11-19 15:06:34,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846171964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:34,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1428377304] [2021-11-19 15:06:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:06:34,799 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:34,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:34,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 15:06:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:35,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:06:35,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 15:06:36,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-19 15:06:36,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1428377304] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:06:36,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:06:36,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 10, 6] total 21 [2021-11-19 15:06:36,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46212056] [2021-11-19 15:06:36,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:06:36,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:06:36,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:06:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:06:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:06:36,719 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:06:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:06:37,775 INFO L93 Difference]: Finished difference Result 542 states and 785 transitions. [2021-11-19 15:06:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:06:37,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 160 [2021-11-19 15:06:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:06:37,780 INFO L225 Difference]: With dead ends: 542 [2021-11-19 15:06:37,780 INFO L226 Difference]: Without dead ends: 294 [2021-11-19 15:06:37,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 617 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:06:37,782 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 186 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:06:37,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1516 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:06:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-19 15:06:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-19 15:06:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 170 states have (on average 1.2117647058823529) internal successors, (206), 172 states have internal predecessors, (206), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2021-11-19 15:06:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 423 transitions. [2021-11-19 15:06:37,812 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 423 transitions. Word has length 160 [2021-11-19 15:06:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:06:37,813 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 423 transitions. [2021-11-19 15:06:37,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:06:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 423 transitions. [2021-11-19 15:06:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-19 15:06:37,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:06:37,818 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:06:37,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:38,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:06:38,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:06:38,224 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:06:38,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:06:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1309413730, now seen corresponding path program 2 times [2021-11-19 15:06:38,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:06:38,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849313321] [2021-11-19 15:06:38,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:06:38,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:06:38,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:06:38,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:06:38,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:06:43,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:06:43,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:06:43,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:06:43,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:43,973 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 29 treesize of output 21 [2021-11-19 15:06:43,976 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 18 treesize of output 10 [2021-11-19 15:06:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 172 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-19 15:06:44,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:06:47,385 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:06:47,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:06:47,412 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:06:47,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:06:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-19 15:06:47,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:06:47,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849313321] [2021-11-19 15:06:47,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849313321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:06:47,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1540988442] [2021-11-19 15:06:47,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:06:47,554 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:06:47,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:06:47,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:06:47,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:07:22,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:07:22,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:07:22,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:07:22,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 15:07:23,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 15:07:23,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1540988442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:07:23,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:07:23,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [12, 10] total 23 [2021-11-19 15:07:23,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535229755] [2021-11-19 15:07:23,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:07:23,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:07:23,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:07:23,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:07:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-11-19 15:07:23,779 INFO L87 Difference]: Start difference. First operand 294 states and 423 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:07:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:07:25,299 INFO L93 Difference]: Finished difference Result 548 states and 790 transitions. [2021-11-19 15:07:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:07:25,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 175 [2021-11-19 15:07:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:07:25,303 INFO L225 Difference]: With dead ends: 548 [2021-11-19 15:07:25,304 INFO L226 Difference]: Without dead ends: 306 [2021-11-19 15:07:25,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:07:25,306 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 193 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:07:25,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 2569 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 15:07:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-19 15:07:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-11-19 15:07:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 178 states have internal predecessors, (213), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2021-11-19 15:07:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 440 transitions. [2021-11-19 15:07:25,335 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 440 transitions. Word has length 175 [2021-11-19 15:07:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:07:25,338 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 440 transitions. [2021-11-19 15:07:25,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:07:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 440 transitions. [2021-11-19 15:07:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-19 15:07:25,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:07:25,343 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:07:25,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:25,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 15:07:25,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:07:25,762 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:07:25,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:07:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1082683166, now seen corresponding path program 1 times [2021-11-19 15:07:25,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:07:25,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320675647] [2021-11-19 15:07:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:25,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:07:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:07:25,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:07:25,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:07:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:26,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:07:26,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:27,715 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 29 treesize of output 21 [2021-11-19 15:07:27,719 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 18 treesize of output 10 [2021-11-19 15:07:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 15:07:28,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:31,493 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:07:31,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:07:31,516 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:07:31,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:07:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-19 15:07:31,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:07:31,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320675647] [2021-11-19 15:07:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320675647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:31,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905367838] [2021-11-19 15:07:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:31,657 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:07:31,659 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:07:31,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:07:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:40,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:07:40,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-19 15:07:41,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-11-19 15:07:41,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905367838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:07:41,995 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:07:41,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [12, 10] total 21 [2021-11-19 15:07:41,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924914556] [2021-11-19 15:07:41,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:07:41,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:07:41,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:07:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:07:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-11-19 15:07:41,997 INFO L87 Difference]: Start difference. First operand 306 states and 440 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 15:07:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:07:42,241 INFO L93 Difference]: Finished difference Result 582 states and 837 transitions. [2021-11-19 15:07:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:07:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 205 [2021-11-19 15:07:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:07:42,245 INFO L225 Difference]: With dead ends: 582 [2021-11-19 15:07:42,245 INFO L226 Difference]: Without dead ends: 309 [2021-11-19 15:07:42,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 796 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:07:42,248 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 4 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:07:42,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2412 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:07:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-19 15:07:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-19 15:07:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 178 states have (on average 1.2078651685393258) internal successors, (215), 181 states have internal predecessors, (215), 106 states have call successors, (106), 22 states have call predecessors, (106), 24 states have return successors, (122), 105 states have call predecessors, (122), 105 states have call successors, (122) [2021-11-19 15:07:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2021-11-19 15:07:42,270 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2021-11-19 15:07:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:07:42,271 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2021-11-19 15:07:42,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 15:07:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2021-11-19 