./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 246ceae3084839b9b339f99ac0b8607f0cf18f3fcdd140edc02c2b8d150b0ed6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:51,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:51,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:51,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:51,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:51,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:51,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:51,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:51,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:51,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:51,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:51,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:51,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:51,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:51,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:51,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:51,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:51,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:51,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:51,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:51,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:51,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:51,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:51,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:51,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:51,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:51,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:51,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:51,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:51,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:51,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:51,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:51,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:51,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:51,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:51,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:51,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:51,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:51,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:51,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:51,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:51,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:12:51,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:51,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:51,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:51,872 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:51,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:51,872 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:51,873 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:12:51,873 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:51,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:51,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:12:51,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:12:51,874 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:51,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:12:51,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:12:51,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:12:51,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:51,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:12:51,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:51,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:51,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:51,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:51,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:51,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:51,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:51,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:51,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:51,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:51,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:51,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:51,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:51,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:51,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:12:51,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:12:51,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:51,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:51,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:51,882 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246ceae3084839b9b339f99ac0b8607f0cf18f3fcdd140edc02c2b8d150b0ed6 [2021-11-07 01:12:52,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:52,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:52,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:52,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:52,279 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:52,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2021-11-07 01:12:52,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/17ed51272/028d7e43a7634e18a194f083bd7fb0fe/FLAG46b43ca30 [2021-11-07 01:12:53,498 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:53,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2021-11-07 01:12:53,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/17ed51272/028d7e43a7634e18a194f083bd7fb0fe/FLAG46b43ca30 [2021-11-07 01:12:53,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/17ed51272/028d7e43a7634e18a194f083bd7fb0fe [2021-11-07 01:12:53,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:53,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:53,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:53,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:53,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:53,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:53" (1/1) ... [2021-11-07 01:12:53,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf93a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:53, skipping insertion in model container [2021-11-07 01:12:53,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:53" (1/1) ... [2021-11-07 01:12:53,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:54,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:56,083 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:56,086 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:56,093 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:56,096 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:56,319 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2021-11-07 01:12:56,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:56,435 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:12:56,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c818768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:56, skipping insertion in model container [2021-11-07 01:12:56,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:56,437 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:12:56,440 INFO L168 Benchmark]: Toolchain (without parser) took 2596.98 ms. Allocated memory was 117.4 MB in the beginning and 169.9 MB in the end (delta: 52.4 MB). Free memory was 90.9 MB in the beginning and 107.3 MB in the end (delta: -16.4 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:56,440 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:12:56,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2593.89 ms. Allocated memory was 117.4 MB in the beginning and 169.9 MB in the end (delta: 52.4 MB). Free memory was 90.4 MB in the beginning and 107.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:56,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2593.89 ms. Allocated memory was 117.4 MB in the beginning and 169.9 MB in the end (delta: 52.4 MB). Free memory was 90.4 MB in the beginning and 107.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6306]: 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 246ceae3084839b9b339f99ac0b8607f0cf18f3fcdd140edc02c2b8d150b0ed6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:59,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:59,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:59,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:59,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:59,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:59,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:59,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:59,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:59,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:59,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:59,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:59,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:59,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:59,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:59,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:59,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:59,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:59,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:59,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:59,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:59,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:59,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:59,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:59,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:59,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:59,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:59,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:59,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:59,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:59,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:59,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:59,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:59,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:59,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:59,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:59,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:59,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:59,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:59,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:59,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:59,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:12:59,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:59,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:59,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:59,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:59,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:59,417 