./Ultimate.py --spec ../../sv-benchmarks/c/Systems_DeviceDriversLinux64_ReachSafety.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f180fb5c8fde667ce04b904ee19ef714d33f5356 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f180fb5c8fde667ce04b904ee19ef714d33f5356 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:24:09,593 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:24:09,594 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:24:09,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:24:09,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:24:09,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:24:09,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:24:09,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:24:09,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:24:09,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:24:09,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:24:09,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:24:09,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:24:09,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:24:09,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:24:09,615 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:24:09,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:24:09,617 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:24:09,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:24:09,629 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:24:09,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:24:09,631 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:24:09,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:24:09,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:24:09,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:24:09,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:24:09,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:24:09,636 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:24:09,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:24:09,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:24:09,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:24:09,640 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:24:09,640 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:24:09,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:24:09,641 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:24:09,642 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:24:09,643 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-18 12:24:09,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:24:09,655 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:24:09,656 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:24:09,656 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:24:09,656 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:24:09,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:24:09,657 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:24:09,657 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:24:09,657 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:24:09,657 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:24:09,657 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-18 12:24:09,658 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:24:09,659 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:24:09,659 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:24:09,659 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:24:09,660 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:24:09,661 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:24:09,661 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:24:09,661 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:24:09,661 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:24:09,661 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:24:09,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:24:09,663 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:24:09,664 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-18 12:24:09,665 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan 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(__VERIFIER_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 -> f180fb5c8fde667ce04b904ee19ef714d33f5356 [2018-11-18 12:24:09,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:24:09,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:24:09,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:24:09,720 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:24:09,720 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:24:09,721 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 12:24:09,790 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/e2a7d03ee/e35a393feaf14659b95933b4ff0bc2ff/FLAGb3255ce80 [2018-11-18 12:24:10,349 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:24:10,350 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 12:24:10,381 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/e2a7d03ee/e35a393feaf14659b95933b4ff0bc2ff/FLAGb3255ce80 [2018-11-18 12:24:10,526 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/e2a7d03ee/e35a393feaf14659b95933b4ff0bc2ff [2018-11-18 12:24:10,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:24:10,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:24:10,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:24:10,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:24:10,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:24:10,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:24:10" (1/1) ... [2018-11-18 12:24:10,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fb43e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:10, skipping insertion in model container [2018-11-18 12:24:10,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:24:10" (1/1) ... [2018-11-18 12:24:10,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:24:10,622 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:24:13,396 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:24:13,432 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:24:14,894 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:24:15,016 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:24:15,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15 WrapperNode [2018-11-18 12:24:15,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:24:15,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:24:15,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:24:15,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:24:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:24:15,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:24:15,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:24:15,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:24:15,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... [2018-11-18 12:24:15,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:24:15,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:24:15,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:24:15,335 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:24:15,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:24:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_3 [2018-11-18 12:24:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2018-11-18 12:24:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2018-11-18 12:24:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure dlci_to_q922 [2018-11-18 12:24:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure dlci_to_q922 [2018-11-18 12:24:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2018-11-18 12:24:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 12:24:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_recv [2018-11-18 12:24:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_recv [2018-11-18 12:24:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2018-11-18 12:24:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2018-11-18 12:24:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2018-11-18 12:24:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2018-11-18 12:24:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2018-11-18 12:24:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2018-11-18 12:24:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:24:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2018-11-18 12:24:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2018-11-18 12:24:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure skb_realloc_headroom [2018-11-18 12:24:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 12:24:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 12:24:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 12:24:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-11-18 12:24:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure dev_queue_xmit [2018-11-18 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_3 [2018-11-18 12:24:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_3 [2018-11-18 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure state [2018-11-18 12:24:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2018-11-18 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2018-11-18 12:24:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2018-11-18 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 12:24:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure fr_hard_header [2018-11-18 12:24:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_hard_header [2018-11-18 12:24:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure find_pvc [2018-11-18 12:24:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure find_pvc [2018-11-18 12:24:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2018-11-18 12:24:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2018-11-18 12:24:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2018-11-18 12:24:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure fr_stop [2018-11-18 12:24:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_stop [2018-11-18 12:24:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2018-11-18 12:24:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2018-11-18 12:24:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2018-11-18 12:24:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2018-11-18 12:24:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2018-11-18 12:24:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 12:24:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 12:24:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2018-11-18 12:24:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2018-11-18 12:24:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_open [2018-11-18 12:24:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_open [2018-11-18 12:24:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2018-11-18 12:24:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_carrier [2018-11-18 12:24:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_carrier [2018-11-18 12:24:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-18 12:24:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-18 12:24:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_2 [2018-11-18 12:24:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_on [2018-11-18 12:24:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_on [2018-11-18 12:24:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2018-11-18 12:24:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2018-11-18 12:24:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure eth_random_addr [2018-11-18 12:24:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_random_addr [2018-11-18 12:24:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2018-11-18 12:24:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdevice [2018-11-18 12:24:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2018-11-18 12:24:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2018-11-18 12:24:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-18 12:24:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_queue [2018-11-18 12:24:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2018-11-18 12:24:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure fr_rx [2018-11-18 12:24:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_rx [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_ioctl [2018-11-18 12:24:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_ioctl [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2018-11-18 12:24:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2018-11-18 12:24:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 12:24:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 12:24:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure fr_ioctl [2018-11-18 12:24:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_ioctl [2018-11-18 12:24:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2018-11-18 12:24:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2018-11-18 12:24:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2018-11-18 12:24:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2018-11-18 12:24:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2018-11-18 12:24:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_network_header [2018-11-18 12:24:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_network_header [2018-11-18 12:24:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2018-11-18 12:24:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2018-11-18 12:24:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 12:24:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 12:24:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2018-11-18 12:24:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_3 [2018-11-18 12:24:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2018-11-18 12:24:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2018-11-18 12:24:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 12:24:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 