./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-32_7a-drivers--input--mousedev.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_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/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_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/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_060e6990-9586-4c90-96e7-56ab63d3d9de/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 d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:19,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:19,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:19,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:19,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:19,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:19,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:19,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:19,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:19,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:19,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:19,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:19,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:19,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:19,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:19,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:19,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:19,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:19,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:19,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:19,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:19,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:19,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:19,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:19,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:19,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:19,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:19,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:19,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:19,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:19,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:19,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:19,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:19,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:19,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:19,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:19,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:19,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:19,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:19,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:19,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:19,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:12:20,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:20,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:20,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:20,031 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:20,032 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:20,032 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:20,032 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:12:20,032 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:20,032 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:20,033 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:12:20,033 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:12:20,033 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:20,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:12:20,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:12:20,034 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:12:20,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:20,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:12:20,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:20,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:20,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:20,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:20,035 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:20,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:20,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:20,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:20,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:20,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:20,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:20,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:20,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:20,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:20,037 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:12:20,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:12:20,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:20,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:20,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:20,038 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_060e6990-9586-4c90-96e7-56ab63d3d9de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2021-11-07 01:12:20,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:20,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:20,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:20,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:20,346 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:20,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 01:12:20,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/39bd0a224/b8487d77a0a7478eab5d861d9b579bc5/FLAG2f518df6b [2021-11-07 01:12:21,227 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:21,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 01:12:21,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/39bd0a224/b8487d77a0a7478eab5d861d9b579bc5/FLAG2f518df6b [2021-11-07 01:12:21,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/39bd0a224/b8487d77a0a7478eab5d861d9b579bc5 [2021-11-07 01:12:21,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:21,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:21,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:21,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:21,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:21,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:21" (1/1) ... [2021-11-07 01:12:21,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e35945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:21, skipping insertion in model container [2021-11-07 01:12:21,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:21" (1/1) ... [2021-11-07 01:12:21,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:21,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:22,910 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 01:12:23,017 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 01:12:23,026 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 01:12:23,050 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 01:12:23,076 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 01:12:23,083 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 01:12:23,089 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 01:12:23,093 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 01:12:23,125 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 01:12:23,189 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 01:12:23,190 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 01:12:23,275 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_060e6990-9586-4c90-96e7-56ab63d3d9de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-07 01:12:23,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:23,455 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 01:12:23,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17bac297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:23, skipping insertion in model container [2021-11-07 01:12:23,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:23,456 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:12:23,460 INFO L168 Benchmark]: Toolchain (without parser) took 1700.59 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 51.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:23,461 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:12:23,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1696.50 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 51.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:23,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1696.50 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 51.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3385]: 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_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/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_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/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_060e6990-9586-4c90-96e7-56ab63d3d9de/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 