./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--misc--sgi-xp--xpc.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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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 34bfb407ab3285beb6e4618a31251a3cfac86b629af8c3915889881b8af28c9e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:12:41,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:12:41,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:12:41,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:12:41,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:12:41,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:12:41,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:12:41,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:12:41,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:12:41,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:12:41,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:12:41,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:12:41,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:12:41,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:12:41,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:12:41,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:12:41,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:12:41,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:12:41,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:12:41,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:12:41,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:12:41,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:12:41,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:12:41,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:12:41,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:12:41,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:12:41,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:12:41,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:12:41,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:12:41,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:12:41,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:12:41,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:12:41,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:12:41,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:12:41,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:12:41,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:12:41,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:12:41,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:12:41,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:12:41,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:12:41,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:12:41,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:12:41,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:12:41,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:12:41,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:12:41,866 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:12:41,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:12:41,866 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:12:41,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:12:41,867 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:12:41,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:12:41,873 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:12:41,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:12:41,875 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:12:41,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:12:41,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:12:41,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:12:41,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:12:41,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:12:41,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:12:41,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:12:41,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:12:41,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:12:41,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:12:41,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:12:41,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:12:41,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:12:41,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:12:41,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:12:41,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:12:41,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:12:41,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:12:41,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:12:41,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:12:41,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:12:41,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:12:41,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:12:41,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:12:41,883 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bfb407ab3285beb6e4618a31251a3cfac86b629af8c3915889881b8af28c9e [2021-11-07 02:12:42,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:12:42,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:12:42,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:12:42,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:12:42,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:12:42,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-07 02:12:42,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/b71ccda44/c8242a4dc72742c18c0acde6b4afccea/FLAGfe3c0673c [2021-11-07 02:12:43,203 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:12:43,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-07 02:12:43,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/b71ccda44/c8242a4dc72742c18c0acde6b4afccea/FLAGfe3c0673c [2021-11-07 02:12:43,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/b71ccda44/c8242a4dc72742c18c0acde6b4afccea [2021-11-07 02:12:43,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:12:43,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:12:43,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:43,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:12:43,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:12:43,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:43" (1/1) ... [2021-11-07 02:12:43,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236f3a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:43, skipping insertion in model container [2021-11-07 02:12:43,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:43" (1/1) ... [2021-11-07 02:12:43,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:12:43,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:12:44,567 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 02:12:44,990 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 02:12:44,991 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 02:12:45,064 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 02:12:45,093 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 02:12:45,106 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 02:12:45,160 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 02:12:45,161 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 02:12:45,497 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 02:12:45,498 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 02:12:45,719 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 02:12:45,723 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 02:12:45,724 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 02:12:45,760 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 02:12:45,760 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 02:12:45,762 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 02:12:45,770 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 02:12:45,771 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 02:12:45,772 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 02:12:45,773 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 02:12:45,884 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 02:12:45,890 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 02:12:45,932 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 02:12:45,956 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 02:12:45,985 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 02:12:45,992 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 02:12:45,992 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 02:12:45,993 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 02:12:46,008 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 02:12:46,021 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 02:12:46,028 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 02:12:46,029 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 02:12:46,043 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 02:12:46,044 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 02:12:46,044 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 02:12:46,045 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 02:12:46,045 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 02:12:46,046 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 02:12:46,046 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 02:12:46,046 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 02:12:46,047 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 02:12:46,047 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 02:12:46,047 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 02:12:46,067 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i[342209,342222] [2021-11-07 02:12:46,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:46,204 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:12:46,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13e53980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:46, skipping insertion in model container [2021-11-07 02:12:46,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:46,206 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:12:46,208 INFO L168 Benchmark]: Toolchain (without parser) took 2592.87 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 80.7 MB in the beginning and 54.