./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-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:17,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:17,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:17,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:17,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:17,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:17,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:17,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:17,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:17,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:17,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:17,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:17,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:17,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:17,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:17,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:17,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:17,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:17,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:17,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:17,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:17,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:17,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:17,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:17,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:17,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:17,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:17,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:17,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:17,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:17,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:17,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:17,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:17,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:17,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:17,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:17,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:17,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:17,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:17,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:17,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:17,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:37:17,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:17,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:17,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:17,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:17,492 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:17,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:17,493 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:17,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:37:17,493 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:17,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:17,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:37:17,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:37:17,495 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:17,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:37:17,496 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:37:17,496 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:37:17,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:17,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:37:17,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:17,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:17,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:17,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:17,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:17,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:17,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:17,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:17,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:17,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:17,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:17,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:17,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:17,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:17,503 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:37:17,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:37:17,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:17,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:17,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:17,505 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-13 02:37:17,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:17,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:17,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:17,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:17,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:17,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-13 02:37:17,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/83e7f761a/bf6b95880e1b4388aa2ae2a8962190d4/FLAGf5dfd4685 [2021-11-13 02:37:18,713 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:18,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-13 02:37:18,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/83e7f761a/bf6b95880e1b4388aa2ae2a8962190d4/FLAGf5dfd4685 [2021-11-13 02:37:19,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/83e7f761a/bf6b95880e1b4388aa2ae2a8962190d4 [2021-11-13 02:37:19,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:19,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:19,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:19,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:19,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:19,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:19" (1/1) ... [2021-11-13 02:37:19,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f39e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:19, skipping insertion in model container [2021-11-13 02:37:19,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:19" (1/1) ... [2021-11-13 02:37:19,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:19,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:20,679 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:37:21,556 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-13 02:37:21,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:21,707 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) [2021-11-13 02:37:21,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8cbec89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:21, skipping insertion in model container [2021-11-13 02:37:21,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:21,709 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:37:21,711 INFO L158 Benchmark]: Toolchain (without parser) took 2543.64ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 80.0MB in the beginning and 94.5MB in the end (delta: -14.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2021-11-13 02:37:21,712 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:37:21,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2538.09ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 79.7MB in the beginning and 94.5MB in the end (delta: -14.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2021-11-13 02:37:21,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2538.09ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 79.7MB in the beginning and 94.5MB in the end (delta: -14.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4351]: 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:23,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:23,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:23,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:23,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:23,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:23,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:23,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:23,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:23,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:23,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:23,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:24,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:24,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:24,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:24,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:24,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:24,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:24,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:24,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:24,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:24,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:24,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:24,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:24,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:24,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:24,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:24,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:24,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:24,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:24,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:24,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:24,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:24,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:24,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:24,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:24,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:24,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:24,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:24,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:24,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:24,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:37:24,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:24,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:24,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:24,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:24,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:24,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:24,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:24,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:24,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:24,072 