./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/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_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 04:37:38,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:38,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:38,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:38,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:38,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:38,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:38,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:38,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:38,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:38,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:38,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:38,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:38,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:38,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:38,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:38,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:38,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:38,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:38,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:38,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:38,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:38,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:38,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:38,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:38,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:38,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:38,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:38,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:38,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:38,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:38,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:38,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:38,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:38,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:38,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:38,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:38,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:38,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:38,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:38,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:38,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:37:38,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:38,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:38,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:38,862 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:38,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:38,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:38,863 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:37:38,864 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:38,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:38,872 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:37:38,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:37:38,874 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:38,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:37:38,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:37:38,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:37:38,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:38,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:38,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:38,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:37:38,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:38,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:37:38,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:38,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:37:38,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:38,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:37:38,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:38,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:38,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:38,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:38,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:38,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:37:38,883 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:37:38,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:37:38,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:37:38,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:38,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:38,884 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-03 04:37:39,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:39,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:39,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:39,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:39,287 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:39,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-03 04:37:39,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/c739f86b0/2a8e7a402ae3412b894a686083322330/FLAGea56ecad7 [2021-11-03 04:37:40,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:40,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-03 04:37:40,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/c739f86b0/2a8e7a402ae3412b894a686083322330/FLAGea56ecad7 [2021-11-03 04:37:40,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/c739f86b0/2a8e7a402ae3412b894a686083322330 [2021-11-03 04:37:40,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:40,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:40,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:40,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:40,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:40,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:40" (1/1) ... [2021-11-03 04:37:40,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748420e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:40, skipping insertion in model container [2021-11-03 04:37:40,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:40" (1/1) ... [2021-11-03 04:37:40,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:41,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:44,933 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-03 04:37:44,939 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-03 04:37:44,940 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-03 04:37:44,941 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-03 04:37:44,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:45,015 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) [2021-11-03 04:37:45,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cda98e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:45, skipping insertion in model container [2021-11-03 04:37:45,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:45,016 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:37:45,020 INFO L168 Benchmark]: Toolchain (without parser) took 4227.81 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:45,020 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 77.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:37:45,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4223.54 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 69.1 MB in the beginning and 68.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:37:45,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 77.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4223.54 ms. Allocated memory was 102.8 MB in the beginning and 130.0 MB in the end (delta: 27.3 MB). Free memory was 69.1 MB in the beginning and 68.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 49.2 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/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_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 04:37:47,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:47,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:47,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:47,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:47,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:47,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:47,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:47,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:47,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:47,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:47,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:47,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:47,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:47,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:47,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:47,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:47,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:47,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:48,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:48,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:48,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:48,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:48,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:48,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:48,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:48,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:48,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:48,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:48,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:48,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:48,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:48,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:48,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:48,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:48,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:48,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:48,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:48,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:48,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:48,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:48,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:37:48,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:48,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:48,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:48,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:48,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:48,071 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:48,071 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:48,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:48,072 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:48,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:48,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:48,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:37:48,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:48,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:37:48,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:48,077 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:37:48,077 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:37:48,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:37:48,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:48,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:37:48,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:48,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:37:48,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:48,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:48,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:48,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:48,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:37:48,081 