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:59,417 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:59,417 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:59,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:59,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:59,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:59,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:59,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:59,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:59,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:59,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:12:59,424 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:12:59,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:59,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:59,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:59,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:59,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:12:59,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:59,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:59,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:59,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:59,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:59,427 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:12:59,427 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:59,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:59,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:59,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:59,428 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246ceae3084839b9b339f99ac0b8607f0cf18f3fcdd140edc02c2b8d150b0ed6 [2021-11-07 01:12:59,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:59,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:59,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:59,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:59,959 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:59,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2021-11-07 01:13:00,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/0b5480120/752a6f23ae2e443093e76e940c8a8650/FLAG239b18c95 [2021-11-07 01:13:01,413 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:13:01,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2021-11-07 01:13:01,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/0b5480120/752a6f23ae2e443093e76e940c8a8650/FLAG239b18c95 [2021-11-07 01:13:01,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/data/0b5480120/752a6f23ae2e443093e76e940c8a8650 [2021-11-07 01:13:01,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:13:01,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:13:01,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:01,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:13:01,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:13:01,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:01" (1/1) ... [2021-11-07 01:13:01,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f918d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:01, skipping insertion in model container [2021-11-07 01:13:01,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:01" (1/1) ... [2021-11-07 01:13:01,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:13:01,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:04,408 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2021-11-07 01:13:04,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:04,598 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:13:04,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:05,144 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2021-11-07 01:13:05,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:05,208 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:13:05,665 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_df8602e2-27f7-46a8-b4fd-a2bed339b4db/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2021-11-07 01:13:05,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:05,910 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:13:05,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05 WrapperNode [2021-11-07 01:13:05,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:05,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:05,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:13:05,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:13:05,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:06,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:10,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:10,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:13:10,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:13:10,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:13:10,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:10,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:11,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:11,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:12,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:12,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:12,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:12,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:13:12,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:13:12,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:13:12,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:13:12,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (1/1) ... [2021-11-07 01:13:12,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:13,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:13,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:13:13,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:13:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:13:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:13:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:13:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:13:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:13:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:13:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:13:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:13:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:13:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:13:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:13:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:13:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:13:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:13:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:13:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:13:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:13:13,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:18:20,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:18:20,740 INFO L299 CfgBuilder]: Removed 18962 assume(true) statements. [2021-11-07 01:18:20,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:18:20 BoogieIcfgContainer [2021-11-07 01:18:20,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:18:20,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:18:20,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:18:20,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:18:20,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:13:01" (1/3) ... [2021-11-07 01:18:20,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7953d339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:18:20, skipping insertion in model container [2021-11-07 01:18:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:05" (2/3) ... [2021-11-07 01:18:20,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7953d339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:18:20, skipping insertion in model container [2021-11-07 01:18:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:18:20" (3/3) ... [2021-11-07 01:18:20,764 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2021-11-07 01:18:20,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:18:20,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 01:18:20,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:18:20,915 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:18:20,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 01:18:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 11512 states, 11492 states have (on average 1.1874347372084928) internal successors, (13646), 11511 states have internal predecessors, (13646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:18:21,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:21,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:21,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:18:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1102701063, now seen corresponding path program 1 times [2021-11-07 01:18:21,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:21,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846463338] [2021-11-07 01:18:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:21,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:21,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:21,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:18:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:23,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:18:23,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:23,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:23,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:23,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846463338] [2021-11-07 