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:24,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:24,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:24,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:24,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:24,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:24,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:24,076 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:37:24,077 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:37:24,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:24,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:24,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:24,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:24,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:37:24,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:24,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:24,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:24,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:24,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:24,080 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:37:24,080 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:37:24,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:24,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:24,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:24,081 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-13 02:37:24,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:24,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:24,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:24,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:24,502 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:24,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-13 02:37:24,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/85e5e99ec/cdf3db7855424566bae0b675c7b50d4f/FLAG0fdfd852e [2021-11-13 02:37:25,594 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:25,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-13 02:37:25,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/85e5e99ec/cdf3db7855424566bae0b675c7b50d4f/FLAG0fdfd852e [2021-11-13 02:37:26,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/data/85e5e99ec/cdf3db7855424566bae0b675c7b50d4f [2021-11-13 02:37:26,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:26,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:26,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:26,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:26,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:26,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:26" (1/1) ... [2021-11-13 02:37:26,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7930ac73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:26, skipping insertion in model container [2021-11-13 02:37:26,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:26" (1/1) ... [2021-11-13 02:37:26,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:26,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:28,647 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-13 02:37:28,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:28,755 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:37:28,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:29,373 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-13 02:37:29,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:29,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:37:29,922 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_eebc259c-75ae-47b7-9f42-d9b44f810a1e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-13 02:37:29,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:30,078 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:37:30,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30 WrapperNode [2021-11-13 02:37:30,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:30,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:30,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:37:30,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:37:30,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:30,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:37:30,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:37:30,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:37:30,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:37:30,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:37:30,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:37:30,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:37:30,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (1/1) ... [2021-11-13 02:37:30,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:30,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:37:30,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:37:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-13 02:37:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-13 02:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2021-11-13 02:37:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2021-11-13 02:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2021-11-13 02:37:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2021-11-13 02:37:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-11-13 02:37:31,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-11-13 02:37:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2021-11-13 02:37:31,020 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2021-11-13 02:37:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2021-11-13 02:37:31,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2021-11-13 02:37:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:37:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2021-11-13 02:37:31,021 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2021-11-13 02:37:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2021-11-13 02:37:31,021 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2021-11-13 02:37:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:37:31,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:37:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:37:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:37:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:37:31,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:37:31,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 02:37:31,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 02:37:31,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:37:31,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:37:31,023 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2021-11-13 02:37:31,023 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2021-11-13 02:37:31,023 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2021-11-13 02:37:31,023 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2021-11-13 02:37:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-13 02:37:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-13 02:37:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-13 02:37:31,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-13 02:37:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2021-11-13 02:37:31,025 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2021-11-13 02:37:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-13 02:37:31,026 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-13 02:37:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2021-11-13 02:37:31,026 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2021-11-13 02:37:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2021-11-13 02:37:31,026 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2021-11-13 02:37:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2021-11-13 02:37:31,027 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2021-11-13 02:37:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2021-11-13 02:37:31,027 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2021-11-13 02:37:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 02:37:31,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 02:37:31,028 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2021-11-13 02:37:31,028 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2021-11-13 02:37:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2021-11-13 02:37:31,029 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2021-11-13 02:37:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2021-11-13 02:37:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2021-11-13 02:37:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:37:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:37:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 02:37:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 02:37:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2021-11-13 02:37:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2021-11-13 02:37:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2021-11-13 02:37:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2021-11-13 02:37:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2021-11-13 02:37:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2021-11-13 02:37:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-13 02:37:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-13 02:37:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:37:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 