./Ultimate.py --spec ../../sv-benchmarks/c/Systems_DeviceDriversLinux64_ReachSafety.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_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_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 b1825b0ee265e3f2a53797e349f17965be348837 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 b1825b0ee265e3f2a53797e349f17965be348837 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:01:29,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:01:29,704 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:01:29,710 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:01:29,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:01:29,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:01:29,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:01:29,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:01:29,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:01:29,714 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:01:29,715 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:01:29,715 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:01:29,716 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:01:29,716 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:01:29,717 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:01:29,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:01:29,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:01:29,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:01:29,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:01:29,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:01:29,721 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:01:29,722 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:01:29,723 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:01:29,723 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:01:29,723 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:01:29,723 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:01:29,724 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:01:29,724 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:01:29,724 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:01:29,725 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:01:29,725 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:01:29,725 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:01:29,725 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:01:29,726 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:01:29,726 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:01:29,726 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:01:29,727 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-18 13:01:29,737 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:01:29,737 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:01:29,737 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:01:29,737 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:01:29,737 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:01:29,737 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:01:29,738 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:01:29,739 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:01:29,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:01:29,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:01:29,740 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:01:29,740 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:01:29,740 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:01:29,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:01:29,740 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:01:29,740 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:01:29,741 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:01:29,741 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:01:29,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:01:29,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:01:29,741 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:01:29,741 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-18 13:01:29,741 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_6a99fc54-2797-406c-9fad-878d28171ad6/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 -> b1825b0ee265e3f2a53797e349f17965be348837 [2018-11-18 13:01:29,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:01:29,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:01:29,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:01:29,778 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:01:29,778 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:01:29,778 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c [2018-11-18 13:01:29,822 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/aa25d05f5/f4f6a85dacd54cdab6b0d3eac44b1a3c/FLAGeb3369274 [2018-11-18 13:01:30,360 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:01:30,361 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c [2018-11-18 13:01:30,376 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/aa25d05f5/f4f6a85dacd54cdab6b0d3eac44b1a3c/FLAGeb3369274 [2018-11-18 13:01:30,799 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/aa25d05f5/f4f6a85dacd54cdab6b0d3eac44b1a3c [2018-11-18 13:01:30,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:01:30,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:01:30,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:01:30,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:01:30,806 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:01:30,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:01:30" (1/1) ... [2018-11-18 13:01:30,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452921f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:30, skipping insertion in model container [2018-11-18 13:01:30,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:01:30" (1/1) ... [2018-11-18 13:01:30,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:01:30,870 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:01:31,722 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:01:31,742 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:01:32,036 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:01:32,110 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:01:32,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32 WrapperNode [2018-11-18 13:01:32,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:01:32,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:01:32,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:01:32,112 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:01:32,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:01:32,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:01:32,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:01:32,153 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:01:32,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... [2018-11-18 13:01:32,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:01:32,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:01:32,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:01:32,232 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:01:32,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2018-11-18 13:01:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2018-11-18 13:01:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2018-11-18 13:01:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2018-11-18 13:01:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2018-11-18 13:01:32,276 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2018-11-18 13:01:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2018-11-18 13:01:32,276 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2018-11-18 13:01:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2018-11-18 13:01:32,276 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2018-11-18 13:01:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:01:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2018-11-18 13:01:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2018-11-18 13:01:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 13:01:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:01:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 13:01:32,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 13:01:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2018-11-18 13:01:32,279 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2018-11-18 13:01:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2018-11-18 13:01:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-11-18 13:01:32,279 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-11-18 13:01:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2018-11-18 13:01:32,279 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2018-11-18 13:01:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2018-11-18 13:01:32,279 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2018-11-18 13:01:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2018-11-18 13:01:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2018-11-18 13:01:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-18 13:01:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-18 13:01:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2018-11-18 