d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:25,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:25,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:25,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:25,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:25,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:25,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:25,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:25,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:25,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:25,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:25,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:25,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:25,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:25,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:25,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:25,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:25,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:25,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:25,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:25,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:25,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:25,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:25,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:25,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:25,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:25,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:25,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:25,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:25,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:25,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:25,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:25,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:25,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:25,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:25,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:25,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:25,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:25,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:25,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:25,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:25,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:12:25,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:25,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:25,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:25,830 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:25,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:25,831 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:25,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:25,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:25,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:25,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:25,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:25,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:25,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:25,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:25,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:25,836 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:12:25,837 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:12:25,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:25,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:25,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:25,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:25,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:12:25,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:25,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:25,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:25,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:25,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:25,840 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:12:25,840 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:25,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:25,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:25,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:25,841 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_060e6990-9586-4c90-96e7-56ab63d3d9de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2021-11-07 01:12:26,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:26,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:26,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:26,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:26,294 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:26,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 01:12:26,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/556225594/6dace4948e414d3fb8b1d23a11c71893/FLAG585c50229 [2021-11-07 01:12:27,251 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:27,252 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 01:12:27,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/556225594/6dace4948e414d3fb8b1d23a11c71893/FLAG585c50229 [2021-11-07 01:12:27,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/data/556225594/6dace4948e414d3fb8b1d23a11c71893 [2021-11-07 01:12:27,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:27,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:27,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:27,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:27,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:27,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:27" (1/1) ... [2021-11-07 01:12:27,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@926642a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:27, skipping insertion in model container [2021-11-07 01:12:27,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:27" (1/1) ... [2021-11-07 01:12:27,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:27,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:28,760 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_060e6990-9586-4c90-96e7-56ab63d3d9de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-07 01:12:28,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:28,943 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:12:29,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:29,295 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_060e6990-9586-4c90-96e7-56ab63d3d9de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-07 01:12:29,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:29,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:12:29,636 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_060e6990-9586-4c90-96e7-56ab63d3d9de/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-07 01:12:29,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:29,839 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:12:29,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29 WrapperNode [2021-11-07 01:12:29,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:29,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:29,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:12:29,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:12:29,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:29,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:30,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:12:30,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:12:30,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:12:30,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:30,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:31,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:12:31,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:12:31,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:12:31,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:12:31,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (1/1) ... [2021-11-07 01:12:31,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:31,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:12:31,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:12:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:12:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:12:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:12:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:12:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:12:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:12:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:12:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:12:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:12:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:12:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:12:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:12:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:12:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:12:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:12:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:12:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:12:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:12:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:12:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:15:11,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:15:11,543 INFO L299 CfgBuilder]: Removed 2088 assume(true) statements. [2021-11-07 01:15:11,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:11 BoogieIcfgContainer [2021-11-07 01:15:11,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:15:11,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:15:11,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:15:11,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:15:11,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:12:27" (1/3) ... [2021-11-07 01:15:11,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdd5a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:11, skipping insertion in model container [2021-11-07 01:15:11,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:29" (2/3) ... [2021-11-07 01:15:11,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdd5a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:11, skipping insertion in model container [2021-11-07 01:15:11,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:11" (3/3) ... [2021-11-07 01:15:11,559 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 01:15:11,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:15:11,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-07 01:15:11,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:15:11,645 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:15:11,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-07 01:15:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:15:11,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:11,718 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] [2021-11-07 01:15:11,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -571058910, now seen corresponding path program 1 times [2021-11-07 01:15:11,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:11,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354247133] [2021-11-07 