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:46,209 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 62.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:12:46,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2588.29 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 80.7 MB in the beginning and 54.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:12:46,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 62.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2588.29 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 80.7 MB in the beginning and 54.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3972]: 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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 34bfb407ab3285beb6e4618a31251a3cfac86b629af8c3915889881b8af28c9e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:12:48,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:12:48,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:12:48,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:12:48,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:12:48,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:12:48,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:12:48,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:12:48,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:12:48,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:12:48,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:12:48,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:12:48,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:12:48,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:12:48,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:12:48,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:12:48,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:12:48,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:12:48,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:12:48,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:12:48,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:12:48,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:12:48,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:12:48,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:12:48,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:12:48,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:12:48,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:12:48,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:12:48,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:12:48,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:12:48,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:12:48,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:12:48,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:12:48,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:12:48,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:12:48,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:12:48,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:12:48,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:12:48,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:12:48,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:12:48,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:12:48,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:12:48,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:12:48,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:12:48,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:12:48,558 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:12:48,559 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:12:48,559 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:12:48,559 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:12:48,559 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:12:48,560 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:12:48,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:12:48,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:12:48,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:12:48,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:12:48,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:12:48,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:12:48,564 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:12:48,564 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:12:48,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:12:48,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:12:48,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:12:48,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:12:48,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:12:48,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:12:48,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:12:48,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:12:48,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:12:48,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:12:48,567 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:12:48,567 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:12:48,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:12:48,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:12:48,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:12:48,568 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bfb407ab3285beb6e4618a31251a3cfac86b629af8c3915889881b8af28c9e [2021-11-07 02:12:48,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:12:48,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:12:48,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:12:48,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:12:48,994 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:12:48,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-07 02:12:49,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/c8d4d01a3/b8a2e6e9525b43f7bc73bf6bc5c07199/FLAG76e438c78 [2021-11-07 02:12:50,018 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:12:50,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-07 02:12:50,062 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/c8d4d01a3/b8a2e6e9525b43f7bc73bf6bc5c07199/FLAG76e438c78 [2021-11-07 02:12:50,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/data/c8d4d01a3/b8a2e6e9525b43f7bc73bf6bc5c07199 [2021-11-07 02:12:50,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:12:50,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:12:50,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:50,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:12:50,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:12:50,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:50" (1/1) ... [2021-11-07 02:12:50,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1363da20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:50, skipping insertion in model container [2021-11-07 02:12:50,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:12:50" (1/1) ... [2021-11-07 02:12:50,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:12:50,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:12:53,441 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i[342209,342222] [2021-11-07 02:12:53,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:53,543 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:12:53,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:12:54,060 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i[342209,342222] [2021-11-07 02:12:54,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:54,124 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:12:54,666 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_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i[342209,342222] [2021-11-07 02:12:54,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:12:54,921 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:12:54,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54 WrapperNode [2021-11-07 02:12:54,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:12:54,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:12:54,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:12:54,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:12:54,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:55,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:55,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:12:55,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:12:55,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:12:55,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:12:55,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:55,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:12:56,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:12:56,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:12:56,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:12:56,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (1/1) ... [2021-11-07 