12:24:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_open_2 [2018-11-18 12:24:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:24:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:24:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2018-11-18 12:24:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2018-11-18 12:24:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2018-11-18 12:24:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2018-11-18 12:24:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2018-11-18 12:24:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2018-11-18 12:24:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2018-11-18 12:24:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_nextseq [2018-11-18 12:24:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_nextseq [2018-11-18 12:24:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2018-11-18 12:24:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2018-11-18 12:24:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2018-11-18 12:24:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2018-11-18 12:24:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure fr_log_dlci_active [2018-11-18 12:24:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_log_dlci_active [2018-11-18 12:24:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2018-11-18 12:24:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2018-11-18 12:24:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-18 12:24:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-18 12:24:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:24:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:24:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 12:24:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure delete_unused_pvcs [2018-11-18 12:24:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_unused_pvcs [2018-11-18 12:24:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2018-11-18 12:24:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2018-11-18 12:24:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2018-11-18 12:24:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-11-18 12:24:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-11-18 12:24:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure fr_destroy [2018-11-18 12:24:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_destroy [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_is_used [2018-11-18 12:24:15,443 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_is_used [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2018-11-18 12:24:15,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2018-11-18 12:24:15,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2018-11-18 12:24:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2018-11-18 12:24:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2018-11-18 12:24:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure fr_set_link_state [2018-11-18 12:24:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_set_link_state [2018-11-18 12:24:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_send [2018-11-18 12:24:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_send [2018-11-18 12:24:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2018-11-18 12:24:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:24:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2018-11-18 12:24:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2018-11-18 12:24:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2018-11-18 12:24:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2018-11-18 12:24:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure fr_del_pvc [2018-11-18 12:24:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_del_pvc [2018-11-18 12:24:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure fr_close [2018-11-18 12:24:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_close [2018-11-18 12:24:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2018-11-18 12:24:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_xmit [2018-11-18 12:24:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_xmit [2018-11-18 12:24:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2018-11-18 12:24:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure fr_start [2018-11-18 12:24:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_start [2018-11-18 12:24:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2018-11-18 12:24:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-18 12:24:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_close [2018-11-18 12:24:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_close [2018-11-18 12:24:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2018-11-18 12:24:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2018-11-18 12:24:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure fr_add_pvc [2018-11-18 12:24:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_add_pvc [2018-11-18 12:24:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-18 12:24:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-18 12:24:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2018-11-18 12:24:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2018-11-18 12:24:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure q922_to_dlci [2018-11-18 12:24:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure q922_to_dlci [2018-11-18 12:24:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2018-11-18 12:24:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2018-11-18 12:24:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2018-11-18 12:24:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2018-11-18 12:24:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2018-11-18 12:24:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_p [2018-11-18 12:24:15,452 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_p [2018-11-18 12:24:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_2 [2018-11-18 12:24:15,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_2 [2018-11-18 12:24:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_1 [2018-11-18 12:24:15,452 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_1 [2018-11-18 12:24:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2018-11-18 12:24:15,452 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2018-11-18 12:24:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure get_random_bytes [2018-11-18 12:24:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2018-11-18 12:24:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_14 [2018-11-18 12:24:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_14 [2018-11-18 12:24:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2018-11-18 12:24:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure add_pvc [2018-11-18 12:24:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pvc [2018-11-18 12:24:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2018-11-18 12:24:15,453 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2018-11-18 12:24:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2018-11-18 12:24:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2018-11-18 12:24:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2018-11-18 12:24:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 12:24:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 12:24:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2018-11-18 12:24:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2018-11-18 12:24:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-18 12:24:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-18 12:24:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2018-11-18 12:24:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2018-11-18 12:24:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2018-11-18 12:24:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2018-11-18 12:24:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2018-11-18 12:24:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:24:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:24:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure fr_timer [2018-11-18 12:24:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_timer [2018-11-18 12:24:23,827 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:24:23,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:24:23 BoogieIcfgContainer [2018-11-18 12:24:23,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:24:23,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:24:23,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:24:23,832 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:24:23,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:24:10" (1/3) ... [2018-11-18 12:24:23,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dad5100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:24:23, skipping insertion in model container [2018-11-18 12:24:23,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:15" (2/3) ... [2018-11-18 12:24:23,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dad5100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:24:23, skipping insertion in model container [2018-11-18 12:24:23,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:24:23" (3/3) ... [2018-11-18 12:24:23,835 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 12:24:23,846 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:24:23,856 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:24:23,870 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:24:23,912 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:24:23,912 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:24:23,912 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:24:23,913 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:24:23,913 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:24:23,913 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:24:23,913 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:24:23,913 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:24:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states. [2018-11-18 12:24:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-18 12:24:23,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:24:23,978 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:24:23,981 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:24:23,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:24:23,991 INFO L82 PathProgramCache]: Analyzing trace with hash 682171976, now seen corresponding path program 1 times [2018-11-18 12:24:23,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:24:24,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:24:24,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:24:24,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:24:24,060 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:24:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:24:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 12:24:24,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:24:24,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:24:24,487 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:24:24,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:24:24,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:24:24,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:24:24,501 INFO L87 Difference]: Start difference. First operand 1206 states. Second operand 3 states. [2018-11-18 12:24:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:24:26,824 INFO L93 Difference]: Finished difference Result 3528 states and 5067 transitions. [2018-11-18 12:24:26,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:24:26,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-18 12:24:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:24:26,864 INFO L225 Difference]: With dead ends: 3528 [2018-11-18 12:24:26,864 INFO L226 Difference]: Without dead ends: 2327 [2018-11-18 12:24:26,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:24:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2018-11-18 12:24:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2327. [2018-11-18 12:24:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2018-11-18 12:24:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3290 transitions. [2018-11-18 12:24:27,087 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3290 transitions. Word has length 59 [2018-11-18 12:24:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:24:27,087 INFO L480 AbstractCegarLoop]: Abstraction has 2327 states and 3290 transitions. [2018-11-18 12:24:27,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:24:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3290 transitions. [2018-11-18 12:24:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 12:24:27,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:24:27,095 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:24:27,096 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:24:27,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:24:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1665239689, now seen corresponding path program 1 times [2018-11-18 12:24:27,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:24:27,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:24:27,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:24:27,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:24:27,103 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:24:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:24:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 12:24:27,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:24:27,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:24:27,485 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:24:27,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:24:27,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:24:27,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:24:27,488 INFO L87 Difference]: Start