./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8 --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 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:13,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:13,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:13,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:13,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:13,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:13,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:13,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:13,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:13,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:13,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:13,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:13,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:13,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:13,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:13,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:13,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:13,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:13,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:13,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:13,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:13,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:13,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:13,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:13,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:13,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:13,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:13,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:13,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:13,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:13,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:13,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:13,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:13,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:13,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:13,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:13,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:13,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:13,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:13,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:13,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:13,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:20:13,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:13,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:13,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:13,505 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:13,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:13,505 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:13,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:13,506 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:13,514 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:13,514 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:13,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:13,516 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:13,516 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:13,516 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:13,517 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:13,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:13,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:13,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:13,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:13,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:13,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:13,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:13,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:13,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:13,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:13,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:13,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:13,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:13,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:13,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:13,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:13,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:13,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:13,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:13,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:13,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:13,536 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_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c [2021-11-07 01:20:13,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:13,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:13,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:13,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:13,873 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:13,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-07 01:20:13,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/aa5501ae5/6e0c2b09fdb343dbaa820acd606b2b80/FLAG66c4ae95e [2021-11-07 01:20:15,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:15,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-07 01:20:15,299 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/aa5501ae5/6e0c2b09fdb343dbaa820acd606b2b80/FLAG66c4ae95e [2021-11-07 01:20:15,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/aa5501ae5/6e0c2b09fdb343dbaa820acd606b2b80 [2021-11-07 01:20:15,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:15,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:15,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:15,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:15,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:15,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:15" (1/1) ... [2021-11-07 01:20:15,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66eda0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:15, skipping insertion in model container [2021-11-07 01:20:15,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:15" (1/1) ... [2021-11-07 01:20:15,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:15,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:18,544 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:18,565 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:18,608 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:18,609 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:18,997 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:20,018 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-07 01:20:20,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:20,196 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) [2021-11-07 01:20:20,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67bd760a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:20, skipping insertion in model container [2021-11-07 01:20:20,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:20,197 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:20:20,202 INFO L168 Benchmark]: Toolchain (without parser) took 4793.53 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 49.0 MB in the beginning and 62.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:20,203 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 62.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:20,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4790.67 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 48.7 MB in the beginning and 62.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:20,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 62.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4790.67 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 48.7 MB in the beginning and 62.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7364]: 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_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8 --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 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:22,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:22,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:22,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:22,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:22,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:22,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:22,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:23,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:23,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:23,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:23,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:23,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:23,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:23,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:23,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:23,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:23,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:23,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:23,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:23,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:23,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:23,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:23,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:23,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:23,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:23,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:23,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:23,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:23,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:23,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:23,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:23,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:23,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:23,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:23,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:23,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:23,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:23,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:23,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:23,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:23,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:20:23,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:23,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:23,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:23,168 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:23,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:23,168 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:23,168 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:23,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:23,169 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:23,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:23,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:23,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:23,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:23,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:23,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:23,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:20:23,173 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:20:23,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:23,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:23,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:23,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:23,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:20:23,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:23,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:23,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:23,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:23,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:23,176 