02:12:56,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:12:57,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:12:57,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:12:57,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:12:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:12:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-07 02:12:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:12:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kthread_waitmsgs [2021-11-07 02:12:57,063 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kthread_waitmsgs [2021-11-07 02:12:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:12:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_opencomplete_uv [2021-11-07 02:12:57,063 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_opencomplete_uv [2021-11-07 02:12:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:12:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:12:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:12:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 02:12:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_connect [2021-11-07 02:12:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_connect [2021-11-07 02:12:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_check_remote_hb [2021-11-07 02:12:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_check_remote_hb [2021-11-07 02:12:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_received_payload_uv [2021-11-07 02:12:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_received_payload_uv [2021-11-07 02:12:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kthread_start [2021-11-07 02:12:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kthread_start [2021-11-07 02:12:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_create_kthreads [2021-11-07 02:12:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_create_kthreads [2021-11-07 02:12:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:12:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_indicate_partition_engaged_uv [2021-11-07 02:12:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_indicate_partition_engaged_uv [2021-11-07 02:12:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_openclose_chctl_flags [2021-11-07 02:12:57,067 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_openclose_chctl_flags [2021-11-07 02:12:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:12:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 02:12:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_closereply_uv [2021-11-07 02:12:57,067 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_closereply_uv [2021-11-07 02:12:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_connect_channel [2021-11-07 02:12:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_connect_channel [2021-11-07 02:12:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:12:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:12:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:12:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:12:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:12:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activating [2021-11-07 02:12:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activating [2021-11-07 02:12:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:12:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_deactivate_partition [2021-11-07 02:12:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_deactivate_partition [2021-11-07 02:12:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:12:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_indicate_partition_disengaged_uv [2021-11-07 02:12:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_indicate_partition_disengaged_uv [2021-11-07 02:12:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:12:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:12:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disconnect_channel [2021-11-07 02:12:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disconnect_channel [2021-11-07 02:12:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:12:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_channel_mgr [2021-11-07 02:12:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_channel_mgr [2021-11-07 02:12:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_openrequest_uv [2021-11-07 02:12:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_openrequest_uv [2021-11-07 02:12:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_ch_structures [2021-11-07 02:12:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_ch_structures [2021-11-07 02:12:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_part_uv [2021-11-07 02:12:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_part_uv [2021-11-07 02:12:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_closerequest_uv [2021-11-07 02:12:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_closerequest_uv [2021-11-07 02:12:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:12:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:12:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_ch_uv [2021-11-07 02:12:57,074 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_ch_uv [2021-11-07 02:12:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_sent_chctl_flags [2021-11-07 02:12:57,074 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_sent_chctl_flags [2021-11-07 02:12:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:12:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:12:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:12:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:12:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:12:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_openreply_uv [2021-11-07 02:12:57,075 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_openreply_uv [2021-11-07 02:12:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_hb_checker [2021-11-07 02:12:57,076 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_hb_checker [2021-11-07 02:12:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_deactivation_uv [2021-11-07 02:12:57,076 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_deactivation_uv [2021-11-07 02:12:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_going_down [2021-11-07 02:12:57,076 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_going_down [2021-11-07 02:12:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:12:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:12:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:12:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:12:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:12:57,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:12:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:12:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:12:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 02:12:57,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 02:12:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:12:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:17:34,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:17:34,789 INFO L299 CfgBuilder]: Removed 6166 assume(true) statements. [2021-11-07 02:17:34,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:34 BoogieIcfgContainer [2021-11-07 02:17:34,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:17:34,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:17:34,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:17:34,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:17:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:12:50" (1/3) ... [2021-11-07 02:17:34,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64edb710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:34, skipping insertion in model container [2021-11-07 02:17:34,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:54" (2/3) ... [2021-11-07 02:17:34,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64edb710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:34, skipping insertion in model container [2021-11-07 02:17:34,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:34" (3/3) ... [2021-11-07 02:17:34,814 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-07 02:17:34,821 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:17:34,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-07 02:17:34,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:17:34,934 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:17:34,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-07 02:17:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 5424 states, 5193 states have (on average 1.388792605430387) internal successors, (7212), 5284 states have internal predecessors, (7212), 171 states have call successors, (171), 29 states have call predecessors, (171), 29 states have return successors, (171), 145 states have call predecessors, (171), 171 states have call successors, (171) [2021-11-07 02:17:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:17:35,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:35,076 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] [2021-11-07 02:17:35,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:17:35,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 790055335, now seen corresponding path program 1 times [2021-11-07 02:17:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:35,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891917878] [2021-11-07 