difference. First operand 2327 states and 3290 transitions. Second operand 5 states. [2018-11-18 12:24:27,707 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-18 12:24:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:24:28,012 INFO L93 Difference]: Finished difference Result 4631 states and 6552 transitions. [2018-11-18 12:24:28,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:24:28,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2018-11-18 12:24:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:24:28,029 INFO L225 Difference]: With dead ends: 4631 [2018-11-18 12:24:28,030 INFO L226 Difference]: Without dead ends: 2326 [2018-11-18 12:24:28,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:24:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2018-11-18 12:24:28,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 2326. [2018-11-18 12:24:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2326 states. [2018-11-18 12:24:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3286 transitions. [2018-11-18 12:24:28,160 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3286 transitions. Word has length 62 [2018-11-18 12:24:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:24:28,160 INFO L480 AbstractCegarLoop]: Abstraction has 2326 states and 3286 transitions. [2018-11-18 12:24:28,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:24:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3286 transitions. [2018-11-18 12:24:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-18 12:24:28,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:24:28,171 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2018-11-18 12:24:28,172 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:24:28,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:24:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1542982774, now seen corresponding path program 1 times [2018-11-18 12:24:28,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:24:28,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:24:28,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:24:28,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:24:28,178 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:24:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:24:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-18 12:24:28,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:24:28,591 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 12:24:28,592 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 95 with the following transitions: [2018-11-18 12:24:28,595 INFO L202 CegarAbsIntRunner]: [300], [301], [310], [311], [313], [314], [853], [1128], [1129], [1229], [1231], [1233], [1235], [1237], [1239], [1241], [1253], [1256], [1259], [1262], [1265], [1267], [1271], [1274], [1277], [1279], [1282], [1284], [1293], [1773], [1774], [2354], [2356], [2357], [2362], [2363], [2403], [2405], [2410], [2416], [2419], [2423], [2428], [2429], [2614], [2615], [2616], [2617], [2764], [2765], [2766], [2767], [2768], [2769], [2770], [2771], [2772], [2773], [2776], [2777], [2778], [2779], [2780], [2781], [2782], [2783], [2832], [3020], [3021], [3032], [3033], [3034], [3040], [3041], [3042] [2018-11-18 12:24:28,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 12:24:28,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 12:24:28,792 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:209) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:291) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.AssumptionBuilder.constructBoogieAssumeStatement(AssumptionBuilder.java:75) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.getCachedCodeBlock(TermConjunctEvaluator.java:273) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:296) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-18 12:24:28,796 INFO L168 Benchmark]: Toolchain (without parser) took 18267.66 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 752.9 MB). Free memory was 949.1 MB in the beginning and 1.2 GB in the end (delta: -255.2 MB). Peak memory consumption was 497.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:24:28,807 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:24:28,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4486.84 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 751.3 MB). Free memory was 949.1 MB in the beginning and 1.5 GB in the end (delta: -591.5 MB). Peak memory consumption was 620.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:24:28,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.56 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 274.5 kB). Peak memory consumption was 274.5 kB. Max. memory is 11.5 GB. [2018-11-18 12:24:28,808 INFO L168 Benchmark]: Boogie Preprocessor took 221.98 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:24:28,809 INFO L168 Benchmark]: RCFGBuilder took 8493.26 ms. Allocated memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 1.6 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 18.1 MB). Peak memory consumption was 659.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:24:28,809 INFO L168 Benchmark]: TraceAbstraction took 4966.83 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 283.9 MB). Peak memory consumption was 283.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:24:28,813 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 4486.84 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 751.3 MB). Free memory was 949.1 MB in the beginning and 1.5 GB in the end (delta: -591.5 MB). Peak memory consumption was 620.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.56 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 274.5 kB). Peak memory consumption was 274.5 kB. Max. memory is 11.5 GB. * Boogie Preprocessor took 221.98 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 8493.26 ms. Allocated memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 1.6 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 18.1 MB). Peak memory consumption was 659.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4966.83 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 283.9 MB). Peak memory consumption was 283.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 12:24:30,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:24:30,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:24:30,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:24:30,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:24:30,695 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:24:30,697 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:24:30,698 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:24:30,707 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:24:30,707 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:24:30,708 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:24:30,708 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:24:30,709 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:24:30,710 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:24:30,711 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:24:30,712 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:24:30,712 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:24:30,714 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:24:30,715 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:24:30,717 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:24:30,718 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:24:30,719 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:24:30,720 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:24:30,721 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:24:30,721 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:24:30,722 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:24:30,727 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:24:30,728 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:24:30,728 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:24:30,729 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:24:30,729 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:24:30,730 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:24:30,730 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:24:30,730 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:24:30,731 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:24:30,731 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:24:30,732 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2018-11-18 12:24:30,754 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:24:30,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:24:30,755 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:24:30,755 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:24:30,755 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:24:30,755 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:24:30,755 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:24:30,756 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:24:30,756 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:24:30,756 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:24:30,756 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:24:30,757 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:24:30,757 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:24:30,757 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:24:30,757 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:24:30,757 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:24:30,758 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:24:30,759 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:24:30,759 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:24:30,759 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:24:30,759 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:24:30,759 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:24:30,759 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:24:30,760 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:24:30,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:24:30,760 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:24:30,760 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:24:30,760 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:24:30,760 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:24:30,761 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:24:30,761 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:24:30,761 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:24:30,761 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan 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(__VERIFIER_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 -> f180fb5c8fde667ce04b904ee19ef714d33f5356 [2018-11-18 12:24:30,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:24:30,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:24:30,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:24:30,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:24:30,824 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:24:30,825 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 12:24:30,895 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/129743233/fd171c5264b8464388ca8de1885d67ec/FLAG1d2ec3c98 [2018-11-18 12:24:31,520 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:24:31,520 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 12:24:31,563 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/129743233/fd171c5264b8464388ca8de1885d67ec/FLAG1d2ec3c98 [2018-11-18 12:24:31,856 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/data/129743233/fd171c5264b8464388ca8de1885d67ec [2018-11-18 12:24:31,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:24:31,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:24:31,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:24:31,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:24:31,866 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:24:31,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:24:31" (1/1) ... [2018-11-18 12:24:31,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71978888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:31, skipping insertion in model container [2018-11-18 12:24:31,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:24:31" (1/1) ... [2018-11-18 12:24:31,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:24:32,011 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:24:34,808 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:24:34,846 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:24:36,325 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:24:36,465 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:24:36,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36 WrapperNode [2018-11-18 12:24:36,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:24:36,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:24:36,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:24:36,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:24:36,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:24:36,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:24:36,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:24:36,547 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:24:36,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... [2018-11-18 12:24:36,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:24:36,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:24:36,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:24:36,812 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:24:36,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:24:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_3 [2018-11-18 12:24:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2018-11-18 12:24:36,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2018-11-18 12:24:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure dlci_to_q922 [2018-11-18 12:24:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure dlci_to_q922 [2018-11-18 