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:20:23,176 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:20:23,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:23,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:23,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:23,177 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_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c [2021-11-07 01:20:23,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:23,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:23,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:23,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:23,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:23,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-07 01:20:23,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/cd914197a/2cdb7695f37f4322a12c7bf75a3d7550/FLAG77132fb57 [2021-11-07 01:20:25,137 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:25,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-07 01:20:25,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/cd914197a/2cdb7695f37f4322a12c7bf75a3d7550/FLAG77132fb57 [2021-11-07 01:20:25,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/data/cd914197a/2cdb7695f37f4322a12c7bf75a3d7550 [2021-11-07 01:20:25,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:25,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:25,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:25,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:25,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:25,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:25" (1/1) ... [2021-11-07 01:20:25,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf429f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:25, skipping insertion in model container [2021-11-07 01:20:25,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:25" (1/1) ... [2021-11-07 01:20:25,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:26,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:30,301 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-07 01:20:30,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:30,462 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:20:30,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:31,190 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-07 01:20:31,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:31,328 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:20:32,196 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-07 01:20:32,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:32,714 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:20:32,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32 WrapperNode [2021-11-07 01:20:32,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:32,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:32,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:20:32,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:20:32,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:32,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:35,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:35,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:20:35,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:20:35,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:20:35,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:35,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:35,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:35,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:36,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:37,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:37,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:37,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:20:37,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:20:37,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:20:37,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:20:37,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (1/1) ... [2021-11-07 01:20:38,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:38,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:38,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:20:38,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:20:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:20:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:20:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:20:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:20:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:20:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:20:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:20:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:20:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:20:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:20:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:20:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:20:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:20:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:20:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:20:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:20:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:20:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:25:19,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:25:19,466 INFO L299 CfgBuilder]: Removed 12136 assume(true) statements. [2021-11-07 01:25:19,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:19 BoogieIcfgContainer [2021-11-07 01:25:19,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:25:19,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:25:19,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:25:19,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:25:19,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:20:25" (1/3) ... [2021-11-07 01:25:19,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22f3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:19, skipping insertion in model container [2021-11-07 01:25:19,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:32" (2/3) ... [2021-11-07 01:25:19,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d22f3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:19, skipping insertion in model container [2021-11-07 01:25:19,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:19" (3/3) ... [2021-11-07 01:25:19,506 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-07 01:25:19,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:25:19,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:25:19,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:25:19,630 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 [2021-11-07 01:25:19,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:25:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 11244 states, 11238 states have (on average 1.3570920092543157) internal successors, (15251), 11243 states have internal predecessors, (15251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:25:19,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:19,880 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:19,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:25:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1290306745, now seen corresponding path program 1 times [2021-11-07 01:25:19,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:19,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946822021] [2021-11-07 01:25:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:19,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:19,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:19,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:19,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:25:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:25:26,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:26,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:27,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:27,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946822021] [2021-11-07 01:25:27,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946822021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:27,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:27,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:25:27,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691795446] [2021-11-07 01:25:27,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:25:27,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:25:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:25:27,276 INFO L87 Difference]: Start difference. First operand has 11244 states, 11238 states have (on average 1.3570920092543157) internal successors, (15251), 11243 states have internal predecessors, (15251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:27,712 INFO L93 Difference]: Finished difference Result 22484 states and 30497 transitions. [2021-11-07 01:25:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:25:27,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:25:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:27,804 INFO L225 Difference]: With dead ends: 22484 [2021-11-07 01:25:27,804 INFO L226 Difference]: Without dead ends: 11141 [2021-11-07 01:25:27,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:25:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11141 states. [2021-11-07 01:25:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11141 to 11141. [2021-11-07 01:25:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11141 states, 11136 states have (on average 1.349048132183908) internal successors, (15023), 11140 states have internal predecessors, (15023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11141 states to 11141 states and 15023 transitions. [2021-11-07 01:25:28,299 INFO L78 Accepts]: Start accepts. Automaton has 11141 states and 15023 transitions. Word has length 68 [2021-11-07 01:25:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:28,300 INFO L470 AbstractCegarLoop]: Abstraction has 11141 states and 15023 transitions. [2021-11-07 01:25:28,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 11141 states and 15023 transitions. [2021-11-07 01:25:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:25:28,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:28,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:28,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:28,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:28,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:25:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 689905999, now seen corresponding path program 1 times [2021-11-07 01:25:28,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:28,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83153187] [2021-11-07 01:25:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:28,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:28,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:28,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:28,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:25:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:35,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:35,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:35,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:36,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:36,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83153187] [2021-11-07 01:25:36,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83153187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:36,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:36,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:25:36,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214281641] [2021-11-07 