01:18:23,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846463338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:23,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:23,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:18:23,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008272604] [2021-11-07 01:18:23,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:18:23,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:18:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:18:24,031 INFO L87 Difference]: Start difference. First operand has 11512 states, 11492 states have (on average 1.1874347372084928) internal successors, (13646), 11511 states have internal predecessors, (13646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:24,724 INFO L93 Difference]: Finished difference Result 23020 states and 27287 transitions. [2021-11-07 01:18:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:18:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2021-11-07 01:18:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:24,836 INFO L225 Difference]: With dead ends: 23020 [2021-11-07 01:18:24,836 INFO L226 Difference]: Without dead ends: 11447 [2021-11-07 01:18:24,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:18:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2021-11-07 01:18:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 11447. [2021-11-07 01:18:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11447 states, 11428 states have (on average 1.1788589429471474) internal successors, (13472), 11446 states have internal predecessors, (13472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11447 states to 11447 states and 13472 transitions. [2021-11-07 01:18:25,445 INFO L78 Accepts]: Start accepts. Automaton has 11447 states and 13472 transitions. Word has length 52 [2021-11-07 01:18:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:25,446 INFO L470 AbstractCegarLoop]: Abstraction has 11447 states and 13472 transitions. [2021-11-07 01:18:25,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11447 states and 13472 transitions. [2021-11-07 01:18:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:18:25,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:25,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:25,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:25,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:25,679 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:18:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 858444801, now seen corresponding path program 1 times [2021-11-07 01:18:25,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:25,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757084881] [2021-11-07 01:18:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:25,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:25,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:25,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:18:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:28,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:18:28,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:28,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:28,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:28,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757084881] [2021-11-07 01:18:28,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757084881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:28,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:28,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:18:28,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023012696] [2021-11-07 01:18:28,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:28,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:28,780 INFO L87 Difference]: Start difference. First operand 11447 states and 13472 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:30,150 INFO L93 Difference]: Finished difference Result 22886 states and 26947 transitions. [2021-11-07 01:18:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:18:30,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 52 [2021-11-07 01:18:30,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:30,227 INFO L225 Difference]: With dead ends: 22886 [2021-11-07 01:18:30,228 INFO L226 Difference]: Without dead ends: 11459 [2021-11-07 01:18:30,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:18:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11459 states. [2021-11-07 01:18:30,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11459 to 11459. [2021-11-07 01:18:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11459 states, 11440 states have (on average 1.1786713286713286) internal successors, (13484), 11458 states have internal predecessors, (13484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11459 states to 11459 states and 13484 transitions. [2021-11-07 01:18:30,657 INFO L78 Accepts]: Start accepts. Automaton has 11459 states and 13484 transitions. Word has length 52 [2021-11-07 01:18:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:30,658 INFO L470 AbstractCegarLoop]: Abstraction has 11459 states and 13484 transitions. [2021-11-07 01:18:30,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11459 states and 13484 transitions. [2021-11-07 01:18:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:18:30,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:30,666 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:30,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:30,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:30,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:18:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash 128686017, now seen corresponding path program 1 times [2021-11-07 01:18:30,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:30,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421279797] [2021-11-07 01:18:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:30,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:30,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:30,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:30,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:18:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:33,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:18:33,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:18:33,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:18:34,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:34,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421279797] [2021-11-07 01:18:34,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421279797] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:18:34,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [866279755] [2021-11-07 01:18:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:34,261 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:18:34,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:18:34,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:18:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:35,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:18:35,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:18:36,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:18:36,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [866279755] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:36,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:18:36,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:18:36,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833008368] [2021-11-07 01:18:36,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:18:36,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:18:36,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:18:36,811 INFO L87 Difference]: Start difference. First operand 11459 states and 13484 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:38,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:38,697 INFO L93 Difference]: Finished difference Result 34319 states and 40390 transitions. [2021-11-07 01:18:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:18:38,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 56 [2021-11-07 01:18:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:39,000 INFO L225 Difference]: With dead ends: 34319 [2021-11-07 01:18:39,000 INFO L226 Difference]: Without dead ends: 22889 [2021-11-07 01:18:39,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:18:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22889 states. [2021-11-07 01:18:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22889 to 22851. [2021-11-07 01:18:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22851 states, 22832 states have (on average 1.1742729502452698) internal successors, (26811), 22850 states have internal predecessors, (26811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22851 states to 22851 states and 26811 transitions. [2021-11-07 01:18:40,048 INFO L78 Accepts]: Start accepts. Automaton has 22851 states and 26811 transitions. Word has length 56 [2021-11-07 01:18:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:40,049 INFO L470 AbstractCegarLoop]: Abstraction has 22851 states and 26811 transitions. [2021-11-07 01:18:40,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22851 states and 26811 transitions. [2021-11-07 01:18:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:18:40,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:40,056 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:40,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:40,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:40,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:40,469 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:18:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1865458689, now seen corresponding path program 1 times [2021-11-07 01:18:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:40,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711894626] [2021-11-07 