./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.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_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/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_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/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_a62afe67-a5ab-4496-b836-f2250afe42f0/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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:06:11,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:06:11,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:06:11,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:06:11,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:06:11,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:06:11,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:06:11,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:06:11,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:06:11,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:06:11,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:06:11,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:06:11,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:06:11,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:06:11,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:06:11,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:06:11,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:06:11,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:06:11,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:06:11,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:06:11,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:06:11,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:06:11,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:06:11,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:06:11,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:06:11,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:06:11,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:06:11,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:06:11,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:06:11,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:06:11,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:06:11,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:06:11,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:06:11,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:06:11,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:06:11,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:06:11,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:06:11,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:06:11,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:06:11,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:06:11,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:06:11,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:06:11,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:06:11,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:06:11,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:06:11,860 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:06:11,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:06:11,860 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:06:11,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:06:11,861 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:06:11,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:06:11,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:06:11,862 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:06:11,863 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:06:11,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:06:11,864 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:06:11,864 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:06:11,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:06:11,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:06:11,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:06:11,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:06:11,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:06:11,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:06:11,867 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:06:11,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:06:11,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:06:11,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:06:11,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:06:11,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:06:11,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:11,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:06:11,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:06:11,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:06:11,871 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:06:11,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:06:11,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:06:11,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:06:11,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:06:11,873 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_a62afe67-a5ab-4496-b836-f2250afe42f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-07 02:06:12,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:06:12,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:06:12,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:06:12,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:06:12,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:06:12,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-07 02:06:12,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/131b1025a/0ed885dea59041659e8c71dee5d678e4/FLAG9d212849a [2021-11-07 02:06:13,481 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:06:13,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-07 02:06:13,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/131b1025a/0ed885dea59041659e8c71dee5d678e4/FLAG9d212849a [2021-11-07 02:06:13,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/131b1025a/0ed885dea59041659e8c71dee5d678e4 [2021-11-07 02:06:13,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:06:13,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:06:13,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:13,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:06:13,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:06:13,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:13" (1/1) ... [2021-11-07 02:06:13,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67987bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:13, skipping insertion in model container [2021-11-07 02:06:13,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:13" (1/1) ... [2021-11-07 02:06:13,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:06:13,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:17,393 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-07 02:06:17,398 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-07 02:06:17,399 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-07 02:06:17,400 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-07 02:06:17,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:17,466 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 02:06:17,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ca9b17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:17, skipping insertion in model container [2021-11-07 02:06:17,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:17,467 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:06:17,470 INFO L168 Benchmark]: Toolchain (without parser) took 3713.03 ms. Allocated memory was 117.4 MB in the beginning and 157.3 MB in the end (delta: 39.8 MB). Free memory was 75.1 MB in the beginning and 68.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:17,470 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:06:17,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3709.81 ms. Allocated memory was 117.4 MB in the beginning and 157.3 MB in the end (delta: 39.8 MB). Free memory was 74.8 MB in the beginning and 68.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:17,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 117.4 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3709.81 ms. Allocated memory was 117.4 MB in the beginning and 157.3 MB in the end (delta: 39.8 MB). Free memory was 74.8 MB in the beginning and 68.