13:01:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2018-11-18 13:01:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2018-11-18 13:01:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2018-11-18 13:01:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2018-11-18 13:01:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2018-11-18 13:01:32,281 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:01:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2018-11-18 13:01:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2018-11-18 13:01:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 13:01:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 13:01:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2018-11-18 13:01:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2018-11-18 13:01:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 13:01:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 13:01:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2018-11-18 13:01:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2018-11-18 13:01:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2018-11-18 13:01:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 13:01:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 13:01:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2018-11-18 13:01:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2018-11-18 13:01:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2018-11-18 13:01:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2018-11-18 13:01:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:01:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:01:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2018-11-18 13:01:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2018-11-18 13:01:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2018-11-18 13:01:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2018-11-18 13:01:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2018-11-18 13:01:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2018-11-18 13:01:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2018-11-18 13:01:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2018-11-18 13:01:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2018-11-18 13:01:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2018-11-18 13:01:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2018-11-18 13:01:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2018-11-18 13:01:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2018-11-18 13:01:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2018-11-18 13:01:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-18 13:01:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:01:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-18 13:01:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2018-11-18 13:01:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2018-11-18 13:01:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2018-11-18 13:01:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2018-11-18 13:01:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-11-18 13:01:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-11-18 13:01:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2018-11-18 13:01:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2018-11-18 13:01:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2018-11-18 13:01:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2018-11-18 13:01:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2018-11-18 13:01:32,291 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2018-11-18 13:01:32,292 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2018-11-18 13:01:32,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2018-11-18 13:01:32,292 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2018-11-18 13:01:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2018-11-18 13:01:32,292 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2018-11-18 13:01:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2018-11-18 13:01:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2018-11-18 13:01:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2018-11-18 13:01:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2018-11-18 13:01:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2018-11-18 13:01:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2018-11-18 13:01:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2018-11-18 13:01:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2018-11-18 13:01:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-18 13:01:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2018-11-18 13:01:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2018-11-18 13:01:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2018-11-18 13:01:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2018-11-18 13:01:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 13:01:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2018-11-18 13:01:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2018-11-18 13:01:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2018-11-18 13:01:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:01:32,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:01:32,297 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2018-11-18 13:01:32,297 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2018-11-18 13:01:35,341 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:01:35,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:01:35 BoogieIcfgContainer [2018-11-18 13:01:35,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:01:35,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:01:35,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:01:35,344 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:01:35,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:01:30" (1/3) ... [2018-11-18 13:01:35,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f538022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:01:35, skipping insertion in model container [2018-11-18 13:01:35,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:32" (2/3) ... [2018-11-18 13:01:35,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f538022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:01:35, skipping insertion in model container [2018-11-18 13:01:35,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:01:35" (3/3) ... [2018-11-18 13:01:35,347 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c [2018-11-18 13:01:35,353 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:01:35,359 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:01:35,369 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:01:35,393 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:01:35,394 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:01:35,394 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:01:35,394 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:01:35,394 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:01:35,394 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:01:35,394 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:01:35,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:01:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states. [2018-11-18 13:01:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 13:01:35,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:35,422 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 13:01:35,423 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:35,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:35,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1516702859, now seen corresponding path program 1 times [2018-11-18 13:01:35,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:35,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:35,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:35,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:35,468 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 13:01:35,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:35,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:01:35,702 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:35,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:01:35,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:01:35,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:01:35,715 INFO L87 Difference]: Start difference. First operand 498 states. Second operand 3 states. [2018-11-18 13:01:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:37,859 INFO L93 Difference]: Finished difference Result 1405 states and 1790 transitions. [2018-11-18 13:01:37,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:01:37,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-11-18 13:01:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:37,908 INFO L225 Difference]: With dead ends: 1405 [2018-11-18 13:01:37,909 INFO L226 Difference]: Without dead ends: 897 [2018-11-18 13:01:37,914 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 13:01:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2018-11-18 13:01:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 894. [2018-11-18 