01:15:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:11,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:11,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:11,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:11,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:15:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:13,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:15:13,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:13,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:13,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:13,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354247133] [2021-11-07 01:15:13,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354247133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:13,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:13,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:15:13,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419218440] [2021-11-07 01:15:13,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:15:13,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:15:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:15:13,725 INFO L87 Difference]: Start difference. First operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:13,901 INFO L93 Difference]: Finished difference Result 5234 states and 7875 transitions. [2021-11-07 01:15:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:15:13,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2021-11-07 01:15:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:13,940 INFO L225 Difference]: With dead ends: 5234 [2021-11-07 01:15:13,940 INFO L226 Difference]: Without dead ends: 2611 [2021-11-07 01:15:13,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:15:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-07 01:15:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-07 01:15:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2569 states have (on average 1.5021409108602568) internal successors, (3859), 2610 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3859 transitions. [2021-11-07 01:15:14,108 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3859 transitions. Word has length 71 [2021-11-07 01:15:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:14,109 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3859 transitions. [2021-11-07 01:15:14,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3859 transitions. [2021-11-07 01:15:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:15:14,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:14,119 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] [2021-11-07 01:15:14,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:15:14,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:14,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1311868076, now seen corresponding path program 1 times [2021-11-07 01:15:14,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:14,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559683464] [2021-11-07 01:15:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:14,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:14,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:14,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:15:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:15,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:15:15,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:16,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:16,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:16,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559683464] [2021-11-07 01:15:16,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559683464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:16,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:16,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:16,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477675478] [2021-11-07 01:15:16,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:16,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:16,254 INFO L87 Difference]: Start difference. First operand 2611 states and 3859 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:17,714 INFO L93 Difference]: Finished difference Result 5213 states and 7735 transitions. [2021-11-07 01:15:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:17,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 71 [2021-11-07 01:15:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:17,732 INFO L225 Difference]: With dead ends: 5213 [2021-11-07 01:15:17,732 INFO L226 Difference]: Without dead ends: 2638 [2021-11-07 01:15:17,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-11-07 01:15:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2638. [2021-11-07 01:15:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2596 states have (on average 1.4969183359013867) internal successors, (3886), 2637 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3886 transitions. [2021-11-07 01:15:17,815 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3886 transitions. Word has length 71 [2021-11-07 01:15:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:17,816 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 3886 transitions. [2021-11-07 01:15:17,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3886 transitions. [2021-11-07 01:15:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:15:17,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:17,822 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:17,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:18,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:18,047 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1544932942, now seen corresponding path program 1 times [2021-11-07 01:15:18,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:18,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685276825] [2021-11-07 01:15:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:18,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:18,051 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:18,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:15:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:19,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:19,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:19,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:20,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:20,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685276825] [2021-11-07 01:15:20,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685276825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:20,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1550202750] [2021-11-07 01:15:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:20,403 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:20,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:20,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:15:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:21,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:21,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:22,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:22,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1550202750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:22,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:22,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:22,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32637913] [2021-11-07 01:15:22,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:22,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:22,275 INFO L87 Difference]: Start difference. First operand 2638 states and 3886 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:22,699 INFO L93 Difference]: Finished difference Result 5871 states and 8566 transitions. [2021-11-07 01:15:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:22,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 86 [2021-11-07 01:15:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:22,721 INFO L225 Difference]: With dead ends: 5871 [2021-11-07 01:15:22,721 INFO L226 Difference]: Without dead ends: 3310 [2021-11-07 01:15:22,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2021-11-07 01:15:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3222. [2021-11-07 01:15:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3180 states have (on average 1.4767295597484276) internal successors, (4696), 3221 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4696 transitions. [2021-11-07 01:15:22,824 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4696 transitions. Word has length 86 [2021-11-07 01:15:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:22,824 INFO L470 AbstractCegarLoop]: Abstraction has 3222 states and 4696 transitions. [2021-11-07 01:15:22,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4696 transitions. [2021-11-07 01:15:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 01:15:22,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:22,827 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:22,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:23,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:23,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:23,243 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 62599894, now seen corresponding path program 1 times [2021-11-07 01:15:23,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:23,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987828482] [2021-11-07 01:15:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:23,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:23,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:23,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:15:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:24,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:24,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:25,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:25,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:25,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987828482] [2021-11-07 