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6024]: 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_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/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_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/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_a62afe67-a5ab-4496-b836-f2250afe42f0/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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:06:20,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:06:20,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:06:20,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:06:20,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:06:20,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:06:20,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:06:20,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:06:20,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:06:20,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:06:20,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:06:20,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:06:20,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:06:20,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:06:20,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:06:20,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:06:20,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:06:20,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:06:20,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:06:20,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:06:20,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:06:20,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:06:20,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:06:20,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:06:20,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:06:20,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:06:20,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:06:20,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:06:20,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:06:20,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:06:20,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:06:20,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:06:20,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:06:20,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:06:20,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:06:20,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:06:20,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:06:20,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:06:20,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:06:20,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:06:20,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:06:20,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:06:20,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:06:20,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:06:20,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:06:20,236 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:06:20,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:06:20,237 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:06:20,237 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:06:20,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:06:20,237 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:06:20,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:06:20,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:06:20,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:06:20,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:06:20,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:06:20,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:06:20,242 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:06:20,242 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:06:20,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:06:20,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:06:20,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:06:20,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:06:20,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:06:20,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:06:20,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:20,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:06:20,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:06:20,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:06:20,245 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:06:20,245 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:20,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:06:20,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:06:20,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:06:20,246 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_a62afe67-a5ab-4496-b836-f2250afe42f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-07 02:06:20,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:06:20,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:06:20,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:06:20,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:06:20,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:06:20,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-07 02:06:20,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/e859524c7/28689eed28574b9aae3ea4ad9f7ba8ae/FLAGe4cc3d649 [2021-11-07 02:06:22,046 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:06:22,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-07 02:06:22,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/e859524c7/28689eed28574b9aae3ea4ad9f7ba8ae/FLAGe4cc3d649 [2021-11-07 02:06:22,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/data/e859524c7/28689eed28574b9aae3ea4ad9f7ba8ae [2021-11-07 02:06:22,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:06:22,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:06:22,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:22,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:06:22,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:06:22,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba46d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22, skipping insertion in model container [2021-11-07 02:06:22,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:06:22,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:26,109 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-07 02:06:26,114 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-07 02:06:26,115 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-07 02:06:26,116 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-07 02:06:26,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:26,201 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:06:26,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:26,711 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-07 02:06:26,712 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-07 02:06:26,713 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-07 02:06:26,714 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-07 02:06:26,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:26,770 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:06:27,302 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-07 02:06:27,303 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-07 02:06:27,303 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-07 02:06:27,304 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_a62afe67-a5ab-4496-b836-f2250afe42f0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-07 02:06:27,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:27,557 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:06:27,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27 WrapperNode [2021-11-07 02:06:27,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:27,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:06:27,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:06:27,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:06:27,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:27,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:06:28,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:06:28,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:06:28,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:06:28,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:06:28,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:06:28,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:06:28,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:06:28,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (1/1) ... [2021-11-07 02:06:28,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:06:28,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:06:28,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:06:29,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:06:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:06:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:06:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:06:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:06:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:06:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:06:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:06:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:06:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:06:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:06:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:06:29,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:06:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:06:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:06:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:06:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:06:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:06:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:06:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:06:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:06:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:06:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:06:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:06:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:06:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:06:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:06:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:06:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:07:48,801 