02:37:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2021-11-13 02:37:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2021-11-13 02:37:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:37:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2021-11-13 02:37:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2021-11-13 02:37:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 02:37:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 02:37:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~VOID [2021-11-13 02:37:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~VOID [2021-11-13 02:37:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:37:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:37:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:37:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2021-11-13 02:37:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2021-11-13 02:37:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:37:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:37:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:37:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 02:37:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:37:31,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:37:31,038 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 02:37:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 02:37:31,039 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-13 02:37:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-13 02:37:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 02:37:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 02:37:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-13 02:37:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-13 02:37:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2021-11-13 02:37:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2021-11-13 02:37:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2021-11-13 02:37:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2021-11-13 02:37:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2021-11-13 02:37:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2021-11-13 02:37:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2021-11-13 02:37:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2021-11-13 02:37:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2021-11-13 02:37:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2021-11-13 02:37:31,043 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2021-11-13 02:37:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2021-11-13 02:37:31,043 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2021-11-13 02:37:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2021-11-13 02:37:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:37:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:37:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:37:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:37:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2021-11-13 02:37:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2021-11-13 02:37:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-13 02:37:31,049 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-13 02:37:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 02:37:31,050 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 02:37:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2021-11-13 02:37:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2021-11-13 02:37:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:37:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:37:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2021-11-13 02:37:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2021-11-13 02:37:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:37:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:37:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-13 02:37:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-13 02:37:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:37:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:37:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2021-11-13 02:37:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2021-11-13 02:37:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2021-11-13 02:37:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2021-11-13 02:37:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2021-11-13 02:37:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2021-11-13 02:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 02:37:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 02:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2021-11-13 02:37:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2021-11-13 02:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 02:37:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 02:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2021-11-13 02:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2021-11-13 02:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2021-11-13 02:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2021-11-13 02:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2021-11-13 02:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2021-11-13 02:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-11-13 02:37:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-11-13 02:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2021-11-13 02:37:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2021-11-13 02:37:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2021-11-13 02:37:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2021-11-13 02:37:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2021-11-13 02:37:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2021-11-13 02:37:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2021-11-13 02:37:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2021-11-13 02:37:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2021-11-13 02:37:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2021-11-13 02:37:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~X~C_INT~X~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~VOID [2021-11-13 02:37:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~X~C_INT~X~C_INT~X~C_INT~X~C_INT~X~C_INT~TO~VOID [2021-11-13 02:37:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2021-11-13 02:37:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2021-11-13 02:37:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2021-11-13 02:37:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2021-11-13 02:37:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2021-11-13 02:37:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2021-11-13 02:37:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-13 02:37:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-13 02:37:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2021-11-13 02:37:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2021-11-13 02:37:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2021-11-13 02:37:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2021-11-13 02:37:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:37:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2021-11-13 02:37:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2021-11-13 02:37:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2021-11-13 02:37:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2021-11-13 02:37:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-13 02:37:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-13 02:37:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:37:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:37:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 02:37:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 02:37:37,398 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:39:24,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:39:24,000 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:39:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:39:24 BoogieIcfgContainer [2021-11-13 02:39:24,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:39:24,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:39:24,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:39:24,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:39:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:37:26" (1/3) ... [2021-11-13 02:39:24,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc0b9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:39:24, skipping insertion in model container [2021-11-13 02:39:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:30" (2/3) ... [2021-11-13 02:39:24,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc0b9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:39:24, skipping insertion in model container [2021-11-13 02:39:24,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:39:24" (3/3) ... [2021-11-13 02:39:24,025 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-13 02:39:24,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:39:24,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:39:24,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:39:24,103 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 [2021-11-13 02:39:24,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:39:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1593 states have (on average 1.448210922787194) internal successors, (2307), 1644 states have internal predecessors, (2307), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) [2021-11-13 02:39:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-13 02:39:24,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:24,241 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:24,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:24,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1349604197, now seen corresponding path program 1 times [2021-11-13 02:39:24,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:24,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888089872] [2021-11-13 02:39:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:24,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:24,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:24,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:24,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:39:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:26,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2235 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:39:26,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 5258 trivial. 