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:37:48,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:37:48,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:37:48,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:48,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:48,082 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-03 04:37:48,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:48,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:48,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:48,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:48,666 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:48,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-03 04:37:48,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/0d9508e6f/29898bcc383143d99fb837f0047284ed/FLAG16b7ef5e9 [2021-11-03 04:37:49,948 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:49,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-03 04:37:50,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/0d9508e6f/29898bcc383143d99fb837f0047284ed/FLAG16b7ef5e9 [2021-11-03 04:37:50,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/data/0d9508e6f/29898bcc383143d99fb837f0047284ed [2021-11-03 04:37:50,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:50,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:50,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:50,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:50,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:50,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:50" (1/1) ... [2021-11-03 04:37:50,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1350dd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:50, skipping insertion in model container [2021-11-03 04:37:50,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:50" (1/1) ... [2021-11-03 04:37:50,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:50,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:54,326 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-03 04:37:54,331 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-03 04:37:54,332 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-03 04:37:54,333 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-03 04:37:54,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:54,419 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:37:54,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:55,102 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-03 04:37:55,103 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-03 04:37:55,103 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-03 04:37:55,104 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-03 04:37:55,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:55,130 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:37:55,814 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-03 04:37:55,815 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-03 04:37:55,816 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-03 04:37:55,816 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_c6fff346-cc0e-462f-a52e-c61337c5aa16/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-03 04:37:55,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:56,081 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:37:56,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56 WrapperNode [2021-11-03 04:37:56,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:56,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:56,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:37:56,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:37:56,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:56,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:56,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:56,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:37:56,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:37:56,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:37:56,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:56,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:56,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:56,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:57,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:57,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:57,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:57,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:37:57,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:37:57,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:37:57,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:37:57,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (1/1) ... [2021-11-03 04:37:57,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:57,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:57,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:37:57,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:37:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:37:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:37:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:37:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:37:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:37:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:37:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:37:57,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:37:57,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:37:57,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:37:57,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:37:57,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:37:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:37:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:37:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:37:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:37:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:37:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:37:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:37:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:37:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:37:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:37:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:37:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:37:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:37:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:37:57,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:37:57,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:37:57,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:39:28,951 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-03 04:39:28,952 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-03 04:39:28,952 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,952 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,953 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,953 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,953 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,953 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,953 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,954 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-03 04:39:28,955 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0bv32; [2021-11-03 04:39:28,955 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-03 04:39:28,956 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 04:39:28,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:39:28,997 INFO L299 CfgBuilder]: Removed 3189 assume(true) statements. [2021-11-03 04:39:29,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:29 BoogieIcfgContainer [2021-11-03 04:39:29,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:39:29,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:39:29,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:39:29,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:39:29,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:37:50" (1/3) ... [2021-11-03 04:39:29,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ebda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:29, skipping insertion in model container [2021-11-03 04:39:29,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:56" (2/3) ... [2021-11-03 04:39:29,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ebda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:29, skipping insertion in model container [2021-11-03 04:39:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:29" (3/3) ... [2021-11-03 04:39:29,014 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-03 04:39:29,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:39:29,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 137 error locations. [2021-11-03 04:39:29,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:39:29,104 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 [2021-11-03 04:39:29,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2021-11-03 04:39:29,174 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) [2021-11-03 04:39:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:39:29,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:29,187 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] [2021-11-03 04:39:29,187 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)] === [2021-11-03 04:39:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1954461346, now seen corresponding path program 1 times [2021-11-03 04:39:29,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:29,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809853920] [2021-11-03 04:39:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:29,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:29,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:29,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:29,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:39:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:30,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:30,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:31,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:31,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:31,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809853920] [2021-11-03 04:39:31,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809853920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:31,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:31,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:39:31,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823857499] [2021-11-03 04:39:31,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:31,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:31,330 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) [2021-11-03 04:39:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:34,360 INFO L93 Difference]: Finished difference Result 11160 states and 14489 transitions. [2021-11-03 04:39:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:34,363 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 [2021-11-03 04:39:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:34,458 INFO L225 Difference]: With dead ends: 11160 [2021-11-03 04:39:34,459 INFO L226 Difference]: Without dead ends: 7759 [2021-11-03 04:39:34,482 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 [2021-11-03 04:39:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2021-11-03 04:39:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7367. [2021-11-03 