./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/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_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:52:21,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:52:21,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:52:21,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:52:21,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:52:21,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:52:21,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:52:21,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:52:21,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:52:21,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:52:21,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:52:21,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:52:21,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:52:21,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:52:21,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:52:21,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:52:21,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:52:21,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:52:21,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:52:21,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:52:21,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:52:21,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:52:21,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:52:21,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:52:21,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:52:21,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:52:21,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:52:21,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:52:21,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:52:21,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:52:21,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:52:21,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:52:21,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:52:21,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:52:21,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:52:21,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:52:21,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:52:21,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:52:21,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:52:21,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:52:21,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:52:21,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:52:21,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:52:21,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:52:21,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:52:21,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:52:21,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:52:21,396 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:52:21,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:52:21,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:52:21,397 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:52:21,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:52:21,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:52:21,398 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:52:21,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:52:21,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:52:21,398 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:52:21,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:52:21,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:52:21,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:52:21,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:52:21,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:52:21,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:52:21,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:52:21,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:52:21,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:52:21,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:52:21,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:52:21,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:52:21,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:52:21,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:52:21,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:52:21,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:52:21,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:52:21,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:52:21,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:52:21,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:52:21,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:52:21,406 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_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-07 01:52:21,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:52:21,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:52:21,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:52:21,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:52:21,776 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:52:21,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/../../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 [2021-11-07 01:52:21,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/a597573b6/35a428ac9a654d8f8fe01efec005ef26/FLAG18c325cfc [2021-11-07 01:52:22,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:52:22,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/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 [2021-11-07 01:52:22,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/a597573b6/35a428ac9a654d8f8fe01efec005ef26/FLAG18c325cfc [2021-11-07 01:52:23,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/a597573b6/35a428ac9a654d8f8fe01efec005ef26 [2021-11-07 01:52:23,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:52:23,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:52:23,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:23,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:52:23,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:52:23,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:23" (1/1) ... [2021-11-07 01:52:23,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541e2207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:23, skipping insertion in model container [2021-11-07 01:52:23,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:23" (1/1) ... [2021-11-07 01:52:23,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:52:23,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:52:24,856 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:52:25,752 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_c5106494-8118-4aed-9fb5-a32de9275af3/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] [2021-11-07 01:52:25,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:25,866 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:52:25,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b761196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:25, skipping insertion in model container [2021-11-07 01:52:25,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:25,867 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:52:25,870 INFO L168 Benchmark]: Toolchain (without parser) took 2567.77 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 58.6 MB in the beginning and 67.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:25,871 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:52:25,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2564.64 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 58.3 MB in the beginning and 67.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:52:25,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2564.64 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 58.3 MB in the beginning and 67.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 42.1 MB. Max. memory is 16.1 GB. * 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_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/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_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:52:28,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:52:28,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:52:28,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:52:28,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:52:28,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:52:28,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:52:28,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:52:28,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:52:28,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:52:28,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:52:28,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:52:28,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:52:28,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:52:28,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:52:28,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:52:28,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:52:28,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:52:28,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:52:28,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:52:28,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:52:28,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:52:28,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:52:28,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:52:28,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:52:28,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:52:28,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:52:28,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:52:28,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:52:28,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:52:28,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:52:28,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:52:28,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:52:28,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:52:28,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:52:28,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:52:28,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:52:28,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:52:28,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:52:28,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:52:28,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:52:28,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:52:28,719 