0 not checked. [2021-11-13 02:39:37,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 5406 trivial. 0 not checked. [2021-11-13 02:39:40,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:40,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888089872] [2021-11-13 02:39:40,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888089872] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:40,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:39:40,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 02:39:40,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923964365] [2021-11-13 02:39:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:40,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:39:40,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:39:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:39:40,928 INFO L87 Difference]: Start difference. First operand has 2071 states, 1593 states have (on average 1.448210922787194) internal successors, (2307), 1644 states have internal predecessors, (2307), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 02:39:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:41,123 INFO L93 Difference]: Finished difference Result 4137 states and 6293 transitions. [2021-11-13 02:39:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:39:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 539 [2021-11-13 02:39:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:41,167 INFO L225 Difference]: With dead ends: 4137 [2021-11-13 02:39:41,170 INFO L226 Difference]: Without dead ends: 2059 [2021-11-13 02:39:41,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1076 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:39:41,196 INFO L933 BasicCegarLoop]: 3087 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:41,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3087 Invalid, 0 Unknown, 0 Unchecked, 16.54ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:39:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-11-13 02:39:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2059. [2021-11-13 02:39:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1588 states have (on average 1.4445843828715366) internal successors, (2294), 1632 states have internal predecessors, (2294), 390 states have call successors, (390), 81 states have call predecessors, (390), 80 states have return successors, (388), 376 states have call predecessors, (388), 388 states have call successors, (388) [2021-11-13 02:39:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3072 transitions. [2021-11-13 02:39:41,395 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3072 transitions. Word has length 539 [2021-11-13 02:39:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:41,397 INFO L470 AbstractCegarLoop]: Abstraction has 2059 states and 3072 transitions. [2021-11-13 02:39:41,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 02:39:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3072 transitions. [2021-11-13 02:39:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-13 02:39:41,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:41,423 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:41,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:41,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:41,639 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1210784395, now seen corresponding path program 1 times [2021-11-13 02:39:41,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:41,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793691388] [2021-11-13 02:39:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:41,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:41,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:39:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:43,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:39:43,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 5144 trivial. 0 not checked. [2021-11-13 02:39:54,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 5210 trivial. 0 not checked. [2021-11-13 02:40:00,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:00,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793691388] [2021-11-13 02:40:00,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793691388] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:00,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:40:00,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 02:40:00,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425486298] [2021-11-13 02:40:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:00,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:00,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:00,390 INFO L87 Difference]: Start difference. First operand 2059 states and 3072 transitions. Second operand has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:40:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:08,200 INFO L93 Difference]: Finished difference Result 4104 states and 6221 transitions. [2021-11-13 02:40:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:08,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 539 [2021-11-13 02:40:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:08,222 INFO L225 Difference]: With dead ends: 4104 [2021-11-13 02:40:08,222 INFO L226 Difference]: Without dead ends: 2062 [2021-11-13 02:40:08,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1069 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:40:08,237 INFO L933 BasicCegarLoop]: 3031 mSDtfsCounter, 6 mSDsluCounter, 12045 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6913.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15076 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.55ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7029.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:08,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 15076 Invalid, 313 Unknown, 0 Unchecked, 40.55ms Time], IncrementalHoareTripleChecker [34 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 7029.23ms Time] [2021-11-13 02:40:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-11-13 02:40:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2062. [2021-11-13 02:40:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1590 states have (on average 1.4446540880503145) internal successors, (2297), 1635 states have internal predecessors, (2297), 390 states have call successors, (390), 81 states have call predecessors, (390), 81 states have return successors, (392), 376 states have call predecessors, (392), 388 states have call successors, (392) [2021-11-13 02:40:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3079 transitions. [2021-11-13 02:40:08,343 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3079 transitions. Word has length 539 [2021-11-13 02:40:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:08,345 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 3079 transitions. [2021-11-13 02:40:08,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:40:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3079 transitions. [2021-11-13 02:40:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-11-13 02:40:08,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:08,364 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:08,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:08,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:08,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1893137437, now seen corresponding path program 1 times [2021-11-13 02:40:08,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:08,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550295599] [2021-11-13 02:40:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:08,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:08,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:08,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:40:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:10,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:40:10,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 396 proven. 1 refuted. 0 times theorem prover too weak. 6761 trivial. 0 not checked. [2021-11-13 02:40:21,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 6827 trivial. 