12:24:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-18 12:24:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2018-11-18 12:24:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_recv [2018-11-18 12:24:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_recv [2018-11-18 12:24:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2018-11-18 12:24:36,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2018-11-18 12:24:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-18 12:24:36,871 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2018-11-18 12:24:36,873 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2018-11-18 12:24:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:24:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2018-11-18 12:24:36,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2018-11-18 12:24:36,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 12:24:36,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2018-11-18 12:24:36,874 INFO L130 BoogieDeclarations]: Found specification of procedure skb_realloc_headroom [2018-11-18 12:24:36,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 12:24:36,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 12:24:36,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 12:24:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-11-18 12:24:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure dev_queue_xmit [2018-11-18 12:24:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_3 [2018-11-18 12:24:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_3 [2018-11-18 12:24:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure state [2018-11-18 12:24:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2018-11-18 12:24:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2018-11-18 12:24:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2018-11-18 12:24:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 12:24:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 12:24:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure fr_hard_header [2018-11-18 12:24:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_hard_header [2018-11-18 12:24:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure find_pvc [2018-11-18 12:24:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure find_pvc [2018-11-18 12:24:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2018-11-18 12:24:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2018-11-18 12:24:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2018-11-18 12:24:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure fr_stop [2018-11-18 12:24:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_stop [2018-11-18 12:24:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2018-11-18 12:24:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2018-11-18 12:24:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2018-11-18 12:24:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2018-11-18 12:24:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2018-11-18 12:24:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 12:24:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 12:24:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2018-11-18 12:24:36,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2018-11-18 12:24:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_open [2018-11-18 12:24:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_open [2018-11-18 12:24:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2018-11-18 12:24:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_carrier [2018-11-18 12:24:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_carrier [2018-11-18 12:24:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-18 12:24:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-18 12:24:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_2 [2018-11-18 12:24:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_on [2018-11-18 12:24:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_on [2018-11-18 12:24:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2018-11-18 12:24:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure eth_random_addr [2018-11-18 12:24:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_random_addr [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdevice [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2018-11-18 12:24:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_queue [2018-11-18 12:24:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2018-11-18 12:24:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2018-11-18 12:24:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure fr_rx [2018-11-18 12:24:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_rx [2018-11-18 12:24:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2018-11-18 12:24:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_ioctl [2018-11-18 12:24:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_ioctl [2018-11-18 12:24:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2018-11-18 12:24:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2018-11-18 12:24:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2018-11-18 12:24:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 12:24:36,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 12:24:36,890 INFO L130 BoogieDeclarations]: Found specification of procedure fr_ioctl [2018-11-18 12:24:36,890 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_ioctl [2018-11-18 12:24:36,890 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2018-11-18 12:24:36,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 12:24:36,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2018-11-18 12:24:36,890 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2018-11-18 12:24:36,890 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2018-11-18 12:24:36,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-18 12:24:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2018-11-18 12:24:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2018-11-18 12:24:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2018-11-18 12:24:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_network_header [2018-11-18 12:24:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_network_header [2018-11-18 12:24:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2018-11-18 12:24:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2018-11-18 12:24:36,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 12:24:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 12:24:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2018-11-18 12:24:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_3 [2018-11-18 12:24:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2018-11-18 12:24:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2018-11-18 12:24:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 12:24:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 12:24:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_open_2 [2018-11-18 12:24:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_USHORT~X~C_USHORT~TO~C_INT [2018-11-18 12:24:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_USHORT~X~C_USHORT~TO~C_INT [2018-11-18 12:24:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:24:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:24:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2018-11-18 12:24:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2018-11-18 12:24:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2018-11-18 12:24:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2018-11-18 12:24:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2018-11-18 12:24:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2018-11-18 12:24:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2018-11-18 12:24:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_nextseq [2018-11-18 12:24:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_nextseq [2018-11-18 12:24:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2018-11-18 12:24:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2018-11-18 12:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2018-11-18 12:24:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2018-11-18 12:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure fr_log_dlci_active [2018-11-18 12:24:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_log_dlci_active [2018-11-18 12:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2018-11-18 12:24:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2018-11-18 12:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-18 12:24:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-18 12:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:24:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 12:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure delete_unused_pvcs [2018-11-18 12:24:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_unused_pvcs [2018-11-18 12:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2018-11-18 12:24:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2018-11-18 12:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2018-11-18 12:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-11-18 12:24:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-11-18 12:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure fr_destroy [2018-11-18 12:24:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_destroy [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_is_used [2018-11-18 12:24:36,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_is_used [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2018-11-18 12:24:36,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2018-11-18 12:24:36,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2018-11-18 12:24:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2018-11-18 12:24:36,899 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure fr_set_link_state [2018-11-18 12:24:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_set_link_state [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_send [2018-11-18 12:24:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_send [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:24:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 12:24:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2018-11-18 12:24:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2018-11-18 12:24:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2018-11-18 12:24:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2018-11-18 12:24:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure fr_del_pvc [2018-11-18 12:24:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_del_pvc [2018-11-18 12:24:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure fr_close [2018-11-18 12:24:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_close [2018-11-18 12:24:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2018-11-18 12:24:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_xmit [2018-11-18 12:24:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_xmit [2018-11-18 12:24:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2018-11-18 12:24:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure fr_start [2018-11-18 12:24:36,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_start [2018-11-18 12:24:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2018-11-18 12:24:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-18 12:24:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_close [2018-11-18 12:24:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_close [2018-11-18 12:24:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2018-11-18 12:24:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2018-11-18 12:24:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure fr_add_pvc [2018-11-18 12:24:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_add_pvc [2018-11-18 12:24:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-18 12:24:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-18 12:24:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2018-11-18 12:24:36,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2018-11-18 12:24:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure q922_to_dlci [2018-11-18 12:24:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure q922_to_dlci [2018-11-18 12:24:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2018-11-18 12:24:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2018-11-18 12:24:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2018-11-18 12:24:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2018-11-18 12:24:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2018-11-18 12:24:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_p [2018-11-18 12:24:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_p [2018-11-18 12:24:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_2 [2018-11-18 12:24:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_2 [2018-11-18 12:24:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure choose_timer_1 [2018-11-18 12:24:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_timer_1 [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2018-11-18 12:24:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure get_random_bytes [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync_14 [2018-11-18 12:24:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync_14 [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure add_pvc [2018-11-18 12:24:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pvc [2018-11-18 12:24:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2018-11-18 12:24:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2018-11-18 12:24:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2018-11-18 12:24:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2018-11-18 12:24:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 12:24:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2018-11-18 