13:01:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2018-11-18 13:01:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1130 transitions. [2018-11-18 13:01:37,992 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1130 transitions. Word has length 53 [2018-11-18 13:01:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:37,993 INFO L480 AbstractCegarLoop]: Abstraction has 894 states and 1130 transitions. [2018-11-18 13:01:37,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:01:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1130 transitions. [2018-11-18 13:01:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 13:01:37,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:37,994 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 13:01:37,995 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:37,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:37,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1409194692, now seen corresponding path program 1 times [2018-11-18 13:01:37,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:37,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:37,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:37,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:37,998 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 13:01:38,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:38,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:01:38,091 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:38,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:01:38,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:01:38,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:01:38,093 INFO L87 Difference]: Start difference. First operand 894 states and 1130 transitions. Second operand 3 states. [2018-11-18 13:01:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:38,151 INFO L93 Difference]: Finished difference Result 1739 states and 2220 transitions. [2018-11-18 13:01:38,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:01:38,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-11-18 13:01:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:38,160 INFO L225 Difference]: With dead ends: 1739 [2018-11-18 13:01:38,160 INFO L226 Difference]: Without dead ends: 1728 [2018-11-18 13:01:38,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 13:01:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-11-18 13:01:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1728. [2018-11-18 13:01:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2018-11-18 13:01:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2205 transitions. [2018-11-18 13:01:38,215 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2205 transitions. Word has length 57 [2018-11-18 13:01:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:38,216 INFO L480 AbstractCegarLoop]: Abstraction has 1728 states and 2205 transitions. [2018-11-18 13:01:38,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:01:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2205 transitions. [2018-11-18 13:01:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-18 13:01:38,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:38,223 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:38,223 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:38,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash -686327183, now seen corresponding path program 1 times [2018-11-18 13:01:38,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:38,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:38,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:38,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:38,226 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 13:01:38,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:38,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:01:38,327 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:38,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:01:38,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:01:38,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:01:38,328 INFO L87 Difference]: Start difference. First operand 1728 states and 2205 transitions. Second operand 3 states. [2018-11-18 13:01:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:38,453 INFO L93 Difference]: Finished difference Result 4817 states and 6144 transitions. [2018-11-18 13:01:38,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:01:38,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2018-11-18 13:01:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:38,466 INFO L225 Difference]: With dead ends: 4817 [2018-11-18 13:01:38,466 INFO L226 Difference]: Without dead ends: 3110 [2018-11-18 13:01:38,472 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 13:01:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2018-11-18 13:01:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3100. [2018-11-18 13:01:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3100 states. [2018-11-18 13:01:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3950 transitions. [2018-11-18 13:01:38,583 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3950 transitions. Word has length 128 [2018-11-18 13:01:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:38,583 INFO L480 AbstractCegarLoop]: Abstraction has 3100 states and 3950 transitions. [2018-11-18 13:01:38,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:01:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3950 transitions. [2018-11-18 13:01:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-18 13:01:38,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:38,589 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:38,589 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:38,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1879440377, now seen corresponding path program 1 times [2018-11-18 13:01:38,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:38,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:38,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:38,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:38,592 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-18 13:01:38,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:38,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 13:01:38,708 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:38,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 13:01:38,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:01:38,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:01:38,709 INFO L87 Difference]: Start difference. First operand 3100 states and 3950 transitions. Second operand 5 states. [2018-11-18 13:01:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:40,809 INFO L93 Difference]: Finished difference Result 6196 states and 7899 transitions. [2018-11-18 13:01:40,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:01:40,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2018-11-18 13:01:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:40,818 INFO L225 Difference]: With dead ends: 6196 [2018-11-18 13:01:40,818 INFO L226 Difference]: Without dead ends: 3115 [2018-11-18 13:01:40,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:01:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2018-11-18 13:01:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3107. [2018-11-18 13:01:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2018-11-18 13:01:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3955 transitions. [2018-11-18 13:01:40,889 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3955 transitions. Word has length 168 [2018-11-18 13:01:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:40,889 INFO L480 AbstractCegarLoop]: Abstraction has 3107 states and 3955 transitions. [2018-11-18 13:01:40,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 13:01:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3955 transitions. [2018-11-18 13:01:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-18 13:01:40,941 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:40,942 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:40,942 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:40,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:40,942 INFO L82 PathProgramCache]: Analyzing trace with hash -24019718, now seen corresponding path program 1 times [2018-11-18 13:01:40,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:40,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:40,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:40,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:40,945 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-18 13:01:41,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:41,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:01:41,075 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:01:41,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:01:41,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:01:41,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:01:41,076 INFO L87 Difference]: Start difference. First operand 3107 states and 3955 transitions. Second operand 6 states. [2018-11-18 13:01:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:41,172 INFO L93 Difference]: Finished difference