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-07 02:07:48,802 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-07 02:07:48,802 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,802 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,803 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,803 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,803 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,803 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,804 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,804 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-07 02:07:48,805 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0bv32; [2021-11-07 02:07:48,806 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-07 02:07:48,806 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 02:07:48,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:07:48,847 INFO L299 CfgBuilder]: Removed 3189 assume(true) statements. [2021-11-07 02:07:48,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:48 BoogieIcfgContainer [2021-11-07 02:07:48,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:07:48,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:07:48,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:07:48,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:07:48,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:06:22" (1/3) ... [2021-11-07 02:07:48,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3f5a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:48, skipping insertion in model container [2021-11-07 02:07:48,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:27" (2/3) ... [2021-11-07 02:07:48,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3f5a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:48, skipping insertion in model container [2021-11-07 02:07:48,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:48" (3/3) ... [2021-11-07 02:07:48,872 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-07 02:07:48,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:07:48,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 137 error locations. [2021-11-07 02:07:48,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:07:48,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:07:48,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2021-11-07 02:07:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 2946 states, 2809 states have (on average 1.3595585617657528) internal successors, (3819), 2945 states have internal predecessors, (3819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 02:07:49,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:49,073 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] [2021-11-07 02:07:49,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:07:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1954461346, now seen corresponding path program 1 times [2021-11-07 02:07:49,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:49,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66391949] [2021-11-07 02:07:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:49,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:49,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:49,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:07:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:50,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:50,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:50,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:51,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:51,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66391949] [2021-11-07 02:07:51,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66391949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:51,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:51,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:51,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775710050] [2021-11-07 02:07:51,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:51,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:51,096 INFO L87 Difference]: Start difference. First operand has 2946 states, 2809 states have (on average 1.3595585617657528) internal successors, (3819), 2945 states have internal predecessors, (3819), 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 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:53,969 INFO L93 Difference]: Finished difference Result 11160 states and 14489 transitions. [2021-11-07 02:07:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 33 [2021-11-07 02:07:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:54,038 INFO L225 Difference]: With dead ends: 11160 [2021-11-07 02:07:54,038 INFO L226 Difference]: Without dead ends: 7759 [2021-11-07 02:07:54,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 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 02:07:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2021-11-07 02:07:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7367. [2021-11-07 02:07:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7230 states have (on average 1.2686030428769017) internal successors, (9172), 7366 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 9172 transitions. [2021-11-07 02:07:54,449 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 9172 transitions. Word has length 33 [2021-11-07 02:07:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:54,450 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 9172 transitions. [2021-11-07 02:07:54,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 9172 transitions. [2021-11-07 02:07:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 02:07:54,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:54,461 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] [2021-11-07 02:07:54,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:54,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:54,683 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:07:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash -176422703, now seen corresponding path program 1 times [2021-11-07 02:07:54,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:54,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63137816] [2021-11-07 02:07:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:54,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:54,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:54,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:54,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:07:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:56,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:56,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:56,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:56,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:56,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63137816] [2021-11-07 02:07:56,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63137816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:56,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:56,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:56,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867914222] [2021-11-07 02:07:56,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:56,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:56,550 INFO L87 Difference]: Start difference. First operand 7367 states and 9172 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:59,672 INFO L93 Difference]: Finished difference Result 18104 states and 22803 transitions. [2021-11-07 02:07:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 36 [2021-11-07 02:07:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:59,732 INFO L225 Difference]: With dead ends: 18104 [2021-11-07 02:07:59,732 INFO L226 Difference]: Without dead ends: 10781 [2021-11-07 02:07:59,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 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 02:07:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10781 states. [2021-11-07 02:08:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10781 to 10521. [2021-11-07 02:08:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10521 states, 10384 states have (on average 1.2935285053929122) internal successors, (13432), 10520 states have internal predecessors, (13432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10521 states to 10521 states and 13432 transitions. [2021-11-07 02:08:00,247 INFO L78 Accepts]: Start accepts. Automaton has 10521 states and 13432 transitions. Word has length 36 [2021-11-07 02:08:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:00,248 INFO L470 AbstractCegarLoop]: Abstraction has 10521 states and 13432 transitions. [2021-11-07 