01:15:25,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987828482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:25,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1917390899] [2021-11-07 01:15:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:25,633 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:25,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:25,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:15:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:27,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:27,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:27,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:28,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1917390899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:28,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:28,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:28,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960082565] [2021-11-07 01:15:28,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:28,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:28,116 INFO L87 Difference]: Start difference. First operand 3222 states and 4696 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:28,632 INFO L93 Difference]: Finished difference Result 9097 states and 13457 transitions. [2021-11-07 01:15:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:28,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 89 [2021-11-07 01:15:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:28,668 INFO L225 Difference]: With dead ends: 9097 [2021-11-07 01:15:28,669 INFO L226 Difference]: Without dead ends: 5951 [2021-11-07 01:15:28,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2021-11-07 01:15:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 5884. [2021-11-07 01:15:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5844 states have (on average 1.49435318275154) internal successors, (8733), 5883 states have internal predecessors, (8733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8733 transitions. [2021-11-07 01:15:28,880 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8733 transitions. Word has length 89 [2021-11-07 01:15:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:28,881 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8733 transitions. [2021-11-07 01:15:28,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8733 transitions. [2021-11-07 01:15:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 01:15:28,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:28,889 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:28,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:29,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:29,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:29,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1822569765, now seen corresponding path program 1 times [2021-11-07 01:15:29,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:29,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611349705] [2021-11-07 01:15:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:29,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:29,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:29,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:15:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:30,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:30,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:31,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:31,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:31,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611349705] [2021-11-07 01:15:31,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611349705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:31,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1249258669] [2021-11-07 01:15:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:31,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:31,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:31,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:31,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:15:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:33,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:33,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:33,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:33,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1249258669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:33,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:33,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:33,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720424867] [2021-11-07 01:15:33,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:33,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:33,364 INFO L87 Difference]: Start difference. First operand 5884 states and 8733 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:35,974 INFO L93 Difference]: Finished difference Result 11627 states and 17316 transitions. [2021-11-07 01:15:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 93 [2021-11-07 01:15:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:36,011 INFO L225 Difference]: With dead ends: 11627 [2021-11-07 01:15:36,011 INFO L226 Difference]: Without dead ends: 5820 [2021-11-07 01:15:36,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-11-07 01:15:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5793. [2021-11-07 01:15:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5767 states have (on average 1.4900294780648518) internal successors, (8593), 5792 states have internal predecessors, (8593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8593 transitions. [2021-11-07 01:15:36,227 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8593 transitions. Word has length 93 [2021-11-07 01:15:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:36,228 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8593 transitions. [2021-11-07 01:15:36,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8593 transitions. [2021-11-07 01:15:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:15:36,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:36,231 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:36,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:36,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:15:36,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:36,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1141620748, now seen corresponding path program 1 times [2021-11-07 01:15:36,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:36,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928801278] [2021-11-07 01:15:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:36,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:36,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:36,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:36,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:15:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:38,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:38,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:38,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:39,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:39,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928801278] [2021-11-07 01:15:39,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928801278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:39,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1489771573] [2021-11-07 01:15:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:39,092 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:39,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:39,093 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:39,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:15:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:40,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:40,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:40,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:40,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1489771573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:40,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:40,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:40,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704474004] [2021-11-07 01:15:40,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:40,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:40,983 INFO L87 Difference]: Start difference. First operand 5793 states and 8593 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:41,604 INFO L93 Difference]: Finished difference Result 15502 states and 23238 transitions. [2021-11-07 01:15:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:41,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-07 01:15:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:41,666 INFO L225 Difference]: With dead ends: 15502 [2021-11-07 01:15:41,669 INFO L226 Difference]: Without dead ends: 9786 [2021-11-07 01:15:41,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9786 states. [2021-11-07 01:15:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9786 to 9579. [2021-11-07 01:15:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 9553 states have (on average 1.518580550612373) internal successors, (14507), 9578 states have internal predecessors, (14507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 14507 transitions. [2021-11-07 01:15:41,984 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 14507 transitions. Word has length 98 [2021-11-07 01:15:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:41,985 INFO L470 AbstractCegarLoop]: Abstraction has 9579 states and 14507 transitions. [2021-11-07 01:15:41,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 14507 transitions. [2021-11-07 01:15:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 01:15:41,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:41,990 