Result 6194 states and 7891 transitions. [2018-11-18 13:01:41,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:01:41,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-11-18 13:01:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:41,181 INFO L225 Difference]: With dead ends: 6194 [2018-11-18 13:01:41,181 INFO L226 Difference]: Without dead ends: 3115 [2018-11-18 13:01:41,186 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2018-11-18 13:01:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3115. [2018-11-18 13:01:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3115 states. [2018-11-18 13:01:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 3964 transitions. [2018-11-18 13:01:41,255 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 3964 transitions. Word has length 168 [2018-11-18 13:01:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:41,255 INFO L480 AbstractCegarLoop]: Abstraction has 3115 states and 3964 transitions. [2018-11-18 13:01:41,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:01:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 3964 transitions. [2018-11-18 13:01:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-18 13:01:41,259 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:41,259 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:41,259 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:41,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash 113063865, now seen corresponding path program 1 times [2018-11-18 13:01:41,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:01:41,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:41,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:41,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:01:41,262 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:01:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-18 13:01:41,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:41,398 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:01:41,399 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 170 with the following transitions: [2018-11-18 13:01:41,400 INFO L202 CegarAbsIntRunner]: [175], [176], [177], [179], [180], [181], [185], [186], [208], [213], [214], [217], [221], [223], [224], [225], [227], [228], [229], [230], [231], [233], [234], [257], [259], [261], [263], [265], [317], [320], [323], [326], [329], [331], [335], [338], [341], [343], [346], [348], [357], [376], [379], [382], [385], [388], [390], [436], [437], [440], [441], [486], [488], [489], [490], [493], [495], [508], [510], [524], [529], [530], [578], [580], [581], [582], [588], [591], [597], [600], [603], [607], [608], [621], [623], [624], [625], [627], [633], [635], [637], [643], [644], [647], [893], [895], [896], [933], [934], [937], [938], [939], [940], [947], [948], [949], [950], [951], [952], [959], [960], [961], [962], [963], [964], [965], [966], [969], [970], [977], [997], [998], [999], [1000], [1013], [1014], [1017], [1018], [1021], [1022], [1027], [1028], [1029], [1030], [1033], [1034], [1035], [1036], [1039], [1091], [1092], [1093], [1095], [1096] [2018-11-18 13:01:41,430 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:01:41,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:01:41,511 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:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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 13:01:41,514 INFO L168 Benchmark]: Toolchain (without parser) took 10712.95 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 291.0 MB). Free memory was 952.8 MB in the beginning and 1.0 GB in the end (delta: -54.8 MB). Peak memory consumption was 236.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:01:41,517 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:01:41,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1308.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 238.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:01:41,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:01:41,519 INFO L168 Benchmark]: Boogie Preprocessor took 79.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:01:41,519 INFO L168 Benchmark]: RCFGBuilder took 3109.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.8 MB in the end (delta: 212.0 MB). Peak memory consumption was 212.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:01:41,519 INFO L168 Benchmark]: TraceAbstraction took 6171.85 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.7 MB). Free memory was 910.8 MB in the beginning and 1.0 GB in the end (delta: -96.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:01:41,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1308.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -180.5 MB). Peak memory consumption was 238.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3109.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.8 MB in the end (delta: 212.0 MB). Peak memory consumption was 212.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6171.85 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 80.7 MB). Free memory was 910.8 MB in the beginning and 1.0 GB in the end (delta: -96.8 MB). There was no memory consumed. 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 13:01:42,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:01:42,940 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:01:42,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:01:42,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:01:42,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:01:42,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:01:42,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:01:42,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:01:42,951 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:01:42,952 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:01:42,952 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:01:42,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:01:42,953 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:01:42,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:01:42,955 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:01:42,955 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:01:42,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:01:42,958 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:01:42,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:01:42,959 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:01:42,960 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:01:42,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:01:42,962 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:01:42,962 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:01:42,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:01:42,963 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:01:42,964 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:01:42,964 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:01:42,965 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:01:42,965 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:01:42,966 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:01:42,966 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:01:42,966 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:01:42,967 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:01:42,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:01:42,967 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2018-11-18 13:01:42,978 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:01:42,979 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:01:42,979 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:01:42,979 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:01:42,979 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:01:42,980 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:01:42,980 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:01:42,980 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:01:42,980 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:01:42,980 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:01:42,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:01:42,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:01:42,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:01:42,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:01:42,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:01:42,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:01:42,983 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:01:42,984 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:01:42,984 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_6a99fc54-2797-406c-9fad-878d28171ad6/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 -> b1825b0ee265e3f2a53797e349f17965be348837 [2018-11-18 13:01:43,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:01:43,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:01:43,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:01:43,026 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:01:43,026 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:01:43,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c [2018-11-18 13:01:43,068 