02:08:00,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 10521 states and 13432 transitions. [2021-11-07 02:08:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 02:08:00,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:00,250 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] [2021-11-07 02:08:00,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:00,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:00,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:08:00,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1802019258, now seen corresponding path program 1 times [2021-11-07 02:08:00,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:00,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847337633] [2021-11-07 02:08:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:00,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:00,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:00,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:08:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:01,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:01,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:02,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:02,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:02,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847337633] [2021-11-07 02:08:02,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847337633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:02,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:02,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:08:02,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565852355] [2021-11-07 02:08:02,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:02,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:02,204 INFO L87 Difference]: Start difference. First operand 10521 states and 13432 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:05,167 INFO L93 Difference]: Finished difference Result 26984 states and 34413 transitions. [2021-11-07 02:08:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:05,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-07 02:08:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:05,261 INFO L225 Difference]: With dead ends: 26984 [2021-11-07 02:08:05,261 INFO L226 Difference]: Without dead ends: 16507 [2021-11-07 02:08:05,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16507 states. [2021-11-07 02:08:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16507 to 16145. [2021-11-07 02:08:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 16008 states have (on average 1.2943528235882058) internal successors, (20720), 16144 states have internal predecessors, (20720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20720 transitions. [2021-11-07 02:08:06,005 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20720 transitions. Word has length 40 [2021-11-07 02:08:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:06,005 INFO L470 AbstractCegarLoop]: Abstraction has 16145 states and 20720 transitions. [2021-11-07 02:08:06,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20720 transitions. [2021-11-07 02:08:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:08:06,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:06,011 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] [2021-11-07 02:08:06,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:06,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:06,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:08:06,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash -541025864, now seen corresponding path program 1 times [2021-11-07 02:08:06,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:06,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014303626] [2021-11-07 02:08:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:06,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:06,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:06,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:08:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:07,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:07,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:07,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:07,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:07,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014303626] [2021-11-07 02:08:07,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014303626] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:07,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:07,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:07,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106855361] [2021-11-07 02:08:07,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:07,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:07,979 INFO L87 Difference]: Start difference. First operand 16145 states and 20720 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:11,684 INFO L93 Difference]: Finished difference Result 59122 states and 75575 transitions. [2021-11-07 02:08:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 42 [2021-11-07 02:08:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:11,798 INFO L225 Difference]: With dead ends: 59122 [2021-11-07 02:08:11,799 INFO L226 Difference]: Without dead ends: 43021 [2021-11-07 02:08:11,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 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 02:08:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43021 states. [2021-11-07 02:08:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43021 to 41913. [2021-11-07 02:08:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41913 states, 41776 states have (on average 1.2892091152815013) internal successors, (53858), 41912 states have internal predecessors, (53858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41913 states to 41913 states and 53858 transitions. [2021-11-07 02:08:13,489 INFO L78 Accepts]: Start accepts. Automaton has 41913 states and 53858 transitions. Word has length 42 [2021-11-07 02:08:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:13,491 INFO L470 AbstractCegarLoop]: Abstraction has 41913 states and 53858 transitions. [2021-11-07 02:08:13,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 41913 states and 53858 transitions. [2021-11-07 02:08:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:08:13,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:13,493 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] [2021-11-07 02:08:13,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:13,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:13,715 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr123ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:08:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -229544855, now seen corresponding path program 1 times [2021-11-07 02:08:13,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:13,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329259801] [2021-11-07 02:08:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:13,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:13,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:13,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:08:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:14,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:14,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:15,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:15,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:15,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329259801] [2021-11-07 02:08:15,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329259801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:15,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:15,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:08:15,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115524815] [2021-11-07 02:08:15,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:15,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:15,305 INFO L87 Difference]: Start difference. First operand 41913 states and 53858 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:19,263 INFO L93 Difference]: Finished difference Result 95707 states and 122828 transitions. [2021-11-07 02:08:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:19,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-07 02:08:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:19,406 INFO L225 Difference]: With dead ends: 95707 [2021-11-07 02:08:19,406 INFO L226 Difference]: Without dead ends: 53838 [2021-11-07 02:08:19,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:19,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53838 states. [2021-11-07 02:08:21,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53838 to 53438. [2021-11-07 02:08:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53438 states, 53301 states have (on average 1.2800885536856719) internal successors, (68230), 53437 states have internal predecessors, (68230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53438 states to 53438 states and 68230 transitions. [2021-11-07 02:08:21,552 INFO L78 Accepts]: Start accepts. Automaton has 53438 states and 68230 transitions. Word has