02:17:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:35,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:35,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:35,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:17:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:57,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:17:57,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:17:57,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:17:58,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:58,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891917878] [2021-11-07 02:17:58,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891917878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:58,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:58,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:17:58,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024769543] [2021-11-07 02:17:58,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:17:58,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:17:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:17:58,303 INFO L87 Difference]: Start difference. First operand has 5424 states, 5193 states have (on average 1.388792605430387) internal successors, (7212), 5284 states have internal predecessors, (7212), 171 states have call successors, (171), 29 states have call predecessors, (171), 29 states have return successors, (171), 145 states have call predecessors, (171), 171 states have call successors, (171) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:58,745 INFO L93 Difference]: Finished difference Result 10844 states and 15274 transitions. [2021-11-07 02:17:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:17:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 38 [2021-11-07 02:17:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:58,827 INFO L225 Difference]: With dead ends: 10844 [2021-11-07 02:17:58,827 INFO L226 Difference]: Without dead ends: 5304 [2021-11-07 02:17:58,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:17:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2021-11-07 02:17:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 5304. [2021-11-07 02:17:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5074 states have (on average 1.3565234528971226) internal successors, (6883), 5164 states have internal predecessors, (6883), 171 states have call successors, (171), 29 states have call predecessors, (171), 29 states have return successors, (171), 145 states have call predecessors, (171), 171 states have call successors, (171) [2021-11-07 02:17:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 7225 transitions. [2021-11-07 02:17:59,309 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 7225 transitions. Word has length 38 [2021-11-07 02:17:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:59,310 INFO L470 AbstractCegarLoop]: Abstraction has 5304 states and 7225 transitions. [2021-11-07 02:17:59,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:17:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 7225 transitions. [2021-11-07 02:17:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 02:17:59,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:59,323 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] [2021-11-07 02:17:59,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:17:59,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:59,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:17:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1157788627, now seen corresponding path program 1 times [2021-11-07 02:17:59,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:59,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628153174] [2021-11-07 02:17:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:59,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:59,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:59,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:59,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:18:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:21,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:18:21,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:21,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:18:21,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:21,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628153174] [2021-11-07 02:18:21,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628153174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:21,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:18:21,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:18:21,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370797037] [2021-11-07 02:18:21,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:18:21,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:18:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:21,922 INFO L87 Difference]: Start difference. First operand 5304 states and 7225 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:23,145 INFO L93 Difference]: Finished difference Result 10607 states and 14467 transitions. [2021-11-07 02:18:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:18:23,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 02:18:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:18:23,199 INFO L225 Difference]: With dead ends: 10607 [2021-11-07 02:18:23,199 INFO L226 Difference]: Without dead ends: 5323 [2021-11-07 02:18:23,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:18:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2021-11-07 02:18:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5323. [2021-11-07 02:18:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5093 states have (on average 1.3551934027096013) internal successors, (6902), 5183 states have internal predecessors, (6902), 171 states have call successors, (171), 29 states have call predecessors, (171), 29 states have return successors, (171), 145 states have call predecessors, (171), 171 states have call successors, (171) [2021-11-07 02:18:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 7244 transitions. [2021-11-07 02:18:23,470 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 7244 transitions. Word has length 38 [2021-11-07 02:18:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:18:23,470 INFO L470 AbstractCegarLoop]: Abstraction has 5323 states and 7244 transitions. [2021-11-07 02:18:23,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 7244 transitions. [2021-11-07 02:18:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 02:18:23,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:18:23,477 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] [2021-11-07 02:18:23,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 02:18:23,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:18:23,699 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:18:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:18:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2089120659, now seen corresponding path program 1 times [2021-11-07 02:18:23,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:18:23,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162098217] [2021-11-07 02:18:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:23,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:18:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:18:23,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:18:23,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:18:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:44,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 3535 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:18:44,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:45,097 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 02:18:45,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:45,802 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 02:18:45,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:18:45,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162098217] [2021-11-07 02:18:45,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162098217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:45,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1031145786] [2021-11-07 02:18:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:45,804 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:18:45,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:18:45,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:18:45,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:18:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:50,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 3535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:18:50,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:50,746 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 02:18:50,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:51,184 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 02:18:51,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1031145786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:51,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:18:51,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:18:51,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906826243] [2021-11-07 02:18:51,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:18:51,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:18:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:18:51,189 INFO L87 Difference]: Start difference. First operand 5323 states and 7244 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:18:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:18:59,998 INFO L93 Difference]: Finished difference Result 8714 states and 12014 