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:42,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:42,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:42,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:42,415 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1573383572, now seen corresponding path program 1 times [2021-11-07 01:15:42,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:42,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020762933] [2021-11-07 01:15:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:42,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:42,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:42,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:15:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:44,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2065 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:44,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:44,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:44,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:44,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020762933] [2021-11-07 01:15:44,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020762933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:44,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1525560688] [2021-11-07 01:15:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:44,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:44,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:44,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:44,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:15:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:46,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2065 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:46,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:47,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:47,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1525560688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:47,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:47,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:47,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257965971] [2021-11-07 01:15:47,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:47,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:47,670 INFO L87 Difference]: Start difference. First operand 9579 states and 14507 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:47,798 INFO L93 Difference]: Finished difference Result 9579 states and 14507 transitions. [2021-11-07 01:15:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 104 [2021-11-07 01:15:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:47,822 INFO L225 Difference]: With dead ends: 9579 [2021-11-07 01:15:47,822 INFO L226 Difference]: Without dead ends: 9577 [2021-11-07 01:15:47,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:47,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2021-11-07 01:15:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 9577. [2021-11-07 01:15:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9577 states, 9552 states have (on average 1.518425460636516) internal successors, (14504), 9576 states have internal predecessors, (14504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 14504 transitions. [2021-11-07 01:15:48,148 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 14504 transitions. Word has length 104 [2021-11-07 01:15:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:48,149 INFO L470 AbstractCegarLoop]: Abstraction has 9577 states and 14504 transitions. [2021-11-07 01:15:48,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 14504 transitions. [2021-11-07 01:15:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 01:15:48,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:48,151 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:48,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:48,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:48,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:48,575 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1530234529, now seen corresponding path program 1 times [2021-11-07 01:15:48,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:48,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281882720] [2021-11-07 01:15:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:48,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:48,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:48,578 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:48,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:15:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:50,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:50,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:51,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:51,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281882720] [2021-11-07 01:15:51,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281882720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:51,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1682952662] [2021-11-07 01:15:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:51,349 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:51,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:51,350 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:51,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:15:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:53,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2066 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:53,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:53,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:15:54,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1682952662] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:54,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:15:54,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:15:54,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636125798] [2021-11-07 01:15:54,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:15:54,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:15:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:54,266 INFO L87 Difference]: Start difference. First operand 9577 states and 14504 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:54,407 INFO L93 Difference]: Finished difference Result 9577 states and 14504 transitions. [2021-11-07 01:15:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:15:54,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 105 [2021-11-07 01:15:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:54,430 INFO L225 Difference]: With dead ends: 9577 [2021-11-07 01:15:54,430 INFO L226 Difference]: Without dead ends: 9575 [2021-11-07 01:15:54,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:15:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2021-11-07 01:15:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 9575. [2021-11-07 01:15:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9575 states, 9551 states have (on average 1.5182703381844833) internal successors, (14501), 9574 states have internal predecessors, (14501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:54,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9575 states to 9575 states and 14501 transitions. [2021-11-07 01:15:54,804 INFO L78 Accepts]: Start accepts. Automaton has 9575 states and 14501 transitions. Word has length 105 [2021-11-07 01:15:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:54,804 INFO L470 AbstractCegarLoop]: Abstraction has 9575 states and 14501 transitions. [2021-11-07 01:15:54,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 9575 states and 14501 transitions. [2021-11-07 01:15:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:15:54,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:54,806 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:54,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:55,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:15:55,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:55,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:15:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash -192614186, now seen corresponding path program 1 times [2021-11-07 01:15:55,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:55,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928742199] [2021-11-07 01:15:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:55,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:55,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:55,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:55,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:15:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:56,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 2067 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:15:56,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:57,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:15:57,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:57,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928742199] [2021-11-07 01:15:57,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928742199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:57,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [360483887] [2021-11-07 01:15:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:57,899 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:57,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:15:57,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:15:57,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:15:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:59,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:59,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:00,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:00,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [360483887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:00,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:16:00,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:16:00,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260191873] [2021-11-07 