0 not checked. [2021-11-13 02:40:28,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:28,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550295599] [2021-11-13 02:40:28,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550295599] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:28,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2113939981] [2021-11-13 02:40:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:28,888 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:28,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:40:28,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:40:28,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-13 02:40:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:30,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:40:32,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:40:34,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2113939981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:34,648 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:40:34,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-13 02:40:34,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530545623] [2021-11-13 02:40:34,650 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:34,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:34,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:40:34,654 INFO L87 Difference]: Start difference. First operand 2062 states and 3079 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-13 02:40:36,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:06,236 INFO L93 Difference]: Finished difference Result 7839 states and 11730 transitions. [2021-11-13 02:41:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:41:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 573 [2021-11-13 02:41:06,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:06,297 INFO L225 Difference]: With dead ends: 7839 [2021-11-13 02:41:06,297 INFO L226 Difference]: Without dead ends: 5870 [2021-11-13 02:41:06,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2288 GetRequests, 2277 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:41:06,312 INFO L933 BasicCegarLoop]: 3751 mSDtfsCounter, 8065 mSDsluCounter, 5103 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 682 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29401.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8065 SdHoareTripleChecker+Valid, 8854 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.69ms SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31282.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:06,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8065 Valid, 8854 Invalid, 1450 Unknown, 0 Unchecked, 37.69ms Time], IncrementalHoareTripleChecker [682 Valid, 767 Invalid, 1 Unknown, 0 Unchecked, 31282.87ms Time] [2021-11-13 02:41:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2021-11-13 02:41:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5864. [2021-11-13 02:41:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 4576 states have (on average 1.457167832167832) internal successors, (6668), 4705 states have internal predecessors, (6668), 1050 states have call successors, (1050), 235 states have call predecessors, (1050), 237 states have return successors, (1060), 1012 states have call predecessors, (1060), 1048 states have call successors, (1060) [2021-11-13 02:41:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 8778 transitions. [2021-11-13 02:41:06,556 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 8778 transitions. Word has length 573 [2021-11-13 02:41:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:06,559 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 8778 transitions. [2021-11-13 02:41:06,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-13 02:41:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 8778 transitions. [2021-11-13 02:41:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-13 02:41:06,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:06,571 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:06,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:06,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-13 02:41:06,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:06,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:06,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:06,988 INFO L85 PathProgramCache]: Analyzing trace with hash -819618919, now seen corresponding path program 1 times [2021-11-13 02:41:06,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:06,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353930589] [2021-11-13 02:41:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:06,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:06,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:06,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:06,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:41:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:08,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:41:08,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 396 proven. 1 refuted. 0 times theorem prover too weak. 6761 trivial. 0 not checked. [2021-11-13 02:41:20,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 6827 trivial. 0 not checked. [2021-11-13 02:41:27,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:27,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353930589] [2021-11-13 02:41:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353930589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:41:27,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7475632] [2021-11-13 02:41:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:27,544 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:27,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:41:27,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:41:27,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-13 02:41:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:28,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:41:28,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:41:55,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:42:02,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [7475632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:02,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:42:02,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:42:02,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544081926] [2021-11-13 02:42:02,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:02,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:42:02,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:42:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:42:02,019 INFO L87 Difference]: Start difference. First operand 5864 states and 8778 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-13 02:42:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:02,447 INFO L93 Difference]: Finished difference Result 17382 states and 26110 transitions. [2021-11-13 02:42:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:42:02,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 581 [2021-11-13 02:42:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:02,556 INFO L225 Difference]: With dead ends: 17382 [2021-11-13 02:42:02,556 INFO L226 Difference]: Without dead ends: 11615 [2021-11-13 02:42:02,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2320 GetRequests, 2310 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:42:02,597 INFO L933 BasicCegarLoop]: 3514 mSDtfsCounter, 2877 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2877 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:02,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2877 Valid, 6454 Invalid, 8 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 167.53ms Time] [2021-11-13 02:42:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11615 states. [2021-11-13 02:42:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11615 to 11610. [2021-11-13 02:42:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11610 states, 9087 states have (on average 1.4598877517332454) internal successors, (13266), 9345 states have internal predecessors, (13266), 2051 states have call successors, (2051), 466 states have call predecessors, (2051), 471 states have return successors, (2096), 1976 states have call predecessors, (2096), 2048 states have call successors, (2096) [2021-11-13 02:42:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11610 states to 11610 states and 17413 transitions. [2021-11-13 02:42:03,209 INFO L78 Accepts]: Start accepts. Automaton has 11610 states and 17413 transitions. Word has length 581 [2021-11-13 02:42:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:03,210 INFO L470 AbstractCegarLoop]: Abstraction has 11610 states and 17413 transitions. [2021-11-13 02:42:03,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-13 02:42:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 11610 states and 17413 transitions. [2021-11-13 02:42:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2021-11-13 02:42:03,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:03,227 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:03,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:03,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 02:42:03,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:03,643 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 604212687, now seen corresponding path program 1 times [2021-11-13 02:42:03,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:03,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176992545] [2021-11-13 02:42:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:03,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:03,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:03,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:42:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:05,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:42:05,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 396 proven. 1 refuted. 0 times theorem prover too weak. 6761 trivial. 0 not checked. [2021-11-13 02:42:17,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 6827 trivial. 