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:52:28,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:52:28,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:52:28,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:52:28,721 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:52:28,721 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:52:28,721 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:52:28,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:52:28,721 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:52:28,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:52:28,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:52:28,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:52:28,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:52:28,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:52:28,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:52:28,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:52:28,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:52:28,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:52:28,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:52:28,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:52:28,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:52:28,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:52:28,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:52:28,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:52:28,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:52:28,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:52:28,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:52:28,726 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:52:28,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:28,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:52:28,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:52:28,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:52:28,727 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_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-07 01:52:29,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:52:29,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:52:29,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:52:29,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:52:29,256 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:52:29,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/../../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 [2021-11-07 01:52:29,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/f396d48eb/753d8448aa074df3b87b472d7e09fbe9/FLAG081ca0943 [2021-11-07 01:52:30,430 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:52:30,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/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 [2021-11-07 01:52:30,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/f396d48eb/753d8448aa074df3b87b472d7e09fbe9/FLAG081ca0943 [2021-11-07 01:52:30,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/data/f396d48eb/753d8448aa074df3b87b472d7e09fbe9 [2021-11-07 01:52:30,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:52:30,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:52:30,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:30,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:52:30,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:52:30,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:30" (1/1) ... [2021-11-07 01:52:30,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cee0f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:30, skipping insertion in model container [2021-11-07 01:52:30,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:30" (1/1) ... [2021-11-07 01:52:30,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:52:31,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:52:33,534 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_c5106494-8118-4aed-9fb5-a32de9275af3/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] [2021-11-07 01:52:33,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:33,667 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:52:33,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:52:34,342 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_c5106494-8118-4aed-9fb5-a32de9275af3/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] [2021-11-07 01:52:34,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:34,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:52:35,195 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_c5106494-8118-4aed-9fb5-a32de9275af3/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] [2021-11-07 01:52:35,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:52:35,391 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:52:35,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35 WrapperNode [2021-11-07 01:52:35,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:52:35,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:52:35,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:52:35,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:52:35,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:35,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:36,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:52:36,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:52:36,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:52:36,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:52:36,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:36,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:37,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:37,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:38,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:38,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:38,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:38,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:52:38,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:52:38,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:52:38,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:52:38,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (1/1) ... [2021-11-07 01:52:38,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:52:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:38,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:52:38,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:52:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-07 01:52:38,714 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-07 01:52:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:52:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:52:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:52:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:52:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:52:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:52:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-07 01:52:38,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-07 01:52:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-07 01:52:38,717 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-07 01:52:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:52:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:52:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:52:38,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:52:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:52:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:52:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:52:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:52:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:52:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:52:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:52:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:52:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-07 01:52:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-07 01:52:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:52:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:52:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-07 01:52:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-07 01:52:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:52:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:52:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:52:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:52:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-07 01:52:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-07 01:52:38,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:52:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:52:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:52:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:52:38,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:52:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-07 01:52:38,724 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-07 01:52:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:52:38,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:52:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:01:54,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:01:54,683 