12:24:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-18 12:24:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2018-11-18 12:24:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2018-11-18 12:24:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2018-11-18 12:24:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:24:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:24:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure fr_timer [2018-11-18 12:24:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_timer [2018-11-18 12:24:51,720 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:24:51,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:24:51 BoogieIcfgContainer [2018-11-18 12:24:51,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:24:51,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:24:51,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:24:51,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:24:51,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:24:31" (1/3) ... [2018-11-18 12:24:51,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e4fa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:24:51, skipping insertion in model container [2018-11-18 12:24:51,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:24:36" (2/3) ... [2018-11-18 12:24:51,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e4fa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:24:51, skipping insertion in model container [2018-11-18 12:24:51,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:24:51" (3/3) ... [2018-11-18 12:24:51,728 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 12:24:51,738 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:24:51,747 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:24:51,761 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:24:51,798 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:24:51,798 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:24:51,799 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:24:51,799 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:24:51,799 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:24:51,799 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:24:51,799 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:24:51,799 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:24:51,799 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:24:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states. [2018-11-18 12:24:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-18 12:24:51,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:24:51,868 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:24:51,870 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:24:51,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:24:51,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1169082168, now seen corresponding path program 1 times [2018-11-18 12:24:51,882 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:24:51,883 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:24:51,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:24:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:24:52,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:24:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 12:24:52,326 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:24:52,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:24:52,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:24:52,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:24:52,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:24:52,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:24:52,353 INFO L87 Difference]: Start difference. First operand 1206 states. Second operand 3 states. [2018-11-18 12:24:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:24:54,872 INFO L93 Difference]: Finished difference Result 3478 states and 4995 transitions. [2018-11-18 12:24:54,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:24:54,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-18 12:24:54,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:24:54,904 INFO L225 Difference]: With dead ends: 3478 [2018-11-18 12:24:54,904 INFO L226 Difference]: Without dead ends: 2219 [2018-11-18 12:24:54,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:24:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2018-11-18 12:24:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2219. [2018-11-18 12:24:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2018-11-18 12:24:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3142 transitions. [2018-11-18 12:24:55,150 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3142 transitions. Word has length 59 [2018-11-18 12:24:55,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:24:55,152 INFO L480 AbstractCegarLoop]: Abstraction has 2219 states and 3142 transitions. [2018-11-18 12:24:55,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:24:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3142 transitions. [2018-11-18 12:24:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 12:24:55,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:24:55,163 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:24:55,164 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:24:55,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:24:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash -702336077, now seen corresponding path program 1 times [2018-11-18 12:24:55,165 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:24:55,165 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:24:55,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:24:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:24:55,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:24:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 12:24:55,485 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:24:55,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:24:55,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:24:55,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:24:55,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:24:55,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:24:55,504 INFO L87 Difference]: Start difference. First operand 2219 states and 3142 transitions. Second operand 5 states. [2018-11-18 12:24:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:24:56,037 INFO L93 Difference]: Finished difference Result 4415 states and 6256 transitions. [2018-11-18 12:24:56,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:24:56,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2018-11-18 12:24:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:24:56,053 INFO L225 Difference]: With dead ends: 4415 [2018-11-18 12:24:56,053 INFO L226 Difference]: Without dead ends: 2218 [2018-11-18 12:24:56,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:24:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2018-11-18 12:24:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2218. [2018-11-18 12:24:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2018-11-18 12:24:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3138 transitions. [2018-11-18 12:24:56,187 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3138 transitions. Word has length 62 [2018-11-18 12:24:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:24:56,187 INFO L480 AbstractCegarLoop]: Abstraction has 2218 states and 3138 transitions. [2018-11-18 12:24:56,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:24:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3138 transitions. [2018-11-18 12:24:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-18 12:24:56,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:24:56,195 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2018-11-18 12:24:56,195 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:24:56,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:24:56,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1928268400, now seen corresponding path program 1 times [2018-11-18 12:24:56,196 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:24:56,196 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:24:56,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:24:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:24:56,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:24:56,675 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-11-18 12:24:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 12:24:56,706 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:24:56,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:24:56,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 12:24:56,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 12:24:56,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 12:24:56,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:24:56,723 INFO L87 Difference]: Start difference. First operand 2218 states and 3138 transitions. Second operand 6 states. [2018-11-18 12:25:00,850 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-18 12:25:01,082 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-18 12:25:02,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:02,479 INFO L93 Difference]: Finished difference Result 6607 states and 9434 transitions. [2018-11-18 12:25:02,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:25:02,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2018-11-18 12:25:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:02,504 INFO L225 Difference]: With dead ends: 6607 [2018-11-18 12:25:02,504 INFO L226 Difference]: Without dead ends: 4398 [2018-11-18 12:25:02,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:25:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2018-11-18 12:25:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4388. [2018-11-18 12:25:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4388 states. [2018-11-18 12:25:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6266 transitions. [2018-11-18 12:25:02,718 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6266 transitions. Word has length 94 [2018-11-18 12:25:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:02,718 INFO L480 AbstractCegarLoop]: Abstraction has 4388 states and 6266 transitions. [2018-11-18 12:25:02,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 12:25:02,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6266 transitions. [2018-11-18 12:25:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-18 12:25:02,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:02,736 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:02,736 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:02,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash -256032799, now seen corresponding path program 1 times [2018-11-18 12:25:02,739 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:02,739 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:02,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:03,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 12:25:03,089 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:03,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:03,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:03,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:03,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:03,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:03,093 INFO L87 Difference]: Start difference. First operand 4388 states and 6266 transitions. Second operand 3 states. [2018-11-18 12:25:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:03,478 INFO L93 Difference]: Finished difference Result 8513 states and 12066 transitions. [2018-11-18 12:25:03,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:03,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-11-18 12:25:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:03,495 INFO L225 Difference]: With dead ends: 8513 [2018-11-18 12:25:03,496 INFO L226 Difference]: Without dead ends: 4147 [2018-11-18 12:25:03,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2018-11-18 12:25:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 4119. [2018-11-18 12:25:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4119 states. [2018-11-18 12:25:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4119 states to 4119 states and 5795 transitions. [2018-11-18 12:25:03,678 INFO L78 Accepts]: Start accepts. Automaton has 4119 states and 5795 transitions. Word has length 204 [2018-11-18 12:25:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:03,678 INFO L480 AbstractCegarLoop]: Abstraction has 4119 states and 5795 transitions. [2018-11-18 12:25:03,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4119 states and 5795 transitions. [2018-11-18 12:25:03,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-18 12:25:03,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:03,688 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:03,688 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:03,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:03,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1978939233, now seen corresponding path program 2 times [2018-11-18 12:25:03,691 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:03,691 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:03,719 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 12:25:11,008 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:25:11,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:25:11,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-18 12:25:11,068 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:11,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:11,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:11,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:11,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:11,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:11,077 INFO L87 Difference]: Start difference. First operand 4119 states and 5795 transitions. Second operand 3 states. [2018-11-18 