01:16:00,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:16:00,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:16:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:16:00,967 INFO L87 Difference]: Start difference. First operand 9575 states and 14501 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:01,168 INFO L93 Difference]: Finished difference Result 9575 states and 14501 transitions. [2021-11-07 01:16:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:01,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 106 [2021-11-07 01:16:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:01,189 INFO L225 Difference]: With dead ends: 9575 [2021-11-07 01:16:01,190 INFO L226 Difference]: Without dead ends: 9542 [2021-11-07 01:16:01,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:16:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2021-11-07 01:16:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 9542. [2021-11-07 01:16:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9519 states have (on average 1.51864691669293) internal successors, (14456), 9541 states have internal predecessors, (14456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 14456 transitions. [2021-11-07 01:16:01,521 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 14456 transitions. Word has length 106 [2021-11-07 01:16:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:01,522 INFO L470 AbstractCegarLoop]: Abstraction has 9542 states and 14456 transitions. [2021-11-07 01:16:01,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 14456 transitions. [2021-11-07 01:16:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 01:16:01,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:01,525 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:01,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:01,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:01,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:01,947 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:16:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1512810277, now seen corresponding path program 1 times [2021-11-07 01:16:01,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:01,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526864835] [2021-11-07 01:16:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:01,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:01,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:01,951 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:01,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:16:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:03,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:03,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:16:04,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:16:04,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:04,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526864835] [2021-11-07 01:16:04,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526864835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:04,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299298355] [2021-11-07 01:16:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:04,921 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:04,922 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:04,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:16:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:06,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:06,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:07,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:07,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1299298355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:07,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:16:07,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:16:07,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885905405] [2021-11-07 01:16:07,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:07,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:07,581 INFO L87 Difference]: Start difference. First operand 9542 states and 14456 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:10,258 INFO L93 Difference]: Finished difference Result 21559 states and 32314 transitions. [2021-11-07 01:16:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:10,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 120 [2021-11-07 01:16:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:10,284 INFO L225 Difference]: With dead ends: 21559 [2021-11-07 01:16:10,284 INFO L226 Difference]: Without dead ends: 12094 [2021-11-07 01:16:10,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12094 states. [2021-11-07 01:16:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12094 to 11938. [2021-11-07 01:16:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11938 states, 11915 states have (on average 1.4905581200167857) internal successors, (17760), 11937 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11938 states to 11938 states and 17760 transitions. [2021-11-07 01:16:10,806 INFO L78 Accepts]: Start accepts. Automaton has 11938 states and 17760 transitions. Word has length 120 [2021-11-07 01:16:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:10,807 INFO L470 AbstractCegarLoop]: Abstraction has 11938 states and 17760 transitions. [2021-11-07 01:16:10,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 11938 states and 17760 transitions. [2021-11-07 01:16:10,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 01:16:10,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:10,812 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:10,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:11,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:11,226 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:16:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1320094777, now seen corresponding path program 1 times [2021-11-07 01:16:11,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:11,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940880709] [2021-11-07 01:16:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:11,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:11,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:11,229 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:11,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:16:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:13,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:13,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:13,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:14,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:14,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940880709] [2021-11-07 01:16:14,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940880709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:14,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [745429429] [2021-11-07 01:16:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:14,449 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:14,451 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:14,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:16:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:16,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:16,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:16,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:17,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [745429429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:17,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:16:17,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:16:17,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244597995] [2021-11-07 01:16:17,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:16:17,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:16:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:16:17,173 INFO L87 Difference]: Start difference. First operand 11938 states and 17760 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:19,810 INFO L93 Difference]: Finished difference Result 23803 states and 35440 transitions. [2021-11-07 01:16:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 136 [2021-11-07 01:16:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:19,831 INFO L225 Difference]: With dead ends: 23803 [2021-11-07 01:16:19,831 INFO L226 Difference]: Without dead ends: 11934 [2021-11-07 01:16:19,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:16:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11934 states. [2021-11-07 01:16:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11934 to 10859. [2021-11-07 01:16:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 10836 states have (on average 1.5165190107050572) internal successors, (16433), 10858 states have internal predecessors, (16433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 16433 transitions. [2021-11-07 01:16:20,240 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 16433 transitions. Word has length 136 [2021-11-07 01:16:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:20,240 INFO L470 AbstractCegarLoop]: Abstraction has 10859 states and 16433 transitions. [2021-11-07 01:16:20,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 16433 transitions. [2021-11-07 01:16:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 01:16:20,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:20,245 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:20,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:20,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:20,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:20,660 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:16:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 535714528, now seen corresponding path program 1 times [2021-11-07 01:16:20,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:20,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285994036] [2021-11-07 