15:07:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-19 15:07:42,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:07:42,274 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:07:42,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:42,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:07:42,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:07:42,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:07:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:07:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1876169761, now seen corresponding path program 1 times [2021-11-19 15:07:42,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:07:42,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022077222] [2021-11-19 15:07:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:42,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:07:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:07:42,690 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:07:42,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:07:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:43,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:07:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:44,548 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 29 treesize of output 21 [2021-11-19 15:07:44,552 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 18 treesize of output 10 [2021-11-19 15:07:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 15:07:44,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:07:47,976 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:07:47,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:07:48,000 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:07:48,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:07:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 15:07:48,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:07:48,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022077222] [2021-11-19 15:07:48,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022077222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:07:48,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [711012743] [2021-11-19 15:07:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:07:48,118 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:07:48,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:07:48,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:07:48,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:07:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:07:57,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 15:07:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:07:57,768 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 29 treesize of output 21 [2021-11-19 15:07:57,771 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 18 treesize of output 10 [2021-11-19 15:07:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 15:07:58,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:00,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:08:00,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:08:00,923 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:08:00,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:08:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 15:08:01,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [711012743] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:08:01,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638468007] [2021-11-19 15:08:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:01,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:08:01,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:08:01,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:08:01,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 15:08:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:02,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:08:02,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:02,990 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 19 treesize of output 7 [2021-11-19 15:08:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 220 proven. 4 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-19 15:08:03,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:06,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:08:06,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 15:08:06,788 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 15:08:06,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 15:08:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 15:08:06,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638468007] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:08:06,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:08:06,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12, 10, 13, 10] total 20 [2021-11-19 15:08:06,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257337623] [2021-11-19 15:08:06,933 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:08:06,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 15:08:06,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 15:08:06,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:08:06,936 INFO L87 Difference]: Start difference. First operand 309 states and 443 transitions. Second operand has 20 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 8 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 6 states have call predecessors, (49), 8 states have call successors, (49) [2021-11-19 15:08:09,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:08:11,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:08:13,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:08:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:18,872 INFO L93 Difference]: Finished difference Result 613 states and 897 transitions. [2021-11-19 15:08:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 15:08:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 8 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 6 states have call predecessors, (49), 8 states have call successors, (49) Word has length 216 [2021-11-19 15:08:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:18,876 INFO L225 Difference]: With dead ends: 613 [2021-11-19 15:08:18,877 INFO L226 Difference]: Without dead ends: 322 [2021-11-19 15:08:18,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1303 GetRequests, 1270 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-11-19 15:08:18,879 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 145 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:18,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 4167 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1029 Invalid, 3 Unknown, 519 Unchecked, 10.8s Time] [2021-11-19 15:08:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-19 15:08:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 312. [2021-11-19 15:08:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 180 states have (on average 1.2055555555555555) internal successors, (217), 184 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2021-11-19 15:08:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 468 transitions. [2021-11-19 15:08:18,904 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 468 transitions. Word has length 216 [2021-11-19 15:08:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:18,905 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 468 transitions. [2021-11-19 15:08:18,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 8 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 6 states have call predecessors, (49), 8 states have call successors, (49) [2021-11-19 15:08:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 468 transitions. [2021-11-19 15:08:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 15:08:18,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:18,909 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:08:18,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:19,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:19,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-19 15:08:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:08:19,523 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2076793943, now seen corresponding path program 1 times [2021-11-19 15:08:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:19,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357950998] [2021-11-19 15:08:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:19,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:19,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:19,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:08:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:20,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:08:20,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-19 15:08:21,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-19 15:08:22,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:08:22,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357950998] [2021-11-19 15:08:22,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357950998] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:08:22,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:08:22,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 15:08:22,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24576839] [2021-11-19 15:08:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:22,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:08:22,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:08:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:08:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:08:22,246 INFO L87 Difference]: Start difference. First operand 312 states and 468 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 15:08:24,370 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 15:08:26,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:08:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:28,930 INFO L93 Difference]: Finished difference Result 603 states and 955 transitions. [2021-11-19 15:08:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:08:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-11-19 15:08:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:28,936 INFO L225 Difference]: With dead ends: 603 [2021-11-19 15:08:28,937 INFO L226 Difference]: Without dead ends: 317 [2021-11-19 15:08:28,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:08:28,940 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 7 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:28,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1559 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-19 15:08:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-19 15:08:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2021-11-19 15:08:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 185 states have internal predecessors, (218), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2021-11-19 15:08:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 469 transitions. [2021-11-19 15:08:28,969 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 469 transitions. Word has length 218 [2021-11-19 15:08:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:28,969 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 469 transitions. [2021-11-19 15:08:28,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-19 15:08:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 469 transitions. [2021-11-19 15:08:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 15:08:28,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:28,974 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:08:29,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:29,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:08:29,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash 849712743, now seen corresponding path program 1 times [2021-11-19 15:08:29,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:08:29,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736494288] [2021-11-19 15:08:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:29,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:08:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:08:29,204 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:08:29,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed93e17d-06fa-4298-88d9-2db9c959cbde/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:08:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:30,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 15:08:30,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:33,962 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 131 treesize of output 123 [2021-11-19 15:08:33,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:08:33,970 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 120 treesize of output 56 [2021-11-19 15:08:33,974 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 56 treesize of output 48 [2021-11-19 15:08:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-19 15:08:34,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:38,667 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 9 treesize of output 3 [2021-11-19 15:08:38,677 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 15:08:39,433 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 15:08:39,434 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 131 treesize of output 1 [2021-11-19 15:08:49,946 WARN L227 SmtUtils]: Spent 9.99s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:08:49,950 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 15:08:49,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771