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/4fd439117/2c54592cd69c40e4bb74824c18ad59e4/FLAG223d11468 [2018-11-18 13:01:43,586 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:01:43,587 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c [2018-11-18 13:01:43,605 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/4fd439117/2c54592cd69c40e4bb74824c18ad59e4/FLAG223d11468 [2018-11-18 13:01:44,093 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/data/4fd439117/2c54592cd69c40e4bb74824c18ad59e4 [2018-11-18 13:01:44,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:01:44,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:01:44,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:01:44,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:01:44,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:01:44,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:01:44" (1/1) ... [2018-11-18 13:01:44,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75bf4f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:44, skipping insertion in model container [2018-11-18 13:01:44,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:01:44" (1/1) ... [2018-11-18 13:01:44,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:01:44,161 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:01:45,104 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:01:45,211 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:01:45,492 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:01:45,570 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:01:45,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45 WrapperNode [2018-11-18 13:01:45,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:01:45,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:01:45,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:01:45,572 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:01:45,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:01:45,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:01:45,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:01:45,618 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:01:45,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... [2018-11-18 13:01:45,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:01:45,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:01:45,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:01:45,713 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:01:45,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2018-11-18 13:01:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2018-11-18 13:01:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2018-11-18 13:01:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2018-11-18 13:01:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2018-11-18 13:01:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2018-11-18 13:01:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-18 13:01:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2018-11-18 13:01:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2018-11-18 13:01:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2018-11-18 13:01:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2018-11-18 13:01:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2018-11-18 13:01:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2018-11-18 13:01:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2018-11-18 13:01:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-18 13:01:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:01:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:01:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2018-11-18 13:01:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2018-11-18 13:01:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2018-11-18 13:01:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 13:01:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 13:01:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 13:01:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 13:01:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 13:01:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2018-11-18 13:01:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2018-11-18 13:01:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2018-11-18 13:01:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-11-18 13:01:45,760 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-11-18 13:01:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2018-11-18 13:01:45,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2018-11-18 13:01:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2018-11-18 13:01:45,760 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2018-11-18 13:01:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2018-11-18 13:01:45,761 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2018-11-18 13:01:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-18 13:01:45,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-18 13:01:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2018-11-18 13:01:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2018-11-18 13:01:45,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2018-11-18 13:01:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2018-11-18 13:01:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2018-11-18 13:01:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2018-11-18 13:01:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2018-11-18 13:01:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-18 13:01:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2018-11-18 13:01:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2018-11-18 13:01:45,762 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2018-11-18 13:01:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2018-11-18 13:01:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2018-11-18 13:01:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2018-11-18 13:01:45,763 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2018-11-18 13:01:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 13:01:45,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 13:01:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 13:01:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-18 13:01:45,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2018-11-18 13:01:45,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2018-11-18 13:01:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 13:01:45,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 13:01:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2018-11-18 13:01:45,764 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2018-11-18 13:01:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2018-11-18 13:01:45,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 13:01:45,764 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 13:01:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2018-11-18 13:01:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2018-11-18 13:01:45,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2018-11-18 13:01:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2018-11-18 13:01:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:01:45,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:01:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2018-11-18 13:01:45,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2018-11-18 13:01:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2018-11-18 13:01:45,766 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2018-11-18 13:01:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2018-11-18 13:01:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2018-11-18 13:01:45,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2018-11-18 13:01:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2018-11-18 13:01:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2018-11-18 13:01:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2018-11-18 13:01:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2018-11-18 13:01:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2018-11-18 13:01:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2018-11-18 13:01:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2018-11-18 13:01:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-18 13:01:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-18 13:01:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:01:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:01:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-18 13:01:45,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-18 13:01:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 13:01:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2018-11-18 13:01:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2018-11-18 13:01:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2018-11-18 13:01:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2018-11-18 13:01:45,769 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2018-11-18 13:01:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2018-11-18 13:01:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2018-11-18 13:01:45,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2018-11-18 