01:16:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:20,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:20,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:20,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:20,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:16:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:22,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:23,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:24,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:24,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285994036] [2021-11-07 01:16:24,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285994036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:24,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [565887845] [2021-11-07 01:16:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:24,255 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:24,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:24,262 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:24,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:16:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:26,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:26,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:26,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:16:27,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [565887845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:27,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:16:27,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:16:27,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791767403] [2021-11-07 01:16:27,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:27,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:27,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:27,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:27,359 INFO L87 Difference]: Start difference. First operand 10859 states and 16433 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:30,435 INFO L93 Difference]: Finished difference Result 29793 states and 45530 transitions. [2021-11-07 01:16:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 140 [2021-11-07 01:16:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:30,465 INFO L225 Difference]: With dead ends: 29793 [2021-11-07 01:16:30,465 INFO L226 Difference]: Without dead ends: 19011 [2021-11-07 01:16:30,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19011 states. [2021-11-07 01:16:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19011 to 18705. [2021-11-07 01:16:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18705 states, 18682 states have (on average 1.5377903864682583) internal successors, (28729), 18704 states have internal predecessors, (28729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18705 states to 18705 states and 28729 transitions. [2021-11-07 01:16:31,285 INFO L78 Accepts]: Start accepts. Automaton has 18705 states and 28729 transitions. Word has length 140 [2021-11-07 01:16:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:31,285 INFO L470 AbstractCegarLoop]: Abstraction has 18705 states and 28729 transitions. [2021-11-07 01:16:31,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 18705 states and 28729 transitions. [2021-11-07 01:16:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 01:16:31,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:31,292 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:31,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:31,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:31,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:31,707 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:16:31,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash -144840383, now seen corresponding path program 1 times [2021-11-07 01:16:31,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:31,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808257244] [2021-11-07 01:16:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:31,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:31,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:31,710 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:16:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:34,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:16:34,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:16:35,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:35,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808257244] [2021-11-07 01:16:35,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808257244] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:35,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1329888406] [2021-11-07 01:16:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:35,441 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:35,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:35,443 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:35,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:16:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:39,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:39,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:16:40,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:16:40,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1329888406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:40,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558627315] [2021-11-07 01:16:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:40,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:16:40,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:16:40,826 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:16:40,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:16:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:45,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:16:45,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:16:46,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:16:46,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558627315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:46,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:16:46,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 6] imperfect sequences [5, 5, 5, 5] total 13 [2021-11-07 01:16:46,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010600506] [2021-11-07 01:16:46,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:16:46,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:16:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:16:46,859 INFO L87 Difference]: Start difference. First operand 18705 states and 28729 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:49,946 INFO L93 Difference]: Finished difference Result 114652 states and 177388 transitions. [2021-11-07 01:16:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:16:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 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 146 [2021-11-07 01:16:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:50,090 INFO L225 Difference]: With dead ends: 114652 [2021-11-07 01:16:50,090 INFO L226 Difference]: Without dead ends: 96024 [2021-11-07 01:16:50,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:16:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96024 states. [2021-11-07 01:16:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96024 to 18689. [2021-11-07 01:16:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18689 states, 18666 states have (on average 1.5373941926497374) internal successors, (28697), 18688 states have internal predecessors, (28697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18689 states to 18689 states and 28697 transitions. [2021-11-07 01:16:51,699 INFO L78 Accepts]: Start accepts. Automaton has 18689 states and 28697 transitions. Word has length 146 [2021-11-07 01:16:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:51,699 INFO L470 AbstractCegarLoop]: Abstraction has 18689 states and 28697 transitions. [2021-11-07 01:16:51,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 18689 states and 28697 transitions. [2021-11-07 01:16:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 01:16:51,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:51,704 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:51,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-07 01:16:51,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:52,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-07 01:16:52,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:52,331 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:16:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1473292725, now seen corresponding path program 1 times [2021-11-07 01:16:52,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:52,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917227918] [2021-11-07 01:16:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:52,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:52,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:52,335 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:52,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:16:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:54,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:16:54,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:16:55,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:16:56,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:56,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917227918] [2021-11-07 01:16:56,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917227918] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:56,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1415625549] [2021-11-07 01:16:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:56,226 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:56,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:56,227 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:56,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 