01:25:36,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:25:36,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:25:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:36,143 INFO L87 Difference]: Start difference. First operand 11141 states and 15023 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:40,245 INFO L93 Difference]: Finished difference Result 22278 states and 30057 transitions. [2021-11-07 01:25:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:25:40,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:25:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:40,316 INFO L225 Difference]: With dead ends: 22278 [2021-11-07 01:25:40,317 INFO L226 Difference]: Without dead ends: 11157 [2021-11-07 01:25:40,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11157 states. [2021-11-07 01:25:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11157 to 11157. [2021-11-07 01:25:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11157 states, 11152 states have (on average 1.3485473457675754) internal successors, (15039), 11156 states have internal predecessors, (15039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11157 states to 11157 states and 15039 transitions. [2021-11-07 01:25:40,733 INFO L78 Accepts]: Start accepts. Automaton has 11157 states and 15039 transitions. Word has length 68 [2021-11-07 01:25:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:40,734 INFO L470 AbstractCegarLoop]: Abstraction has 11157 states and 15039 transitions. [2021-11-07 01:25:40,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 11157 states and 15039 transitions. [2021-11-07 01:25:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:25:40,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:40,745 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:40,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:25:40,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:40,961 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:25:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1368302605, now seen corresponding path program 1 times [2021-11-07 01:25:40,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:40,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085218190] [2021-11-07 01:25:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:40,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:40,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:40,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:25:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:46,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:25:46,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:25:47,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:25:48,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:48,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085218190] [2021-11-07 01:25:48,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085218190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:48,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1836037228] [2021-11-07 01:25:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:48,732 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:48,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:48,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:25:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:51,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:25:51,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:25:52,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:25:52,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1836037228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:52,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:25:52,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:25:52,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285419152] [2021-11-07 01:25:52,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:52,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:52,431 INFO L87 Difference]: Start difference. First operand 11157 states and 15039 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:54,407 INFO L93 Difference]: Finished difference Result 30169 states and 40718 transitions. [2021-11-07 01:25:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:54,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 01:25:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:54,513 INFO L225 Difference]: With dead ends: 30169 [2021-11-07 01:25:54,514 INFO L226 Difference]: Without dead ends: 19062 [2021-11-07 01:25:54,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19062 states. [2021-11-07 01:25:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19062 to 18540. [2021-11-07 01:25:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18540 states, 18535 states have (on average 1.348206096574049) internal successors, (24989), 18539 states have internal predecessors, (24989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18540 states to 18540 states and 24989 transitions. [2021-11-07 01:25:55,316 INFO L78 Accepts]: Start accepts. Automaton has 18540 states and 24989 transitions. Word has length 78 [2021-11-07 01:25:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:55,319 INFO L470 AbstractCegarLoop]: Abstraction has 18540 states and 24989 transitions. [2021-11-07 01:25:55,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 18540 states and 24989 transitions. [2021-11-07 01:25:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:25:55,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:55,339 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:55,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:55,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-07 01:25:55,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:55,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:25:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1297531513, now seen corresponding path program 1 times [2021-11-07 01:25:55,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:55,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994635618] [2021-11-07 01:25:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:55,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:55,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:55,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:26:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:01,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:26:02,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:26:03,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:03,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994635618] [2021-11-07 01:26:03,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994635618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:03,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1547926349] [2021-11-07 01:26:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:03,835 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:03,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:03,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:26:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:06,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:06,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:26:07,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:26:07,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1547926349] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:07,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:07,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:07,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274362765] [2021-11-07 01:26:07,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:07,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:07,692 INFO L87 Difference]: Start difference. First operand 18540 states and 24989 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:09,162 INFO L93 Difference]: Finished difference Result 53122 states and 71651 transitions. [2021-11-07 01:26:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 01:26:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:09,275 INFO L225 Difference]: With dead ends: 53122 [2021-11-07 01:26:09,276 INFO L226 Difference]: Without dead ends: 34632 [2021-11-07 01:26:09,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34632 states. [2021-11-07 01:26:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34632 to 34626. [2021-11-07 01:26:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34626 states, 34621 states have (on average 1.3492677854481385) internal successors, (46713), 34625 states have internal predecessors, (46713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34626 states to 34626 states and 46713 transitions. [2021-11-07 01:26:10,857 INFO L78 Accepts]: Start accepts. Automaton has 34626 states and 46713 transitions. Word has length 96 [2021-11-07 01:26:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:10,861 INFO L470 AbstractCegarLoop]: Abstraction has 34626 states and 46713 transitions. [2021-11-07 01:26:10,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 34626 states and 46713 transitions. [2021-11-07 01:26:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 01:26:10,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:10,901 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:10,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:11,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:26:11,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:11,328 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:26:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash -227266675, now seen corresponding path program 1 times [2021-11-07 01:26:11,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:11,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053749917] [2021-11-07 01:26:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:11,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:11,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:11,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:11,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:26:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:18,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:26:19,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:26:20,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:20,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053749917] [2021-11-07 01:26:20,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053749917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:20,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1883573827] [2021-11-07 01:26:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:20,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:20,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:20,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:20,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:26:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:22,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:22,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:26:24,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:26:26,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1883573827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:26,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:26,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:26,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950002210] [2021-11-07 01:26:26,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:26,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:26,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:26,071 INFO L87 Difference]: Start difference. First operand 34626 states and 46713 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:30,072 INFO L93 Difference]: Finished difference Result 66240 states and 89306 transitions. [2021-11-07 01:26:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:30,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-07 