12:25:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:13,475 INFO L93 Difference]: Finished difference Result 9204 states and 13025 transitions. [2018-11-18 12:25:13,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:13,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-11-18 12:25:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:13,498 INFO L225 Difference]: With dead ends: 9204 [2018-11-18 12:25:13,498 INFO L226 Difference]: Without dead ends: 6050 [2018-11-18 12:25:13,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2018-11-18 12:25:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6022. [2018-11-18 12:25:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6022 states. [2018-11-18 12:25:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8495 transitions. [2018-11-18 12:25:13,753 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8495 transitions. Word has length 204 [2018-11-18 12:25:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:13,754 INFO L480 AbstractCegarLoop]: Abstraction has 6022 states and 8495 transitions. [2018-11-18 12:25:13,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8495 transitions. [2018-11-18 12:25:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-18 12:25:13,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:13,767 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:13,767 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:13,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash 63157986, now seen corresponding path program 1 times [2018-11-18 12:25:13,768 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:13,768 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:13,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:25:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:14,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-18 12:25:14,251 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:14,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:14,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:25:14,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:25:14,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:25:14,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:25:14,255 INFO L87 Difference]: Start difference. First operand 6022 states and 8495 transitions. Second operand 4 states. [2018-11-18 12:25:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:14,450 INFO L93 Difference]: Finished difference Result 11095 states and 15693 transitions. [2018-11-18 12:25:14,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:25:14,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2018-11-18 12:25:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:14,476 INFO L225 Difference]: With dead ends: 11095 [2018-11-18 12:25:14,476 INFO L226 Difference]: Without dead ends: 6022 [2018-11-18 12:25:14,489 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:25:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6022 states. [2018-11-18 12:25:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6022 to 6022. [2018-11-18 12:25:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6022 states. [2018-11-18 12:25:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8487 transitions. [2018-11-18 12:25:14,741 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8487 transitions. Word has length 204 [2018-11-18 12:25:14,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:14,741 INFO L480 AbstractCegarLoop]: Abstraction has 6022 states and 8487 transitions. [2018-11-18 12:25:14,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:25:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8487 transitions. [2018-11-18 12:25:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-18 12:25:14,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:14,754 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:14,754 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:14,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash -638495525, now seen corresponding path program 1 times [2018-11-18 12:25:14,755 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:14,756 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:14,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:15,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-18 12:25:15,074 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:15,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:15,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:15,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:15,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:15,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:15,077 INFO L87 Difference]: Start difference. First operand 6022 states and 8487 transitions. Second operand 3 states. [2018-11-18 12:25:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:15,172 INFO L93 Difference]: Finished difference Result 9056 states and 12835 transitions. [2018-11-18 12:25:15,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:15,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-11-18 12:25:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:15,190 INFO L225 Difference]: With dead ends: 9056 [2018-11-18 12:25:15,190 INFO L226 Difference]: Without dead ends: 6038 [2018-11-18 12:25:15,198 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2018-11-18 12:25:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 6038. [2018-11-18 12:25:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6038 states. [2018-11-18 12:25:15,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6038 states to 6038 states and 8503 transitions. [2018-11-18 12:25:15,389 INFO L78 Accepts]: Start accepts. Automaton has 6038 states and 8503 transitions. Word has length 204 [2018-11-18 12:25:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:15,390 INFO L480 AbstractCegarLoop]: Abstraction has 6038 states and 8503 transitions. [2018-11-18 12:25:15,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 6038 states and 8503 transitions. [2018-11-18 12:25:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-18 12:25:15,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:15,401 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:15,401 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:15,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:15,401 INFO L82 PathProgramCache]: Analyzing trace with hash -131896198, now seen corresponding path program 1 times [2018-11-18 12:25:15,404 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:15,404 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:15,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:16,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-18 12:25:16,212 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:16,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:16,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:25:16,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:25:16,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:25:16,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:25:16,217 INFO L87 Difference]: Start difference. First operand 6038 states and 8503 transitions. Second operand 5 states. [2018-11-18 12:25:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:16,440 INFO L93 Difference]: Finished difference Result 11139 states and 15735 transitions. [2018-11-18 12:25:16,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:25:16,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2018-11-18 12:25:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:16,461 INFO L225 Difference]: With dead ends: 11139 [2018-11-18 12:25:16,461 INFO L226 Difference]: Without dead ends: 6070 [2018-11-18 12:25:16,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:25:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2018-11-18 12:25:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 6062. [2018-11-18 12:25:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6062 states. [2018-11-18 12:25:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8536 transitions. [2018-11-18 12:25:16,702 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8536 transitions. Word has length 206 [2018-11-18 12:25:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:16,702 INFO L480 AbstractCegarLoop]: Abstraction has 6062 states and 8536 transitions. [2018-11-18 12:25:16,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:25:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8536 transitions. [2018-11-18 12:25:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-18 12:25:16,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:16,715 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:16,715 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:16,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash -426423780, now seen corresponding path program 1 times [2018-11-18 12:25:16,718 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:16,719 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:16,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:17,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-18 12:25:17,753 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:17,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:17,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 12:25:17,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 12:25:17,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 12:25:17,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:25:17,759 INFO L87 Difference]: Start difference. First operand 6062 states and 8536 transitions. Second operand 6 states. [2018-11-18 12:25:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:47,757 INFO L93 Difference]: Finished difference Result 13828 states and 19590 transitions. [2018-11-18 12:25:47,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 12:25:47,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-11-18 12:25:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:47,782 INFO L225 Difference]: With dead ends: 13828 [2018-11-18 12:25:47,782 INFO L226 Difference]: Without dead ends: 7788 [2018-11-18 12:25:47,794 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:25:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2018-11-18 12:25:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7322. [2018-11-18 12:25:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-18 12:25:48,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 10266 transitions. [2018-11-18 12:25:48,076 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 10266 transitions. Word has length 208 [2018-11-18 12:25:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:48,076 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 10266 transitions. [2018-11-18 12:25:48,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 12:25:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 10266 transitions. [2018-11-18 12:25:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-18 12:25:48,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:48,090 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:48,090 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:48,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:48,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1242793426, now seen corresponding path program 1 times [2018-11-18 12:25:48,091 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:48,091 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:48,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:48,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-11-18 12:25:48,550 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:48,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:48,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:48,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:48,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:48,554 INFO L87 Difference]: Start difference. First operand 7322 states and 10266 transitions. Second operand 3 states. [2018-11-18 12:25:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:48,759 INFO L93 Difference]: Finished difference Result 13800 states and 19507 transitions. [2018-11-18 12:25:48,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:48,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-11-18 12:25:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:48,783 INFO L225 Difference]: With dead ends: 13800 [2018-11-18 12:25:48,783 INFO L226 Difference]: Without dead ends: 7734 [2018-11-18 12:25:48,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2018-11-18 12:25:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7562. [2018-11-18 12:25:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7562 states. [2018-11-18 12:25:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7562 states to 7562 states and 10670 transitions. [2018-11-18 12:25:49,058 INFO L78 Accepts]: Start accepts. Automaton has 7562 states and 10670 transitions. Word has length 289 [2018-11-18 12:25:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:49,058 INFO L480 AbstractCegarLoop]: Abstraction has 7562 states and 10670 transitions. [2018-11-18 12:25:49,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 7562 states and 10670 transitions. [2018-11-18 12:25:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-18 12:25:49,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:49,071 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:49,071 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:49,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:49,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1628655828, now seen corresponding path program 1 times [2018-11-18 12:25:49,072 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:49,072 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:49,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:49,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-11-18 12:25:49,422 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:49,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:49,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:49,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:49,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:49,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:49,425 