01:17:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:00,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:17:00,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:17:01,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:17:01,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1415625549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:01,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495060652] [2021-11-07 01:17:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:01,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:01,866 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:01,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 01:17:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:17:07,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:17:09,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:17:11,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495060652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:11,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:17:11,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [5, 5, 5, 5] total 26 [2021-11-07 01:17:11,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397690314] [2021-11-07 01:17:11,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:17:11,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:17:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:17:11,003 INFO L87 Difference]: Start difference. First operand 18689 states and 28697 transitions. Second operand has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:01,819 INFO L93 Difference]: Finished difference Result 252334 states and 390492 transitions. [2021-11-07 01:18:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 01:18:01,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 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 146 [2021-11-07 01:18:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:02,476 INFO L225 Difference]: With dead ends: 252334 [2021-11-07 01:18:02,476 INFO L226 Difference]: Without dead ends: 233690 [2021-11-07 01:18:02,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=906, Invalid=3924, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 01:18:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233690 states. [2021-11-07 01:18:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233690 to 18311. [2021-11-07 01:18:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18311 states, 18288 states have (on average 1.543908573928259) internal successors, (28235), 18310 states have internal predecessors, (28235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18311 states to 18311 states and 28235 transitions. [2021-11-07 01:18:06,530 INFO L78 Accepts]: Start accepts. Automaton has 18311 states and 28235 transitions. Word has length 146 [2021-11-07 01:18:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:06,530 INFO L470 AbstractCegarLoop]: Abstraction has 18311 states and 28235 transitions. [2021-11-07 01:18:06,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 18311 states and 28235 transitions. [2021-11-07 01:18:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 01:18:06,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:06,537 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:06,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:06,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:07,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:07,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:07,161 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:18:07,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:07,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1435517441, now seen corresponding path program 1 times [2021-11-07 01:18:07,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:07,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79834345] [2021-11-07 01:18:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:07,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:07,165 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:07,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-07 01:18:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:10,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:18:10,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:18:10,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:18:11,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:11,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79834345] [2021-11-07 01:18:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79834345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:18:11,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892802935] [2021-11-07 01:18:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:11,606 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:11,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:18:11,619 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:18:11,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-07 01:18:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:16,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:18:16,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:18:17,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:18:17,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1892802935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:18:17,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300421330] [2021-11-07 01:18:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:17,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:18:17,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:18:17,869 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:18:17,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 01:18:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:23,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:18:23,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 01:18:24,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300421330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:18:24,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:18:24,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:18:24,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815506601] [2021-11-07 01:18:24,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:18:24,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:18:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:18:24,516 INFO L87 Difference]: Start difference. First operand 18311 states and 28235 transitions. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:31,968 INFO L93 Difference]: Finished difference Result 36800 states and 56863 transitions. [2021-11-07 01:18:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:18:31,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 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 159 [2021-11-07 01:18:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:31,990 INFO L225 Difference]: With dead ends: 36800 [2021-11-07 01:18:31,990 INFO L226 Difference]: Without dead ends: 18527 [2021-11-07 01:18:32,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2021-11-07 01:18:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18527. [2021-11-07 01:18:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18527 states, 18504 states have (on average 1.5375594466061393) internal successors, (28451), 18526 states have internal predecessors, (28451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18527 states to 18527 states and 28451 transitions. [2021-11-07 01:18:34,081 INFO L78 Accepts]: Start accepts. Automaton has 18527 states and 28451 transitions. Word has length 159 [2021-11-07 01:18:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:34,081 INFO L470 AbstractCegarLoop]: Abstraction has 18527 states and 28451 transitions. [2021-11-07 01:18:34,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18527 states and 28451 transitions. [2021-11-07 01:18:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-07 01:18:34,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:34,087 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-07 01:18:34,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:34,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:34,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2021-11-07 01:18:34,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:34,703 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 01:18:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1449162495, now seen corresponding path program 2 times [2021-11-07 01:18:34,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:34,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230419739] [2021-11-07 01:18:34,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:18:34,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:34,707 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:34,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060e6990-9586-4c90-96e7-56ab63d3d9de/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-07 01:18:37,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:18:37,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:18:37,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:18:37,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-07 01:18:38,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-07 01:18:40,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:40,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230419739] [2021-11-07 01:18:40,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230419739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:40,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:40,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-07 01:18:40,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042222208] [2021-11-07 01:18:40,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:18:40,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:18:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:18:40,106 INFO L87 Difference]: Start difference. First operand 18527 states and 28451 transitions. Second operand has 22 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 22 states have internal predecessors, (160), 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)