0 not checked. [2021-11-13 02:42:24,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:24,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176992545] [2021-11-13 02:42:24,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176992545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:42:24,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032030442] [2021-11-13 02:42:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:24,386 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:24,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:42:24,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:42:24,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-13 02:42:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:25,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:42:25,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:42:28,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:42:30,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032030442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:30,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:42:30,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:42:30,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890820417] [2021-11-13 02:42:30,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:30,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:42:30,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:42:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:42:30,285 INFO L87 Difference]: Start difference. First operand 11610 states and 17413 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-13 02:42:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:30,942 INFO L93 Difference]: Finished difference Result 32365 states and 48429 transitions. [2021-11-13 02:42:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:42:30,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 594 [2021-11-13 02:42:30,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:31,074 INFO L225 Difference]: With dead ends: 32365 [2021-11-13 02:42:31,075 INFO L226 Difference]: Without dead ends: 20858 [2021-11-13 02:42:31,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2372 GetRequests, 2362 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:42:31,137 INFO L933 BasicCegarLoop]: 3372 mSDtfsCounter, 2491 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2491 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.58ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:31,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2491 Valid, 6303 Invalid, 8 Unknown, 0 Unchecked, 11.15ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 234.58ms Time] [2021-11-13 02:42:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20858 states. [2021-11-13 02:42:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20858 to 20850. [2021-11-13 02:42:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20850 states, 16290 states have (on average 1.4569060773480662) internal successors, (23733), 16758 states have internal predecessors, (23733), 3669 states have call successors, (3669), 879 states have call predecessors, (3669), 890 states have return successors, (3746), 3526 states have call predecessors, (3746), 3665 states have call successors, (3746) [2021-11-13 02:42:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20850 states to 20850 states and 31148 transitions. [2021-11-13 02:42:32,136 INFO L78 Accepts]: Start accepts. Automaton has 20850 states and 31148 transitions. Word has length 594 [2021-11-13 02:42:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:32,138 INFO L470 AbstractCegarLoop]: Abstraction has 20850 states and 31148 transitions. [2021-11-13 02:42:32,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-13 02:42:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 20850 states and 31148 transitions. [2021-11-13 02:42:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-11-13 02:42:32,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:32,152 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:32,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:32,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:32,571 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1111038322, now seen corresponding path program 1 times [2021-11-13 02:42:32,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:32,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307734552] [2021-11-13 02:42:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:32,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:32,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:32,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:32,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:42:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:34,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:42:34,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 396 proven. 1 refuted. 0 times theorem prover too weak. 6761 trivial. 0 not checked. [2021-11-13 02:42:46,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 6827 trivial. 0 not checked. [2021-11-13 02:42:53,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:53,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307734552] [2021-11-13 02:42:53,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307734552] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:42:53,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1421465491] [2021-11-13 02:42:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:53,479 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:53,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:42:53,480 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:42:53,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 02:42:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:54,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:42:54,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:42:57,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7158 trivial. 0 not checked. [2021-11-13 02:42:59,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1421465491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:59,673 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:42:59,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:42:59,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617303070] [2021-11-13 02:42:59,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:59,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:42:59,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:42:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:42:59,676 INFO L87 Difference]: Start difference. First operand 20850 states and 31148 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-13 02:43:02,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:43:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:04,437 INFO L93 Difference]: Finished difference Result 50789 states and 75422 transitions. [2021-11-13 02:43:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:43:04,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 593 [2021-11-13 02:43:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:04,743 INFO L225 Difference]: With dead ends: 50789 [2021-11-13 02:43:04,743 INFO L226 Difference]: Without dead ends: 30036 [2021-11-13 02:43:04,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 2358 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:43:04,802 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 1913 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4107.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 7173 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4285.85ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:04,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 7173 Invalid, 77 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 4285.85ms Time] [2021-11-13 02:43:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30036 states. [2021-11-13 02:43:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30036 to 30028. [2021-11-13 02:43:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30028 states, 23643 states have (on average 1.4529881994670728) internal successors, (34353), 24287 states have internal predecessors, (34353), 4957 states have call successors, (4957), 1410 states have call predecessors, (4957), 1427 states have return successors, (5082), 4768 states have call predecessors, (5082), 4951 states have call successors, (5082) [2021-11-13 02:43:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30028 states to 30028 states and 44392 transitions. [2021-11-13 02:43:06,067 INFO L78 Accepts]: Start accepts. Automaton has 30028 states and 44392 transitions. Word has length 593 [2021-11-13 02:43:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:06,068 INFO L470 AbstractCegarLoop]: Abstraction has 30028 states and 44392 transitions. [2021-11-13 02:43:06,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-13 02:43:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 30028 states and 44392 transitions. [2021-11-13 02:43:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2021-11-13 02:43:06,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:06,090 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-11-13 02:43:06,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:06,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:06,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:06,515 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1362592549, now seen corresponding path program 1 times [2021-11-13 02:43:06,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:06,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078419372] [2021-11-13 02:43:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:06,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:06,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:06,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:43:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:43:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 620 proven. 1 refuted. 0 times theorem prover too weak. 6783 trivial. 0 not checked. [2021-11-13 02:43:21,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 7073 trivial. 0 not checked. [2021-11-13 02:43:30,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:30,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078419372] [2021-11-13 02:43:30,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078419372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:30,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1928350432] [2021-11-13 02:43:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:30,296 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:43:30,296 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:43:30,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 02:43:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:31,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:31,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7404 trivial. 