transitions. [2021-11-07 02:19:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 02:19:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:00,065 INFO L225 Difference]: With dead ends: 8714 [2021-11-07 02:19:00,066 INFO L226 Difference]: Without dead ends: 8654 [2021-11-07 02:19:00,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8654 states. [2021-11-07 02:19:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8654 to 8577. [2021-11-07 02:19:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8577 states, 8248 states have (on average 1.3609359844810862) internal successors, (11225), 8361 states have internal predecessors, (11225), 254 states have call successors, (254), 48 states have call predecessors, (254), 48 states have return successors, (369), 214 states have call predecessors, (369), 254 states have call successors, (369) [2021-11-07 02:19:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 11848 transitions. [2021-11-07 02:19:00,454 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 11848 transitions. Word has length 42 [2021-11-07 02:19:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:00,455 INFO L470 AbstractCegarLoop]: Abstraction has 8577 states and 11848 transitions. [2021-11-07 02:19:00,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:19:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 11848 transitions. [2021-11-07 02:19:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 02:19:00,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:00,471 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:00,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:00,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:00,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:00,886 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting xpc_send_activate_IRQ_ch_uvErr0ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:19:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash -519351843, now seen corresponding path program 1 times [2021-11-07 02:19:00,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:00,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683303145] [2021-11-07 02:19:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:00,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:00,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:00,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:00,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:19:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:20,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 3981 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:20,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:20,844 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 02:19:20,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:21,834 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 02:19:21,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:21,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683303145] [2021-11-07 02:19:21,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683303145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:19:21,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2051194596] [2021-11-07 02:19:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:21,835 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:21,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:19:21,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:19:21,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:19:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:26,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 3981 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:26,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:26,727 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 02:19:26,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:27,242 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 02:19:27,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2051194596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:27,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:27,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:19:27,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789903518] [2021-11-07 02:19:27,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:27,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:27,245 INFO L87 Difference]: Start difference. First operand 8577 states and 11848 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:19:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:28,771 INFO L93 Difference]: Finished difference Result 25325 states and 35014 transitions. [2021-11-07 02:19:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:28,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2021-11-07 02:19:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:28,896 INFO L225 Difference]: With dead ends: 25325 [2021-11-07 02:19:28,897 INFO L226 Difference]: Without dead ends: 16777 [2021-11-07 02:19:28,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:19:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16777 states. [2021-11-07 02:19:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16777 to 16723. [2021-11-07 02:19:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16723 states, 16098 states have (on average 1.36259162628898) internal successors, (21935), 16296 states have internal predecessors, (21935), 502 states have call successors, (502), 96 states have call predecessors, (502), 96 states have return successors, (731), 423 states have call predecessors, (731), 502 states have call successors, (731) [2021-11-07 02:19:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16723 states to 16723 states and 23168 transitions. [2021-11-07 02:19:29,639 INFO L78 Accepts]: Start accepts. Automaton has 16723 states and 23168 transitions. Word has length 106 [2021-11-07 02:19:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:29,642 INFO L470 AbstractCegarLoop]: Abstraction has 16723 states and 23168 transitions. [2021-11-07 02:19:29,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:19:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16723 states and 23168 transitions. [2021-11-07 02:19:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:19:29,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:29,660 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:29,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:29,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:30,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:30,083 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting xpc_send_activate_IRQ_ch_uvErr0ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:19:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1071009275, now seen corresponding path program 1 times [2021-11-07 02:19:30,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:30,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966221299] [2021-11-07 02:19:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:30,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:30,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:30,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:30,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:19:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:49,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 3964 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:19:49,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:50,583 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 02:19:50,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:51,654 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 02:19:51,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:51,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966221299] [2021-11-07 02:19:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966221299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:19:51,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043833770] [2021-11-07 02:19:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:51,655 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:19:51,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:19:51,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:19:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:19:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:56,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 3964 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:56,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:56,931 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 02:19:56,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:57,736 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 02:19:57,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043833770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:57,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:19:57,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:19:57,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920450371] [2021-11-07 02:19:57,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:57,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:57,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:19:57,740 INFO L87 Difference]: Start difference. First operand 16723 states and 23168 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:20:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:03,227 INFO L93 Difference]: Finished difference Result 65287 states and 90727 transitions. [2021-11-07 02:20:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:03,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2021-11-07 