04:39:35,047 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) [2021-11-03 04:39:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 9172 transitions. [2021-11-03 04:39:35,088 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 9172 transitions. Word has length 33 [2021-11-03 04:39:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:35,089 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 9172 transitions. [2021-11-03 04:39:35,090 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) [2021-11-03 04:39:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 9172 transitions. [2021-11-03 04:39:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 04:39:35,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:35,095 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] [2021-11-03 04:39:35,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:39:35,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:35,322 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)] === [2021-11-03 04:39:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash -176422703, now seen corresponding path program 1 times [2021-11-03 04:39:35,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:35,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974942825] [2021-11-03 04:39:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:35,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:35,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:35,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:35,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:39:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:37,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:37,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:37,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:37,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:37,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974942825] [2021-11-03 04:39:37,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974942825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:37,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:37,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:39:37,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618967076] [2021-11-03 04:39:37,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:37,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:37,567 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) [2021-11-03 04:39:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:40,870 INFO L93 Difference]: Finished difference Result 18104 states and 22803 transitions. [2021-11-03 04:39:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:40,871 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 [2021-11-03 04:39:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:40,949 INFO L225 Difference]: With dead ends: 18104 [2021-11-03 04:39:40,950 INFO L226 Difference]: Without dead ends: 10781 [2021-11-03 04:39:40,970 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 [2021-11-03 04:39:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10781 states. [2021-11-03 04:39:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10781 to 10521. [2021-11-03 04:39:41,832 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) [2021-11-03 04:39:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10521 states to 10521 states and 13432 transitions. [2021-11-03 04:39:41,888 INFO L78 Accepts]: Start accepts. Automaton has 10521 states and 13432 transitions. Word has length 36 [2021-11-03 04:39:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:41,889 INFO L470 AbstractCegarLoop]: Abstraction has 10521 states and 13432 transitions. [2021-11-03 04:39:41,889 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) [2021-11-03 04:39:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10521 states and 13432 transitions. [2021-11-03 04:39:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:39:41,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:41,896 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] [2021-11-03 04:39:41,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:42,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:42,122 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)] === [2021-11-03 04:39:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1802019258, now seen corresponding path program 1 times [2021-11-03 04:39:42,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:42,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423617923] [2021-11-03 04:39:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:42,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:42,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:42,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:42,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:39:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:43,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:43,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:44,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:44,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:44,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423617923] [2021-11-03 04:39:44,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423617923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:44,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:44,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:39:44,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824360003] [2021-11-03 04:39:44,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:44,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:44,397 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) [2021-11-03 04:39:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:47,634 INFO L93 Difference]: Finished difference Result 26984 states and 34413 transitions. [2021-11-03 04:39:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:47,635 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 [2021-11-03 04:39:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:47,757 INFO L225 Difference]: With dead ends: 26984 [2021-11-03 04:39:47,757 INFO L226 Difference]: Without dead ends: 16507 [2021-11-03 04:39:47,783 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 [2021-11-03 04:39:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16507 states. [2021-11-03 04:39:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16507 to 16145. [2021-11-03 04:39:48,691 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) [2021-11-03 04:39:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20720 transitions. [2021-11-03 04:39:48,744 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20720 transitions. Word has length 40 [2021-11-03 04:39:48,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:48,745 INFO L470 AbstractCegarLoop]: Abstraction has 16145 states and 20720 transitions. [2021-11-03 04:39:48,747 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) [2021-11-03 04:39:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20720 transitions. [2021-11-03 04:39:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:39:48,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:48,752 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] [2021-11-03 04:39:48,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:48,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:48,966 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)] === [2021-11-03 04:39:48,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash -541025864, now seen corresponding path program 1 times [2021-11-03 04:39:48,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:48,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099585834] [2021-11-03 04:39:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:48,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:48,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:48,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:49,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:39:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:50,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:50,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:50,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:51,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:51,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099585834] [2021-11-03 04:39:51,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099585834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:51,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:51,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:39:51,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326544823] [2021-11-03 04:39:51,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:51,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:51,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:51,221 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) [2021-11-03 04:39:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:55,277 INFO L93 Difference]: Finished difference Result 59122 states and 75575 transitions. [2021-11-03 04:39:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:55,278 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 [2021-11-03 04:39:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:55,429 INFO L225 Difference]: With dead ends: 59122 [2021-11-03 04:39:55,429 INFO L226 Difference]: Without dead ends: 43021 [2021-11-03 04:39:55,478 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 [2021-11-03 04:39:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43021 states. [2021-11-03 04:39:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43021 to 41913. [2021-11-03 04:39:57,743 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) [2021-11-03 04:39:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41913 states to 41913 states and 53858 transitions. [2021-11-03 04:39:57,893 INFO L78 Accepts]: Start accepts. Automaton has 41913 states and 53858 transitions. Word has length 42 [2021-11-03 04:39:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:57,896 INFO L470 AbstractCegarLoop]: Abstraction has 41913 states and 53858 transitions. [2021-11-03 04:39:57,896 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) [2021-11-03 04:39:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 41913 states and 53858 transitions. [2021-11-03 04:39:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:39:57,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:57,898 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] [2021-11-03 04:39:57,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:58,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:58,122 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)] === [2021-11-03 04:39:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -229544855, now seen corresponding path program 1 times [2021-11-03 04:39:58,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:58,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576589837] [2021-11-03 04:39:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:58,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:58,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:58,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:39:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:59,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:59,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:00,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:00,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:00,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576589837] [2021-11-03 