0 not checked. [2021-11-13 02:43:33,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7404 trivial. 0 not checked. [2021-11-13 02:43:35,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1928350432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:35,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:43:35,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:43:35,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520393190] [2021-11-13 02:43:35,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:35,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:43:35,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:35,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:43:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:43:35,044 INFO L87 Difference]: Start difference. First operand 30028 states and 44392 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-13 02:43:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:35,701 INFO L93 Difference]: Finished difference Result 60036 states and 88771 transitions. [2021-11-13 02:43:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:43:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 648 [2021-11-13 02:43:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:35,845 INFO L225 Difference]: With dead ends: 60036 [2021-11-13 02:43:35,845 INFO L226 Difference]: Without dead ends: 30120 [2021-11-13 02:43:35,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2588 GetRequests, 2578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:43:35,931 INFO L933 BasicCegarLoop]: 3077 mSDtfsCounter, 21 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6126 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:35,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 6126 Invalid, 5 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 96.00ms Time] [2021-11-13 02:43:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30120 states. [2021-11-13 02:43:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30120 to 30044. [2021-11-13 02:43:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30044 states, 23659 states have (on average 1.4526818546853206) internal successors, (34369), 24303 states have internal predecessors, (34369), 4957 states have call successors, (4957), 1410 states have call predecessors, (4957), 1427 states have return successors, (5082), 4768 states have call predecessors, (5082), 4951 states have call successors, (5082) [2021-11-13 02:43:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30044 states to 30044 states and 44408 transitions. [2021-11-13 02:43:37,267 INFO L78 Accepts]: Start accepts. Automaton has 30044 states and 44408 transitions. Word has length 648 [2021-11-13 02:43:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:37,269 INFO L470 AbstractCegarLoop]: Abstraction has 30044 states and 44408 transitions. [2021-11-13 02:43:37,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-13 02:43:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 30044 states and 44408 transitions. [2021-11-13 02:43:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2021-11-13 02:43:37,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:37,294 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-11-13 02:43:37,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:37,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:37,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:37,719 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash 347849892, now seen corresponding path program 1 times [2021-11-13 02:43:37,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:37,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717097248] [2021-11-13 02:43:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:37,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:37,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:37,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:43:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:39,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:43:39,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 620 proven. 1 refuted. 0 times theorem prover too weak. 6783 trivial. 0 not checked. [2021-11-13 02:43:53,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 7073 trivial. 0 not checked. [2021-11-13 02:44:01,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:01,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717097248] [2021-11-13 02:44:01,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717097248] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:01,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1518282500] [2021-11-13 02:44:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:01,480 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:01,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:01,486 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:01,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 02:44:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:04,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:44:04,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 620 proven. 1 refuted. 0 times theorem prover too weak. 6783 trivial. 0 not checked. [2021-11-13 02:44:18,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 7073 trivial. 0 not checked. [2021-11-13 02:44:25,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1518282500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:25,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885627600] [2021-11-13 02:44:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:25,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:25,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:25,605 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:25,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 02:44:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:26,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:26,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 7172 trivial. 0 not checked. [2021-11-13 02:44:30,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7398 trivial. 0 not checked. [2021-11-13 02:44:33,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885627600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:33,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 02:44:33,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7, 7, 7] total 13 [2021-11-13 02:44:33,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772739838] [2021-11-13 02:44:33,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:33,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:33,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:33,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:33,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:44:33,076 INFO L87 Difference]: Start difference. First operand 30044 states and 44408 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 02:44:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:33,954 INFO L93 Difference]: Finished difference Result 60000 states and 88703 transitions. [2021-11-13 02:44:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:33,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 650 [2021-11-13 02:44:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:34,114 INFO L225 Difference]: With dead ends: 60000 [2021-11-13 02:44:34,114 INFO L226 Difference]: Without dead ends: 30068 [2021-11-13 02:44:34,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3894 GetRequests, 3883 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:44:34,204 INFO L933 BasicCegarLoop]: 3070 mSDtfsCounter, 2 mSDsluCounter, 6134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 235.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9204 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.86ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.06ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:34,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9204 Invalid, 11 Unknown, 0 Unchecked, 27.86ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 241.06ms Time] [2021-11-13 02:44:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30068 states. [2021-11-13 02:44:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30068 to 30068. [2021-11-13 02:44:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30068 states, 23683 states have (on average 1.4522231136258075) internal successors, (34393), 24327 states have internal predecessors, (34393), 4957 states have call successors, (4957), 1410 states have call predecessors, (4957), 1427 states have return successors, (5082), 4768 states have call predecessors, (5082), 4951 states have call successors, (5082) [2021-11-13 02:44:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30068 states to 30068 states and 44432 transitions. [2021-11-13 02:44:35,682 INFO L78 Accepts]: Start accepts. Automaton has 30068 states and 44432 transitions. Word has length 650 [2021-11-13 02:44:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:35,684 INFO L470 AbstractCegarLoop]: Abstraction has 30068 states and 44432 transitions. [2021-11-13 02:44:35,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 02:44:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 30068 states and 44432 transitions. [2021-11-13 02:44:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2021-11-13 02:44:35,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:35,707 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-11-13 02:44:35,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:35,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:36,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-13 02:44:36,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:36,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash 491070508, now seen corresponding path program 1 times [2021-11-13 02:44:36,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:36,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964622889] [2021-11-13 02:44:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:36,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:36,337 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:36,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:44:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:38,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:44:38,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 620 proven. 