02:20:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:03,447 INFO L225 Difference]: With dead ends: 65287 [2021-11-07 02:20:03,448 INFO L226 Difference]: Without dead ends: 48593 [2021-11-07 02:20:03,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:20:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48593 states. [2021-11-07 02:20:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48593 to 48353. [2021-11-07 02:20:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48353 states, 46590 states have (on average 1.3623738999785362) internal successors, (63473), 47106 states have internal predecessors, (63473), 1456 states have call successors, (1456), 284 states have call predecessors, (1456), 280 states have return successors, (2451), 1223 states have call predecessors, (2451), 1456 states have call successors, (2451) [2021-11-07 02:20:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48353 states to 48353 states and 67380 transitions. [2021-11-07 02:20:05,775 INFO L78 Accepts]: Start accepts. Automaton has 48353 states and 67380 transitions. Word has length 103 [2021-11-07 02:20:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:05,777 INFO L470 AbstractCegarLoop]: Abstraction has 48353 states and 67380 transitions. [2021-11-07 02:20:05,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:20:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 48353 states and 67380 transitions. [2021-11-07 02:20:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 02:20:05,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:05,806 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:05,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:06,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:06,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:06,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting xpc_send_activate_IRQ_ch_uvErr0ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:20:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2051422823, now seen corresponding path program 1 times [2021-11-07 02:20:06,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:06,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343651436] [2021-11-07 02:20:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:06,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:06,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:06,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:06,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:20:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:26,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 3976 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:20:26,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:26,803 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 02:20:26,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:27,742 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 02:20:27,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:27,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343651436] [2021-11-07 02:20:27,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343651436] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:20:27,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [90455597] [2021-11-07 02:20:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:27,743 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:27,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:20:27,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:20:27,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:20:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:32,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 3976 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:32,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:33,072 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 02:20:33,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:33,585 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 02:20:33,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [90455597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:33,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:20:33,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:20:33,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704495765] [2021-11-07 02:20:33,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:20:33,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:20:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:20:33,587 INFO L87 Difference]: Start difference. First operand 48353 states and 67380 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:20:36,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:36,586 INFO L93 Difference]: Finished difference Result 141695 states and 197242 transitions. [2021-11-07 02:20:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:20:36,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2021-11-07 02:20:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:37,155 INFO L225 Difference]: With dead ends: 141695 [2021-11-07 02:20:37,156 INFO L226 Difference]: Without dead ends: 93371 [2021-11-07 02:20:37,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:20:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93371 states. [2021-11-07 02:20:40,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93371 to 93239. [2021-11-07 02:20:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93239 states, 89866 states have (on average 1.3603587563705961) internal successors, (122250), 90836 states have internal predecessors, (122250), 2786 states have call successors, (2786), 568 states have call predecessors, (2786), 560 states have return successors, (4740), 2338 states have call predecessors, (4740), 2786 states have call successors, (4740) [2021-11-07 02:20:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93239 states to 93239 states and 129776 transitions. [2021-11-07 02:20:41,207 INFO L78 Accepts]: Start accepts. Automaton has 93239 states and 129776 transitions. Word has length 106 [2021-11-07 02:20:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:41,210 INFO L470 AbstractCegarLoop]: Abstraction has 93239 states and 129776 transitions. [2021-11-07 02:20:41,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:20:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 93239 states and 129776 transitions. [2021-11-07 02:20:41,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 02:20:41,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:41,240 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:41,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:41,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:41,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:20:41,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting xpc_send_activate_IRQ_ch_uvErr0ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:20:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2120381105, now seen corresponding path program 1 times [2021-11-07 02:20:41,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:41,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102002728] [2021-11-07 02:20:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:41,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:41,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:41,677 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:41,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:21:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 3971 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:01,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:02,469 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 02:21:02,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:03,305 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 02:21:03,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102002728] [2021-11-07 02:21:03,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102002728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1117773377] [2021-11-07 02:21:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:03,305 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:03,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:03,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:03,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:21:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:08,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3971 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:08,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:09,160 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 02:21:09,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:10,024 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 02:21:10,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1117773377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:10,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:10,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:21:10,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862361867] [2021-11-07 02:21:10,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:10,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:10,026 INFO L87 Difference]: Start difference. First operand 93239 states and 129776 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:21:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:13,845 INFO L93 Difference]: Finished difference Result 184397 states and 256509 transitions. [2021-11-07 02:21:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2021-11-07 02:21:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:14,186 INFO L225 Difference]: With dead ends: 184397 [2021-11-07 02:21:14,186 