INFO L87 Difference]: Start difference. First operand 7562 states and 10670 transitions. Second operand 3 states. [2018-11-18 12:25:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:49,625 INFO L93 Difference]: Finished difference Result 14272 states and 20295 transitions. [2018-11-18 12:25:49,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:49,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-11-18 12:25:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:49,643 INFO L225 Difference]: With dead ends: 14272 [2018-11-18 12:25:49,644 INFO L226 Difference]: Without dead ends: 7966 [2018-11-18 12:25:49,655 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:49,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7966 states. [2018-11-18 12:25:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7966 to 7794. [2018-11-18 12:25:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7794 states. [2018-11-18 12:25:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 11046 transitions. [2018-11-18 12:25:49,935 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 11046 transitions. Word has length 289 [2018-11-18 12:25:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:49,935 INFO L480 AbstractCegarLoop]: Abstraction has 7794 states and 11046 transitions. [2018-11-18 12:25:49,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 11046 transitions. [2018-11-18 12:25:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-18 12:25:49,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:49,944 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:49,944 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:49,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1219730602, now seen corresponding path program 1 times [2018-11-18 12:25:49,945 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:49,945 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:49,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:50,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-11-18 12:25:50,309 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:50,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:50,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:50,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:50,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:50,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:50,314 INFO L87 Difference]: Start difference. First operand 7794 states and 11046 transitions. Second operand 3 states. [2018-11-18 12:25:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:50,570 INFO L93 Difference]: Finished difference Result 14620 states and 20875 transitions. [2018-11-18 12:25:50,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:50,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-11-18 12:25:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:50,593 INFO L225 Difference]: With dead ends: 14620 [2018-11-18 12:25:50,593 INFO L226 Difference]: Without dead ends: 8082 [2018-11-18 12:25:50,609 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2018-11-18 12:25:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 8074. [2018-11-18 12:25:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8074 states. [2018-11-18 12:25:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 11498 transitions. [2018-11-18 12:25:50,891 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 11498 transitions. Word has length 289 [2018-11-18 12:25:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:50,892 INFO L480 AbstractCegarLoop]: Abstraction has 8074 states and 11498 transitions. [2018-11-18 12:25:50,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 11498 transitions. [2018-11-18 12:25:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-18 12:25:50,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:50,901 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:50,901 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:50,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:50,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1638154943, now seen corresponding path program 1 times [2018-11-18 12:25:50,902 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:50,902 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:50,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:51,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-11-18 12:25:51,321 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:51,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:51,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:25:51,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:25:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:25:51,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:51,325 INFO L87 Difference]: Start difference. First operand 8074 states and 11498 transitions. Second operand 3 states. [2018-11-18 12:25:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:51,593 INFO L93 Difference]: Finished difference Result 17118 states and 24652 transitions. [2018-11-18 12:25:51,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:25:51,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-11-18 12:25:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:51,617 INFO L225 Difference]: With dead ends: 17118 [2018-11-18 12:25:51,617 INFO L226 Difference]: Without dead ends: 9066 [2018-11-18 12:25:51,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:25:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2018-11-18 12:25:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 8986. [2018-11-18 12:25:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8986 states. [2018-11-18 12:25:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8986 states to 8986 states and 12858 transitions. [2018-11-18 12:25:51,956 INFO L78 Accepts]: Start accepts. Automaton has 8986 states and 12858 transitions. Word has length 258 [2018-11-18 12:25:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:51,957 INFO L480 AbstractCegarLoop]: Abstraction has 8986 states and 12858 transitions. [2018-11-18 12:25:51,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:25:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8986 states and 12858 transitions. [2018-11-18 12:25:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-18 12:25:51,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:51,968 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:51,968 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:51,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:51,969 INFO L82 PathProgramCache]: Analyzing trace with hash -268248323, now seen corresponding path program 1 times [2018-11-18 12:25:51,969 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:51,969 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:51,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:53,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-18 12:25:53,233 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:53,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:53,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 12:25:53,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:25:53,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:25:53,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:25:53,239 INFO L87 Difference]: Start difference. First operand 8986 states and 12858 transitions. Second operand 5 states. [2018-11-18 12:25:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:53,479 INFO L93 Difference]: Finished difference Result 17998 states and 25922 transitions. [2018-11-18 12:25:53,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:25:53,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2018-11-18 12:25:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:53,497 INFO L225 Difference]: With dead ends: 17998 [2018-11-18 12:25:53,497 INFO L226 Difference]: Without dead ends: 9034 [2018-11-18 12:25:53,511 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:25:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2018-11-18 12:25:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 9018. [2018-11-18 12:25:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9018 states. [2018-11-18 12:25:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 12898 transitions. [2018-11-18 12:25:53,751 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 12898 transitions. Word has length 258 [2018-11-18 12:25:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:53,752 INFO L480 AbstractCegarLoop]: Abstraction has 9018 states and 12898 transitions. [2018-11-18 12:25:53,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:25:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 12898 transitions. [2018-11-18 12:25:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-18 12:25:53,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:53,759 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:53,760 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:53,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:53,760 INFO L82 PathProgramCache]: Analyzing trace with hash 606939942, now seen corresponding path program 1 times [2018-11-18 12:25:53,761 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:53,761 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:53,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:54,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-18 12:25:55,001 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:55,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:55,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 12:25:55,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 12:25:55,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 12:25:55,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:25:55,007 INFO L87 Difference]: Start difference. First operand 9018 states and 12898 transitions. Second operand 11 states. [2018-11-18 12:25:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:55,401 INFO L93 Difference]: Finished difference Result 18086 states and 25994 transitions. [2018-11-18 12:25:55,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 12:25:55,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2018-11-18 12:25:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:55,421 INFO L225 Difference]: With dead ends: 18086 [2018-11-18 12:25:55,421 INFO L226 Difference]: Without dead ends: 9090 [2018-11-18 12:25:55,435 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:25:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2018-11-18 12:25:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 9090. [2018-11-18 12:25:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9090 states. [2018-11-18 12:25:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 12954 transitions. [2018-11-18 12:25:55,681 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 12954 transitions. Word has length 263 [2018-11-18 12:25:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:55,681 INFO L480 AbstractCegarLoop]: Abstraction has 9090 states and 12954 transitions. [2018-11-18 12:25:55,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 12:25:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 12954 transitions. [2018-11-18 12:25:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-18 12:25:55,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:55,695 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:55,695 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:55,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:55,696 INFO L82 PathProgramCache]: Analyzing trace with hash 204110872, now seen corresponding path program 1 times [2018-11-18 12:25:55,697 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:55,697 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:55,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:56,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:25:56,878 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:25:56,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:25:56,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 12:25:56,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 12:25:56,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 12:25:56,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:25:56,884 INFO L87 Difference]: Start difference. First operand 9090 states and 12954 transitions. Second operand 6 states. [2018-11-18 12:25:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:25:57,252 INFO L93 Difference]: Finished difference Result 19146 states and 27476 transitions. [2018-11-18 12:25:57,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:25:57,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 366 [2018-11-18 12:25:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:25:57,283 INFO L225 Difference]: With dead ends: 19146 [2018-11-18 12:25:57,284 INFO L226 Difference]: Without dead ends: 10078 [2018-11-18 12:25:57,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:25:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10078 states. [2018-11-18 12:25:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10078 to 9198. [2018-11-18 12:25:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9198 states. [2018-11-18 12:25:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9198 states to 9198 states and 13146 transitions. [2018-11-18 12:25:57,814 INFO L78 Accepts]: Start accepts. Automaton has 9198 states and 13146 transitions. Word has length 366 [2018-11-18 12:25:57,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:25:57,815 INFO L480 AbstractCegarLoop]: Abstraction has 9198 states and 13146 transitions. [2018-11-18 12:25:57,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 12:25:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 9198 states and 13146 transitions. [2018-11-18 12:25:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-18 12:25:57,832 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:25:57,833 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:25:57,833 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:25:57,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:25:57,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1049222338, now seen corresponding path program 1 times [2018-11-18 12:25:57,837 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:25:57,837 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:25:57,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:25:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:25:59,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:25:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 125 proven. 