04:40:00,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576589837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:00,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:00,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:40:00,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472300570] [2021-11-03 04:40:00,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:40:00,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:40:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:00,342 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) [2021-11-03 04:40:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:04,701 INFO L93 Difference]: Finished difference Result 95707 states and 122828 transitions. [2021-11-03 04:40:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:04,702 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 [2021-11-03 04:40:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:04,882 INFO L225 Difference]: With dead ends: 95707 [2021-11-03 04:40:04,882 INFO L226 Difference]: Without dead ends: 53838 [2021-11-03 04:40:04,984 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 [2021-11-03 04:40:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53838 states. [2021-11-03 04:40:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53838 to 53438. [2021-11-03 04:40:07,622 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) [2021-11-03 04:40:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53438 states to 53438 states and 68230 transitions. [2021-11-03 04:40:07,758 INFO L78 Accepts]: Start accepts. Automaton has 53438 states and 68230 transitions. Word has length 44 [2021-11-03 04:40:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:07,759 INFO L470 AbstractCegarLoop]: Abstraction has 53438 states and 68230 transitions. [2021-11-03 04:40:07,759 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) [2021-11-03 04:40:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53438 states and 68230 transitions. [2021-11-03 04:40:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:40:07,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:07,761 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] [2021-11-03 04:40:07,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:07,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:07,976 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)] === [2021-11-03 04:40:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1545664541, now seen corresponding path program 1 times [2021-11-03 04:40:07,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:07,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111822085] [2021-11-03 04:40:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:07,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:07,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:07,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:07,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:40:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:09,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:09,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:09,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:09,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111822085] [2021-11-03 04:40:09,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111822085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:09,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:09,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:40:09,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187187380] [2021-11-03 04:40:09,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:40:09,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:40:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:09,974 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) [2021-11-03 04:40:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:15,700 INFO L93 Difference]: Finished difference Result 136016 states and 173756 transitions. [2021-11-03 04:40:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:15,701 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 [2021-11-03 04:40:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:15,919 INFO L225 Difference]: With dead ends: 136016 [2021-11-03 04:40:15,919 INFO L226 Difference]: Without dead ends: 82622 [2021-11-03 04:40:16,026 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 [2021-11-03 04:40:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82622 states. [2021-11-03 04:40:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82622 to 82182. [2021-11-03 04:40:19,943 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) [2021-11-03 04:40:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82182 states to 82182 states and 104514 transitions. [2021-11-03 04:40:20,130 INFO L78 Accepts]: Start accepts. Automaton has 82182 states and 104514 transitions. Word has length 45 [2021-11-03 04:40:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:20,130 INFO L470 AbstractCegarLoop]: Abstraction has 82182 states and 104514 transitions. [2021-11-03 04:40:20,130 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) [2021-11-03 04:40:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 82182 states and 104514 transitions. [2021-11-03 04:40:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:40:20,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:20,134 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] [2021-11-03 04:40:20,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:20,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:20,348 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)] === [2021-11-03 04:40:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1445561860, now seen corresponding path program 1 times [2021-11-03 04:40:20,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:20,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125813554] [2021-11-03 04:40:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:20,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:20,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:20,352 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:20,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:40:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:21,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:21,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:22,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:22,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:22,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125813554] [2021-11-03 04:40:22,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125813554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:22,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:22,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:22,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072256204] [2021-11-03 04:40:22,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:22,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:22,530 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) [2021-11-03 04:40:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:26,744 INFO L93 Difference]: Finished difference Result 164464 states and 209262 transitions. [2021-11-03 04:40:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:26,744 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 [2021-11-03 04:40:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:26,914 INFO L225 Difference]: With dead ends: 164464 [2021-11-03 04:40:26,914 INFO L226 Difference]: Without dead ends: 82398 [2021-11-03 04:40:26,997 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 [2021-11-03 04:40:27,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82398 states. [2021-11-03 04:40:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82398 to 82398. [2021-11-03 04:40:30,762 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) [2021-11-03 04:40:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82398 states to 82398 states and 104730 transitions. [2021-11-03 04:40:30,941 INFO L78 Accepts]: Start accepts. Automaton has 82398 states and 104730 transitions. Word has length 66 [2021-11-03 04:40:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:30,941 INFO L470 AbstractCegarLoop]: Abstraction has 82398 states and 104730 transitions. [2021-11-03 04:40:30,942 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) [2021-11-03 04:40:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 82398 states and 104730 transitions. [2021-11-03 04:40:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:40:30,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:30,944 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] [2021-11-03 04:40:30,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:31,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:31,153 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)] === [2021-11-03 04:40:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash -624496764, now seen corresponding path program 1 times [2021-11-03 04:40:31,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:31,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489753396] [2021-11-03 04:40:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:31,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:31,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:31,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:40:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:32,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:40:32,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:33,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:33,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:33,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489753396] [2021-11-03 04:40:33,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489753396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:40:33,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [237063198] [2021-11-03 04:40:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:33,440 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:33,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:40:33,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:40:33,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fff346-cc0e-462f-a52e-c61337c5aa16/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 04:40:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:34,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:34,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:40:35,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 04:40:35,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [237063198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:35,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:40:35,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 04:40:35,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583926394] [2021-11-03 04:40:35,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:35,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:40:35,442 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) [2021-11-03 04:40:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:46,992 INFO L93 Difference]: Finished difference Result 297616 states and 379146 transitions. [2021-11-03 04:40:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:46,993 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 70 [2021-11-03 04:40:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:47,568 INFO L225 Difference]: With dead ends: 297616 [2021-11-03 04:40:47,568 INFO L226 Difference]: Without dead ends: 215334 [2021-11-03 04:40:47,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90