length 44 [2021-11-07 02:08:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:21,554 INFO L470 AbstractCegarLoop]: Abstraction has 53438 states and 68230 transitions. [2021-11-07 02:08:21,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 53438 states and 68230 transitions. [2021-11-07 02:08:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 02:08:21,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:21,555 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] [2021-11-07 02:08:21,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:21,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:21,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:08:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1545664541, now seen corresponding path program 1 times [2021-11-07 02:08:21,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:21,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878782653] [2021-11-07 02:08:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:21,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:21,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:21,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:21,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:08:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:22,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:22,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:23,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:23,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:23,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878782653] [2021-11-07 02:08:23,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878782653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:23,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:23,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:08:23,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351724779] [2021-11-07 02:08:23,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:23,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:23,367 INFO L87 Difference]: Start difference. First operand 53438 states and 68230 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:28,582 INFO L93 Difference]: Finished difference Result 136016 states and 173756 transitions. [2021-11-07 02:08:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:28,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-07 02:08:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:28,750 INFO L225 Difference]: With dead ends: 136016 [2021-11-07 02:08:28,750 INFO L226 Difference]: Without dead ends: 82622 [2021-11-07 02:08:28,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82622 states. [2021-11-07 02:08:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82622 to 82182. [2021-11-07 02:08:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82182 states, 82045 states have (on average 1.2738619050521056) internal successors, (104514), 82181 states have internal predecessors, (104514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82182 states to 82182 states and 104514 transitions. [2021-11-07 02:08:32,101 INFO L78 Accepts]: Start accepts. Automaton has 82182 states and 104514 transitions. Word has length 45 [2021-11-07 02:08:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:32,101 INFO L470 AbstractCegarLoop]: Abstraction has 82182 states and 104514 transitions. [2021-11-07 02:08:32,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 82182 states and 104514 transitions. [2021-11-07 02:08:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 02:08:32,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:32,103 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:08:32,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 02:08:32,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:32,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:08:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1445561860, now seen corresponding path program 1 times [2021-11-07 02:08:32,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:32,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758608891] [2021-11-07 02:08:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:32,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:32,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:32,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:08:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:33,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:33,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:33,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:34,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:34,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758608891] [2021-11-07 02:08:34,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758608891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:34,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:34,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:34,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925545402] [2021-11-07 02:08:34,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:34,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:34,079 INFO L87 Difference]: Start difference. First operand 82182 states and 104514 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,775 INFO L93 Difference]: Finished difference Result 164464 states and 209262 transitions. [2021-11-07 02:08:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 02:08:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:38,077 INFO L225 Difference]: With dead ends: 164464 [2021-11-07 02:08:38,078 INFO L226 Difference]: Without dead ends: 82398 [2021-11-07 02:08:38,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 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 02:08:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82398 states. [2021-11-07 02:08:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82398 to 82398. [2021-11-07 02:08:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82398 states, 82261 states have (on average 1.2731428015706105) internal successors, (104730), 82397 states have internal predecessors, (104730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82398 states to 82398 states and 104730 transitions. [2021-11-07 02:08:41,250 INFO L78 Accepts]: Start accepts. Automaton has 82398 states and 104730 transitions. Word has length 66 [2021-11-07 02:08:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:41,250 INFO L470 AbstractCegarLoop]: Abstraction has 82398 states and 104730 transitions. [2021-11-07 02:08:41,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 82398 states and 104730 transitions. [2021-11-07 02:08:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 02:08:41,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:41,252 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] [2021-11-07 02:08:41,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:08:41,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:41,459 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-07 02:08:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -624496764, now seen corresponding path program 1 times [2021-11-07 02:08:41,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:41,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838851566] [2021-11-07 02:08:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:41,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:41,463 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:41,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:08:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:42,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:08:42,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:43,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:43,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:43,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838851566] [2021-11-07 02:08:43,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838851566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:43,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1871102577] [2021-11-07 02:08:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:43,530 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:43,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:43,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a62afe67-a5ab-4496-b836-f2250afe42f0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:08:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:44,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:44,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:44,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:08:45,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1871102577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:45,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:45,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:08:45,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482231678] [2021-11-07 02:08:45,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:45,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:08:45,198 INFO L87 Difference]: Start difference. First operand 82398 states and 104730 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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)