1 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:25:59,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:25:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-11-18 12:25:59,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:25:59,702 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:25:59,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:26:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:26:00,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:26:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 125 proven. 1 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:26:00,147 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:26:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-11-18 12:26:00,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 12:26:00,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-18 12:26:00,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 12:26:00,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 12:26:00,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:26:00,507 INFO L87 Difference]: Start difference. First operand 9198 states and 13146 transitions. Second operand 11 states. [2018-11-18 12:26:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:26:01,088 INFO L93 Difference]: Finished difference Result 20882 states and 30234 transitions. [2018-11-18 12:26:01,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 12:26:01,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 367 [2018-11-18 12:26:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:26:01,113 INFO L225 Difference]: With dead ends: 20882 [2018-11-18 12:26:01,114 INFO L226 Difference]: Without dead ends: 11706 [2018-11-18 12:26:01,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1457 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:26:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2018-11-18 12:26:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 9282. [2018-11-18 12:26:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9282 states. [2018-11-18 12:26:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 13294 transitions. [2018-11-18 12:26:01,476 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 13294 transitions. Word has length 367 [2018-11-18 12:26:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:26:01,477 INFO L480 AbstractCegarLoop]: Abstraction has 9282 states and 13294 transitions. [2018-11-18 12:26:01,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 12:26:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 13294 transitions. [2018-11-18 12:26:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-18 12:26:01,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:26:01,488 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:26:01,488 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:26:01,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:26:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1247846184, now seen corresponding path program 2 times [2018-11-18 12:26:01,489 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:26:01,490 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:26:01,512 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 12:26:21,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:26:21,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:26:21,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:26:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 125 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:26:21,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:26:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-11-18 12:26:22,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:26:22,311 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:26:22,327 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:26:34,682 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:26:34,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:26:34,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:26:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 125 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:26:34,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:26:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-11-18 12:26:35,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 12:26:35,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 13 [2018-11-18 12:26:35,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 12:26:35,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 12:26:35,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:26:35,230 INFO L87 Difference]: Start difference. First operand 9282 states and 13294 transitions. Second operand 13 states. [2018-11-18 12:26:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:26:36,083 INFO L93 Difference]: Finished difference Result 21002 states and 30434 transitions. [2018-11-18 12:26:36,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:26:36,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 368 [2018-11-18 12:26:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:26:36,102 INFO L225 Difference]: With dead ends: 21002 [2018-11-18 12:26:36,103 INFO L226 Difference]: Without dead ends: 11742 [2018-11-18 12:26:36,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1458 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-18 12:26:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11742 states. [2018-11-18 12:26:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11742 to 9294. [2018-11-18 12:26:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9294 states. [2018-11-18 12:26:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 13318 transitions. [2018-11-18 12:26:36,413 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 13318 transitions. Word has length 368 [2018-11-18 12:26:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:26:36,414 INFO L480 AbstractCegarLoop]: Abstraction has 9294 states and 13318 transitions. [2018-11-18 12:26:36,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 12:26:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 13318 transitions. [2018-11-18 12:26:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-11-18 12:26:36,422 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:26:36,422 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:26:36,422 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:26:36,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:26:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1184749182, now seen corresponding path program 3 times [2018-11-18 12:26:36,424 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:26:36,424 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:26:36,455 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 12:27:18,167 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 12:27:18,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:27:18,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:27:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 125 proven. 6 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:27:18,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:27:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-11-18 12:27:19,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:27:19,418 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:27:19,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:27:43,709 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 12:27:43,710 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:27:43,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:27:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 125 proven. 6 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 12:27:43,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:27:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-11-18 12:27:44,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 12:27:44,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 25 [2018-11-18 12:27:44,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-18 12:27:44,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-18 12:27:44,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2018-11-18 12:27:44,709 INFO L87 Difference]: Start difference. First operand 9294 states and 13318 transitions. Second operand 25 states. [2018-11-18 12:27:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:27:46,251 INFO L93 Difference]: Finished difference Result 21050 states and 30526 transitions. [2018-11-18 12:27:46,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 12:27:46,251 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 369 [2018-11-18 12:27:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:27:46,276 INFO L225 Difference]: With dead ends: 21050 [2018-11-18 12:27:46,276 INFO L226 Difference]: Without dead ends: 11778 [2018-11-18 12:27:46,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1449 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2018-11-18 12:27:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11778 states. [2018-11-18 12:27:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11778 to 9306. [2018-11-18 12:27:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9306 states. [2018-11-18 12:27:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 13342 transitions. [2018-11-18 12:27:46,636 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 13342 transitions. Word has length 369 [2018-11-18 12:27:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:27:46,636 INFO L480 AbstractCegarLoop]: Abstraction has 9306 states and 13342 transitions. [2018-11-18 12:27:46,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-18 12:27:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 13342 transitions. [2018-11-18 12:27:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-11-18 12:27:46,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:27:46,644 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:27:46,644 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:27:46,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:27:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -714205800, now seen corresponding path program 4 times [2018-11-18 12:27:46,646 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:27:46,646 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_86f35266-bd01-48d2-ae9e-263643d67d41/bin-2019/utaipan/cvc4nyu Starting monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:27:46,666 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:27:46,958 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:27:46,959 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:358) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.partitionStmtsAccordingToConstantSize(AnnotateAndAsserterWithStmtOrderPrioritization.java:377) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.annotateAndAssertStmtsAccording5Heuristic(AnnotateAndAsserterWithStmtOrderPrioritization.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserterWithStmtOrderPrioritization.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-18 12:27:46,962 INFO L168 Benchmark]: Toolchain (without parser) took 195102.16 ms. Allocated memory was 1.0 GB in the beginning and 4.0 GB in the end (delta: 3.0 GB). Free memory was 941.2 MB in the beginning and 1.6 GB in the end (delta: -663.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 11.5 GB. [2018-11-18 12:27:46,962 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:27:46,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4604.62 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.2 GB). Free memory was 941.2 MB in the beginning and 1.6 GB in the end (delta: -680.7 MB). Peak memory consumption was 842.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:27:46,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.15 ms. Allocated memory is still 2.2 GB. Free memory is still 1.6 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:27:46,963 INFO L168 Benchmark]: Boogie Preprocessor took 265.24 ms. Allocated memory is still 2.2 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:27:46,964 INFO L168 Benchmark]: RCFGBuilder took 14909.29 ms. Allocated memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: 33.0 MB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -531.8 MB). Peak memory consumption was 928.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:27:46,964 INFO L168 Benchmark]: TraceAbstraction took 175238.61 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 519.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 11.5 GB. [2018-11-18 12:27:46,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 4604.62 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.2 GB). Free memory was 941.2 MB in the beginning and 1.6 GB in the end (delta: -680.7 MB). Peak memory consumption was 842.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 80.15 ms. Allocated memory is still 2.2 GB. Free memory is still 1.6 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 265.24 ms. Allocated memory is still 2.2 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 14909.29 ms. Allocated memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: 33.0 MB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -531.8 MB). Peak memory consumption was 928.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 175238.61 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 519.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible!: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:358) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...