INFO L299 CfgBuilder]: Removed 3636 assume(true) statements. [2021-11-07 02:01:54,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:54 BoogieIcfgContainer [2021-11-07 02:01:54,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:01:54,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:01:54,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:01:54,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:01:54,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:52:30" (1/3) ... [2021-11-07 02:01:54,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2413257d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:54, skipping insertion in model container [2021-11-07 02:01:54,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:35" (2/3) ... [2021-11-07 02:01:54,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2413257d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:54, skipping insertion in model container [2021-11-07 02:01:54,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:54" (3/3) ... [2021-11-07 02:01:54,701 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-07 02:01:54,706 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:01:54,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-07 02:01:54,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:01:54,792 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:01:54,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-07 02:01:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-07 02:01:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 02:01:54,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:54,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:54,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:01:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1704911642, now seen corresponding path program 1 times [2021-11-07 02:01:55,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:55,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127648409] [2021-11-07 02:01:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:55,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:55,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:55,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:55,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:01:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:56,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:01:56,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:00,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:04,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:04,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127648409] [2021-11-07 02:02:04,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127648409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:04,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:04,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:02:04,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957047919] [2021-11-07 02:02:04,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:02:04,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:02:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:02:04,717 INFO L87 Difference]: Start difference. First operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:05,493 INFO L93 Difference]: Finished difference Result 18102 states and 27928 transitions. [2021-11-07 02:02:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:02:05,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-07 02:02:05,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:05,601 INFO L225 Difference]: With dead ends: 18102 [2021-11-07 02:02:05,601 INFO L226 Difference]: Without dead ends: 9044 [2021-11-07 02:02:05,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:02:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-11-07 02:02:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 9044. [2021-11-07 02:02:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9044 states, 8912 states have (on average 1.5263689407540395) internal successors, (13603), 8937 states have internal predecessors, (13603), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-07 02:02:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9044 states to 9044 states and 13811 transitions. [2021-11-07 02:02:06,175 INFO L78 Accepts]: Start accepts. Automaton has 9044 states and 13811 transitions. Word has length 156 [2021-11-07 02:02:06,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:06,176 INFO L470 AbstractCegarLoop]: Abstraction has 9044 states and 13811 transitions. [2021-11-07 02:02:06,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states and 13811 transitions. [2021-11-07 02:02:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 02:02:06,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:06,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:06,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:02:06,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:06,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:02:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:06,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2090191094, now seen corresponding path program 1 times [2021-11-07 02:02:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:06,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266455288] [2021-11-07 02:02:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:06,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:06,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:06,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:06,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:02:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:08,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:02:08,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:12,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:16,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:16,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266455288] [2021-11-07 02:02:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266455288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:16,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:16,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:02:16,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336875181] [2021-11-07 02:02:16,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:02:16,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:16,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:02:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:16,504 INFO L87 Difference]: Start difference. First operand 9044 states and 13811 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:23,238 INFO L93 Difference]: Finished difference Result 18088 states and 27657 transitions. [2021-11-07 02:02:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:02:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-07 02:02:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:23,316 INFO L225 Difference]: With dead ends: 18088 [2021-11-07 02:02:23,316 INFO L226 Difference]: Without dead ends: 9080 [2021-11-07 02:02:23,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2021-11-07 02:02:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 9080. [2021-11-07 02:02:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 8948 states have (on average 1.5242512293249888) internal successors, (13639), 8973 states have internal predecessors, (13639), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-07 02:02:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 13847 transitions. [2021-11-07 02:02:23,673 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 13847 transitions. Word has length 156 [2021-11-07 02:02:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:23,675 INFO L470 AbstractCegarLoop]: Abstraction has 9080 states and 13847 transitions. [2021-11-07 02:02:23,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 13847 transitions. [2021-11-07 02:02:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 02:02:23,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:23,681 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:02:23,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:23,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:23,905 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:02:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1811887274, now seen corresponding path program 1 times [2021-11-07 02:02:23,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:23,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114661119] [2021-11-07 02:02:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:23,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:23,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:23,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:23,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:02:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:26,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:02:26,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:02:31,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:02:37,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:37,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114661119] [2021-11-07 02:02:37,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114661119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:37,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174216224] [2021-11-07 02:02:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:37,859 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:37,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:37,873 