INFO L226 Difference]: Without dead ends: 91187 [2021-11-07 02:21:14,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91187 states. [2021-11-07 02:21:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91187 to 91187. [2021-11-07 02:21:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91187 states, 87874 states have (on average 1.358149168127091) internal successors, (119346), 88820 states have internal predecessors, (119346), 2726 states have call successors, (2726), 568 states have call predecessors, (2726), 560 states have return successors, (4668), 2290 states have call predecessors, (4668), 2726 states have call successors, (4668) [2021-11-07 02:21:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91187 states to 91187 states and 126740 transitions. [2021-11-07 02:21:18,203 INFO L78 Accepts]: Start accepts. Automaton has 91187 states and 126740 transitions. Word has length 106 [2021-11-07 02:21:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:18,204 INFO L470 AbstractCegarLoop]: Abstraction has 91187 states and 126740 transitions. [2021-11-07 02:21:18,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:21:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 91187 states and 126740 transitions. [2021-11-07 02:21:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 02:21:18,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:18,222 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:18,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:18,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:18,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:18,652 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting xpc_send_activate_IRQ_ch_uvErr0ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:21:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -306889902, now seen corresponding path program 1 times [2021-11-07 02:21:18,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:18,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553174203] [2021-11-07 02:21:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:18,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:18,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:18,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:18,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:21:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:38,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:21:38,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:39,288 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 02:21:39,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:40,202 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 02:21:40,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:40,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553174203] [2021-11-07 02:21:40,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553174203] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:40,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2022496861] [2021-11-07 02:21:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:40,204 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:40,211 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:40,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:21:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:45,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:45,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:45,692 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 02:21:45,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:46,236 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 02:21:46,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2022496861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:46,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:21:46,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:21:46,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986578455] [2021-11-07 02:21:46,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:46,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:46,238 INFO L87 Difference]: Start difference. First operand 91187 states and 126740 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:21:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:56,274 INFO L93 Difference]: Finished difference Result 261403 states and 365863 transitions. [2021-11-07 02:21:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:56,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2021-11-07 02:21:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:57,006 INFO L225 Difference]: With dead ends: 261403 [2021-11-07 02:21:57,006 INFO L226 Difference]: Without dead ends: 170245 [2021-11-07 02:21:57,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:21:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170245 states. [2021-11-07 02:22:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170245 to 170165. [2021-11-07 02:22:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170165 states, 163400 states have (on average 1.3748102815177479) internal successors, (224644), 165170 states have internal predecessors, (224644), 5458 states have call successors, (5458), 1288 states have call predecessors, (5458), 1280 states have return successors, (8892), 4686 states have call predecessors, (8892), 5458 states have call successors, (8892) [2021-11-07 02:22:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170165 states to 170165 states and 238994 transitions. [2021-11-07 02:22:04,899 INFO L78 Accepts]: Start accepts. Automaton has 170165 states and 238994 transitions. Word has length 101 [2021-11-07 02:22:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:04,900 INFO L470 AbstractCegarLoop]: Abstraction has 170165 states and 238994 transitions. [2021-11-07 02:22:04,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:22:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 170165 states and 238994 transitions. [2021-11-07 02:22:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 02:22:05,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:05,001 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:05,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:05,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:05,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:05,423 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting xpc_send_activate_IRQ_ch_uvErr0ASSERT_VIOLATIONERROR_FUNCTION === [xpc_send_activate_IRQ_part_uvErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~C_INTErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 02:22:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1454588929, now seen corresponding path program 1 times [2021-11-07 02:22:05,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:05,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085765739] [2021-11-07 02:22:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:05,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:05,434 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:05,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:22:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:25,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 4088 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:22:25,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 02:22:26,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 02:22:27,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:27,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085765739] [2021-11-07 02:22:27,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085765739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:27,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373915252] [2021-11-07 02:22:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:27,684 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:27,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:27,685 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:27,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e9cc01-960f-4054-ac84-f6bc1eb06c06/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:22:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:32,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 4088 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:22:32,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:22:33,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:22:34,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373915252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:34,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:22:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 02:22:34,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046792694] [2021-11-07 02:22:34,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:22:34,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:22:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:22:34,864 INFO L87 Difference]: Start difference. First operand 170165 states and 238994 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 02:22:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:46,692 INFO L93 Difference]: Finished difference Result 377146 states and 530017 transitions. [2021-11-07 02:22:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:22:46,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 133 [2021-11-07 02:22:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:47,407 INFO L225 Difference]: With dead ends: 377146 [2021-11-07 02:22:47,407 INFO L226 Difference]: Without dead ends: 203662 [2021-11-07 02:22:47,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:22:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203662 states.