01:18:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:40,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:40,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:40,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:40,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:18:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:42,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:18:42,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:18:43,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:18:43,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:43,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711894626] [2021-11-07 01:18:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711894626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:18:43,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [379890490] [2021-11-07 01:18:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:43,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:43,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:18:43,685 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:18:43,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:18:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:45,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:18:45,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:18:45,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:18:46,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [379890490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:46,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:18:46,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:18:46,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948283326] [2021-11-07 01:18:46,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:46,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:18:46,029 INFO L87 Difference]: Start difference. First operand 22851 states and 26811 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:49,417 INFO L93 Difference]: Finished difference Result 110039 states and 128534 transitions. [2021-11-07 01:18:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:18:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 56 [2021-11-07 01:18:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:49,700 INFO L225 Difference]: With dead ends: 110039 [2021-11-07 01:18:49,700 INFO L226 Difference]: Without dead ends: 87217 [2021-11-07 01:18:49,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87217 states. [2021-11-07 01:18:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87217 to 43815. [2021-11-07 01:18:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43815 states, 43796 states have (on average 1.1681888756964107) internal successors, (51162), 43814 states have internal predecessors, (51162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43815 states to 43815 states and 51162 transitions. [2021-11-07 01:18:52,271 INFO L78 Accepts]: Start accepts. Automaton has 43815 states and 51162 transitions. Word has length 56 [2021-11-07 01:18:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:52,272 INFO L470 AbstractCegarLoop]: Abstraction has 43815 states and 51162 transitions. [2021-11-07 01:18:52,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 43815 states and 51162 transitions. [2021-11-07 01:18:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:18:52,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:52,279 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:52,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:52,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:52,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:52,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:18:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2078336815, now seen corresponding path program 1 times [2021-11-07 01:18:52,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:52,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023201009] [2021-11-07 01:18:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:52,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:52,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:52,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:52,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:18:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:54,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:18:54,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:18:55,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:18:55,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:55,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023201009] [2021-11-07 01:18:55,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023201009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:18:55,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1549092608] [2021-11-07 01:18:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:55,751 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:18:55,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:18:55,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:18:55,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:18:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:57,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:18:57,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:18:57,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:18:58,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1549092608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:58,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:18:58,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:18:58,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286384641] [2021-11-07 01:18:58,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:18:58,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:18:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:18:58,196 INFO L87 Difference]: Start difference. First operand 43815 states and 51162 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:05,037 INFO L93 Difference]: Finished difference Result 214859 states and 250293 transitions. [2021-11-07 01:19:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:19:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 57 [2021-11-07 01:19:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:05,647 INFO L225 Difference]: With dead ends: 214859 [2021-11-07 01:19:05,651 INFO L226 Difference]: Without dead ends: 171073 [2021-11-07 01:19:05,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:19:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171073 states. [2021-11-07 01:19:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171073 to 87111. [2021-11-07 01:19:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87111 states, 87092 states have (on average 1.167351765948652) internal successors, (101667), 87110 states have internal predecessors, (101667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87111 states to 87111 states and 101667 transitions. [2021-11-07 01:19:10,829 INFO L78 Accepts]: Start accepts. Automaton has 87111 states and 101667 transitions. Word has length 57 [2021-11-07 01:19:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:10,829 INFO L470 AbstractCegarLoop]: Abstraction has 87111 states and 101667 transitions. [2021-11-07 01:19:10,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 87111 states and 101667 transitions. [2021-11-07 01:19:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:19:10,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:10,834 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:10,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:11,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:11,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:11,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 01:19:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -395660920, now seen corresponding path program 1 times [2021-11-07 01:19:11,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:11,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457016202] [2021-11-07 01:19:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:11,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:11,243 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:11,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:19:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:13,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:19:13,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:19:13,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:19:14,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:14,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457016202] [2021-11-07 01:19:14,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457016202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:19:14,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1010138965] [2021-11-07 01:19:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:14,396 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:19:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:19:14,420 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:19:14,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8602e2-27f7-46a8-b4fd-a2bed339b4db/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:19:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:16,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:19:16,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:19:16,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:19:16,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1010138965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:16,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:19:16,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:19:16,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845702662] [2021-11-07 01:19:16,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:19:16,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:16,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:19:16,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:19:16,889 INFO L87 Difference]: Start difference. First operand 87111 states and 101667 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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)