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:37,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:02:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:39,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:39,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:02:50,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:03:00,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [174216224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:00,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:00,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:00,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422543215] [2021-11-07 02:03:00,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:00,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:00,485 INFO L87 Difference]: Start difference. First operand 9080 states and 13847 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:01,216 INFO L93 Difference]: Finished difference Result 26671 states and 40786 transitions. [2021-11-07 02:03:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-11-07 02:03:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:01,343 INFO L225 Difference]: With dead ends: 26671 [2021-11-07 02:03:01,343 INFO L226 Difference]: Without dead ends: 17765 [2021-11-07 02:03:01,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17765 states. [2021-11-07 02:03:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17765 to 17651. [2021-11-07 02:03:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17651 states, 17411 states have (on average 1.52863132502441) internal successors, (26615), 17442 states have internal predecessors, (26615), 204 states have call successors, (204), 16 states have call predecessors, (204), 16 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-11-07 02:03:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17651 states to 17651 states and 27023 transitions. [2021-11-07 02:03:02,000 INFO L78 Accepts]: Start accepts. Automaton has 17651 states and 27023 transitions. Word has length 192 [2021-11-07 02:03:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:02,004 INFO L470 AbstractCegarLoop]: Abstraction has 17651 states and 27023 transitions. [2021-11-07 02:03:02,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 17651 states and 27023 transitions. [2021-11-07 02:03:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-07 02:03:02,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:02,012 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:03:02,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:02,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:02,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:02,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:03:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash -425252689, now seen corresponding path program 1 times [2021-11-07 02:03:02,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:02,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518031306] [2021-11-07 02:03:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:02,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:02,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:02,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:02,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:03:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:04,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:04,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:03:10,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:03:16,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:16,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518031306] [2021-11-07 02:03:16,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518031306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:03:16,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [78227938] [2021-11-07 02:03:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:16,774 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:16,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:03:16,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:03:16,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:03:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:18,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:03:18,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:03:29,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:03:40,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [78227938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:40,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:40,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:40,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035609380] [2021-11-07 02:03:40,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:40,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:40,043 INFO L87 Difference]: Start difference. First operand 17651 states and 27023 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:43,115 INFO L93 Difference]: Finished difference Result 52567 states and 80616 transitions. [2021-11-07 02:03:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:43,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-11-07 02:03:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:43,281 INFO L225 Difference]: With dead ends: 52567 [2021-11-07 02:03:43,282 INFO L226 Difference]: Without dead ends: 35086 [2021-11-07 02:03:43,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35086 states. [2021-11-07 02:03:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35086 to 35022. [2021-11-07 02:03:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35022 states, 34562 states have (on average 1.5304091198426018) internal successors, (52894), 34605 states have internal predecessors, (52894), 408 states have call successors, (408), 32 states have call predecessors, (408), 32 states have return successors, (408), 396 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-07 02:03:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35022 states to 35022 states and 53710 transitions. [2021-11-07 02:03:44,773 INFO L78 Accepts]: Start accepts. Automaton has 35022 states and 53710 transitions. Word has length 194 [2021-11-07 02:03:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 35022 states and 53710 transitions. [2021-11-07 02:03:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 35022 states and 53710 transitions. [2021-11-07 02:03:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-07 02:03:44,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:44,783 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:03:44,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:45,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:45,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:45,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:03:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash 452915352, now seen corresponding path program 1 times [2021-11-07 02:03:45,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:45,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263348458] [2021-11-07 02:03:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:45,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:45,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:45,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:45,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:03:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:48,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:48,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:03:54,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:04:00,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:00,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263348458] [2021-11-07 02:04:00,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263348458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:00,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032260273] [2021-11-07 02:04:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:00,285 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:00,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:00,313 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:00,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:04:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:02,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:02,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:04:03,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:04:04,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032260273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:04,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:04,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:04,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598804673] [2021-11-07 02:04:04,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:04,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:04,564 INFO L87 Difference]: Start difference. First operand 35022 states and 53710 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:05,998 INFO L93 Difference]: Finished difference Result 100601 states and 154454 transitions. [2021-11-07 02:04:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:05,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-11-07 02:04:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:06,238 INFO L225 Difference]: With dead ends: 100601 [2021-11-07 02:04:06,239 INFO L226 Difference]: Without dead ends: 65753 [2021-11-07 02:04:06,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65753 states. [2021-11-07 02:04:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65753 to 35026. [2021-11-07 02:04:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35026 states, 34566 states have (on average 1.530347740554302) internal successors, (52898), 34609 states have internal predecessors, (52898), 408 states have call successors, (408), 32 states have call predecessors, (408), 32 states have return successors, (408), 396 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-07 02:04:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35026 states to 35026 states and 53714 transitions. [2021-11-07 02:04:07,564 INFO L78 Accepts]: Start accepts. Automaton has 35026 states