1 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2021-11-13 02:44:53,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 7077 trivial. 0 not checked. [2021-11-13 02:45:03,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:45:03,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964622889] [2021-11-13 02:45:03,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964622889] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:03,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1865677618] [2021-11-13 02:45:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:03,191 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:03,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:45:03,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:45:03,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-13 02:45:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:45:06,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 620 proven. 1 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2021-11-13 02:45:21,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 7077 trivial. 0 not checked. [2021-11-13 02:45:30,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1865677618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:30,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202912753] [2021-11-13 02:45:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:30,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:30,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:30,460 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 02:45:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:31,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:45:32,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 620 proven. 1 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2021-11-13 02:45:48,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 7077 trivial. 0 not checked. [2021-11-13 02:45:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202912753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:57,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:45:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 11 [2021-11-13 02:45:57,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563004124] [2021-11-13 02:45:57,051 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:45:57,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:45:57,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:45:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:45:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:45:57,056 INFO L87 Difference]: Start difference. First operand 30068 states and 44432 transitions. Second operand has 11 states, 9 states have (on average 17.88888888888889) internal successors, (161), 11 states have internal predecessors, (161), 4 states have call successors, (102), 2 states have call predecessors, (102), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2021-11-13 02:46:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:11,050 INFO L93 Difference]: Finished difference Result 60173 states and 89958 transitions. [2021-11-13 02:46:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:46:11,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 17.88888888888889) internal successors, (161), 11 states have internal predecessors, (161), 4 states have call successors, (102), 2 states have call predecessors, (102), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) Word has length 654 [2021-11-13 02:46:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:11,370 INFO L225 Difference]: With dead ends: 60173 [2021-11-13 02:46:11,370 INFO L226 Difference]: Without dead ends: 30134 [2021-11-13 02:46:11,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3922 GetRequests, 3909 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:46:11,483 INFO L933 BasicCegarLoop]: 3033 mSDtfsCounter, 14 mSDsluCounter, 15043 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11450.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18076 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.28ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11646.90ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:11,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18076 Invalid, 446 Unknown, 0 Unchecked, 23.28ms Time], IncrementalHoareTripleChecker [71 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 11646.90ms Time] [2021-11-13 02:46:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30134 states. [2021-11-13 02:46:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30134 to 30094. [2021-11-13 02:46:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30094 states, 23707 states have (on average 1.4526089340701058) internal successors, (34437), 24351 states have internal predecessors, (34437), 4958 states have call successors, (4958), 1411 states have call predecessors, (4958), 1428 states have return successors, (5083), 4769 states have call predecessors, (5083), 4952 states have call successors, (5083) [2021-11-13 02:46:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30094 states to 30094 states and 44478 transitions. [2021-11-13 02:46:12,934 INFO L78 Accepts]: Start accepts. Automaton has 30094 states and 44478 transitions. Word has length 654 [2021-11-13 02:46:12,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:12,935 INFO L470 AbstractCegarLoop]: Abstraction has 30094 states and 44478 transitions. [2021-11-13 02:46:12,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 17.88888888888889) internal successors, (161), 11 states have internal predecessors, (161), 4 states have call successors, (102), 2 states have call predecessors, (102), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2021-11-13 02:46:12,936 INFO L276 IsEmpty]: Start isEmpty. Operand 30094 states and 44478 transitions. [2021-11-13 02:46:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2021-11-13 02:46:12,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:12,966 INFO L514 BasicCegarLoop]: trace histogram [68, 34, 34, 34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-11-13 02:46:13,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:13,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:13,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:13,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:46:13,591 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:46:13,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 300942206, now seen corresponding path program 2 times [2021-11-13 02:46:13,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:13,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159276342] [2021-11-13 02:46:13,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:46:13,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:13,597 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:46:47,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:46:47,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:46:48,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:46:48,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10281 backedges. 785 proven. 3 refuted. 0 times theorem prover too weak. 9493 trivial. 0 not checked. [2021-11-13 02:47:06,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10281 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 9783 trivial. 0 not checked. [2021-11-13 02:47:18,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:18,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159276342] [2021-11-13 02:47:18,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159276342] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:18,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [101762939] [2021-11-13 02:47:18,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:47:18,820 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:47:18,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:47:18,833 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:47:18,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 02:49:01,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:49:01,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:49:01,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:49:01,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:49:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10281 backedges. 785 proven. 3 refuted. 0 times theorem prover too weak. 9493 trivial. 0 not checked. [2021-11-13 02:49:18,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:49:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10281 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 9783 trivial. 0 not checked. [2021-11-13 02:49:26,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [101762939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:49:26,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647096333] [2021-11-13 02:49:26,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:49:26,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:49:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:49:26,763 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:49:26,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebc259c-75ae-47b7-9f42-d9b44f810a1e/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 02:50:34,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:50:34,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:50:34,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:50:34,469 INFO L286 TraceCheckSpWp]: Computing forward predicates...