01:26:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:30,259 INFO L225 Difference]: With dead ends: 66240 [2021-11-07 01:26:30,260 INFO L226 Difference]: Without dead ends: 66230 [2021-11-07 01:26:30,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66230 states. [2021-11-07 01:26:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66230 to 65758. [2021-11-07 01:26:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65758 states, 65753 states have (on average 1.3489422535853877) internal successors, (88697), 65757 states have internal predecessors, (88697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65758 states to 65758 states and 88697 transitions. [2021-11-07 01:26:32,893 INFO L78 Accepts]: Start accepts. Automaton has 65758 states and 88697 transitions. Word has length 138 [2021-11-07 01:26:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:32,894 INFO L470 AbstractCegarLoop]: Abstraction has 65758 states and 88697 transitions. [2021-11-07 01:26:32,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 65758 states and 88697 transitions. [2021-11-07 01:26:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 01:26:32,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:32,978 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:33,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-07 01:26:33,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:26:33,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:33,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:26:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1262091054, now seen corresponding path program 1 times [2021-11-07 01:26:33,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:33,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227303667] [2021-11-07 01:26:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:33,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:33,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:33,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:26:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:41,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:41,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:26:43,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:26:45,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:45,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227303667] [2021-11-07 01:26:45,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227303667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:45,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192262972] [2021-11-07 01:26:45,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:45,769 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:45,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:45,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:26:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:49,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:49,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-07 01:26:51,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-07 01:26:52,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192262972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:52,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:52,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:52,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357975143] [2021-11-07 01:26:52,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:52,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:52,682 INFO L87 Difference]: Start difference. First operand 65758 states and 88697 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:57,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:57,458 INFO L93 Difference]: Finished difference Result 174122 states and 234787 transitions. [2021-11-07 01:26:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:57,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-07 01:26:57,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:57,754 INFO L225 Difference]: With dead ends: 174122 [2021-11-07 01:26:57,755 INFO L226 Difference]: Without dead ends: 108414 [2021-11-07 01:26:57,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108414 states. [2021-11-07 01:27:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108414 to 108396. [2021-11-07 01:27:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108396 states, 108391 states have (on average 1.3481285346569365) internal successors, (146125), 108395 states have internal predecessors, (146125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108396 states to 108396 states and 146125 transitions. [2021-11-07 01:27:01,496 INFO L78 Accepts]: Start accepts. Automaton has 108396 states and 146125 transitions. Word has length 229 [2021-11-07 01:27:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:01,497 INFO L470 AbstractCegarLoop]: Abstraction has 108396 states and 146125 transitions. [2021-11-07 01:27:01,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 108396 states and 146125 transitions. [2021-11-07 01:27:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-07 01:27:01,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:01,624 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:01,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:27:01,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:02,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:02,049 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:02,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1124945790, now seen corresponding path program 1 times [2021-11-07 01:27:02,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:02,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330382911] [2021-11-07 01:27:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:02,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:02,057 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:02,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:27:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:11,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:11,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:27:12,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:27:14,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:14,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330382911] [2021-11-07 01:27:14,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330382911] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:14,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1162137512] [2021-11-07 01:27:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:14,407 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:14,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:14,411 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:14,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:27:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:18,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:27:18,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:27:20,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 01:27:21,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1162137512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:21,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:27:21,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:27:21,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057255179] [2021-11-07 01:27:21,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:27:21,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:27:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:27:21,638 INFO L87 Difference]: Start difference. First operand 108396 states and 146125 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:26,258 INFO L93 Difference]: Finished difference Result 216742 states and 292194 transitions. [2021-11-07 01:27:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:27:26,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2021-11-07 01:27:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:26,507 INFO L225 Difference]: With dead ends: 216742 [2021-11-07 01:27:26,508 INFO L226 Difference]: Without dead ends: 108396 [2021-11-07 01:27:26,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 997 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:27:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108396 states. [2021-11-07 01:27:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108396 to 108356. [2021-11-07 01:27:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108356 states, 108351 states have (on average 1.348183219351921) internal successors, (146077), 108355 states have internal predecessors, (146077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108356 states to 108356 states and 146077 transitions. [2021-11-07 01:27:31,713 INFO L78 Accepts]: Start accepts. Automaton has 108356 states and 146077 transitions. Word has length 252 [2021-11-07 01:27:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:31,714 INFO L470 AbstractCegarLoop]: Abstraction has 108356 states and 146077 transitions. [2021-11-07 01:27:31,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 108356 states and 146077 transitions. [2021-11-07 01:27:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-07 01:27:31,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:31,906 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:32,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:27:32,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:32,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:32,333 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:27:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:32,334 INFO L85 PathProgramCache]: Analyzing trace with hash 775346842, now seen corresponding path program 1 times [2021-11-07 01:27:32,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:32,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876803346] [2021-11-07 01:27:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:32,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:32,341 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:32,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:27:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:41,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:41,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:27:43,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:27:45,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:45,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876803346] [2021-11-07 01:27:45,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876803346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:45,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [600891697] [2021-11-07 01:27:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:45,349 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:45,351 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:45,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43cdc868-d1aa-4f28-b566-8d59bc3d98aa/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:27:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:50,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:50,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:27:51,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:27:53,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [600891697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:53,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:27:53,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 01:27:53,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202594472] [2021-11-07 01:27:53,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:27:53,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:27:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:27:53,145 INFO L87 Difference]: Start difference. First operand 108356 states and 146077 transitions. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)