and 53714 transitions. Word has length 200 [2021-11-07 02:04:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:07,565 INFO L470 AbstractCegarLoop]: Abstraction has 35026 states and 53714 transitions. [2021-11-07 02:04:07,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 35026 states and 53714 transitions. [2021-11-07 02:04:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-07 02:04:07,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:07,573 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:04:07,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:07,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:07,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:07,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:04:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 97456377, now seen corresponding path program 1 times [2021-11-07 02:04:07,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:07,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811729463] [2021-11-07 02:04:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:07,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:07,998 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:08,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:04:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:11,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:11,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:04:17,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:04:23,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:23,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811729463] [2021-11-07 02:04:23,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811729463] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:23,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391311370] [2021-11-07 02:04:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:23,905 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:23,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:23,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:04:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:26,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:26,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:04:28,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:04:29,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391311370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:29,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:29,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:04:29,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940692169] [2021-11-07 02:04:29,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:04:29,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:04:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:04:29,917 INFO L87 Difference]: Start difference. First operand 35026 states and 53714 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:40,683 INFO L93 Difference]: Finished difference Result 138686 states and 212968 transitions. [2021-11-07 02:04:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:04:40,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-11-07 02:04:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:41,235 INFO L225 Difference]: With dead ends: 138686 [2021-11-07 02:04:41,236 INFO L226 Difference]: Without dead ends: 103834 [2021-11-07 02:04:41,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:04:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103834 states. [2021-11-07 02:04:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103834 to 103726. [2021-11-07 02:04:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103726 states, 102394 states have (on average 1.5327265269449382) internal successors, (156942), 102485 states have internal predecessors, (156942), 1216 states have call successors, (1216), 96 states have call predecessors, (1216), 96 states have return successors, (1216), 1180 states have call predecessors, (1216), 1216 states have call successors, (1216) [2021-11-07 02:04:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103726 states to 103726 states and 159374 transitions. [2021-11-07 02:04:44,657 INFO L78 Accepts]: Start accepts. Automaton has 103726 states and 159374 transitions. Word has length 202 [2021-11-07 02:04:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:44,657 INFO L470 AbstractCegarLoop]: Abstraction has 103726 states and 159374 transitions. [2021-11-07 02:04:44,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 103726 states and 159374 transitions. [2021-11-07 02:04:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 02:04:44,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:44,669 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:44,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:44,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:45,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:45,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:04:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1447873219, now seen corresponding path program 1 times [2021-11-07 02:04:45,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:45,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076126812] [2021-11-07 02:04:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:45,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:45,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:45,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:45,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:04:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:47,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:47,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:04:53,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:05:00,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:00,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076126812] [2021-11-07 02:05:00,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076126812] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:00,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847685614] [2021-11-07 02:05:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:00,280 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:00,284 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:00,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:05:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:02,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:02,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:05:04,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 02:05:06,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [847685614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:06,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:06,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:06,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433827804] [2021-11-07 02:05:06,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:06,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:06,181 INFO L87 Difference]: Start difference. First operand 103726 states and 159374 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:09,318 INFO L93 Difference]: Finished difference Result 283968 states and 436318 transitions. [2021-11-07 02:05:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-07 02:05:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:10,053 INFO L225 Difference]: With dead ends: 283968 [2021-11-07 02:05:10,053 INFO L226 Difference]: Without dead ends: 180416 [2021-11-07 02:05:10,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180416 states. [2021-11-07 02:05:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180416 to 180395. [2021-11-07 02:05:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180395 states, 178231 states have (on average 1.5329600350107444) internal successors, (273221), 178382 states have internal predecessors, (273221), 1952 states have call successors, (1952), 192 states have call predecessors, (1952), 192 states have return successors, (1952), 1880 states have call predecessors, (1952), 1952 states have call successors, (1952) [2021-11-07 02:05:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180395 states to 180395 states and 277125 transitions. [2021-11-07 02:05:15,460 INFO L78 Accepts]: Start accepts. Automaton has 180395 states and 277125 transitions. Word has length 211 [2021-11-07 02:05:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:15,461 INFO L470 AbstractCegarLoop]: Abstraction has 180395 states and 277125 transitions. [2021-11-07 02:05:15,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 180395 states and 277125 transitions. [2021-11-07 02:05:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-07 02:05:15,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:15,497 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:15,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:15,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 02:05:15,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:15,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 02:05:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash -201930772, now seen corresponding path program 1 times [2021-11-07 02:05:15,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:15,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151248034] [2021-11-07 02:05:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:15,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:15,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:15,920 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:15,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5106494-8118-4aed-9fb5-a32de9275af3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:05:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:18,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:18,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 02:05:24,456 INFO L328 TraceCheckSpWp]: Computing backward predicates...