13:01:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2018-11-18 13:01:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2018-11-18 13:01:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2018-11-18 13:01:45,769 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2018-11-18 13:01:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2018-11-18 13:01:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2018-11-18 13:01:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2018-11-18 13:01:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2018-11-18 13:01:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2018-11-18 13:01:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2018-11-18 13:01:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2018-11-18 13:01:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2018-11-18 13:01:45,771 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2018-11-18 13:01:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2018-11-18 13:01:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2018-11-18 13:01:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 13:01:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2018-11-18 13:01:45,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2018-11-18 13:01:45,771 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2018-11-18 13:01:45,771 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2018-11-18 13:01:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2018-11-18 13:01:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2018-11-18 13:01:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2018-11-18 13:01:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2018-11-18 13:01:45,772 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2018-11-18 13:01:45,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2018-11-18 13:01:45,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2018-11-18 13:01:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2018-11-18 13:01:45,775 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2018-11-18 13:01:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2018-11-18 13:01:45,775 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2018-11-18 13:01:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2018-11-18 13:01:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2018-11-18 13:01:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2018-11-18 13:01:45,776 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:01:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 13:01:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2018-11-18 13:01:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2018-11-18 13:01:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2018-11-18 13:01:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2018-11-18 13:01:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2018-11-18 13:01:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2018-11-18 13:01:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2018-11-18 13:01:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2018-11-18 13:01:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2018-11-18 13:01:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2018-11-18 13:01:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2018-11-18 13:01:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2018-11-18 13:01:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2018-11-18 13:01:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2018-11-18 13:01:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-18 13:01:45,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-18 13:01:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2018-11-18 13:01:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2018-11-18 13:01:45,781 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2018-11-18 13:01:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2018-11-18 13:01:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2018-11-18 13:01:45,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2018-11-18 13:01:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2018-11-18 13:01:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2018-11-18 13:01:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2018-11-18 13:01:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 13:01:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 13:01:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2018-11-18 13:01:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2018-11-18 13:01:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2018-11-18 13:01:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2018-11-18 13:01:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:01:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:01:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2018-11-18 13:01:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2018-11-18 13:01:49,202 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:01:49,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:01:49 BoogieIcfgContainer [2018-11-18 13:01:49,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:01:49,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:01:49,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:01:49,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:01:49,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:01:44" (1/3) ... [2018-11-18 13:01:49,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5287cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:01:49, skipping insertion in model container [2018-11-18 13:01:49,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:01:45" (2/3) ... [2018-11-18 13:01:49,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5287cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:01:49, skipping insertion in model container [2018-11-18 13:01:49,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:01:49" (3/3) ... [2018-11-18 13:01:49,207 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8_false-unreach-call.cil.out.c [2018-11-18 13:01:49,214 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:01:49,220 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:01:49,230 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:01:49,254 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:01:49,255 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:01:49,255 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:01:49,255 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:01:49,255 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:01:49,255 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:01:49,255 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:01:49,256 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:01:49,256 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:01:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states. [2018-11-18 13:01:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 13:01:49,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:49,281 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 13:01:49,283 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:49,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1516702859, now seen corresponding path program 1 times [2018-11-18 13:01:49,290 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:01:49,291 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:49,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:49,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 13:01:49,474 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:01:49,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:49,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:01:49,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:01:49,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:01:49,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:01:49,491 INFO L87 Difference]: Start difference. First operand 498 states. Second operand 3 states. [2018-11-18 13:01:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:49,651 INFO L93 Difference]: Finished difference Result 1422 states and 1817 transitions. [2018-11-18 13:01:49,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:01:49,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-11-18 13:01:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:49,668 INFO L225 Difference]: With dead ends: 1422 [2018-11-18 13:01:49,668 INFO L226 Difference]: Without dead ends: 908 [2018-11-18 13:01:49,673 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 13:01:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2018-11-18 13:01:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2018-11-18 13:01:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2018-11-18 13:01:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1153 transitions. [2018-11-18 13:01:49,752 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1153 transitions. Word has length 53 [2018-11-18 13:01:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:49,753 INFO L480 AbstractCegarLoop]: Abstraction has 908 states and 1153 transitions. [2018-11-18 13:01:49,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:01:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1153 transitions. [2018-11-18 13:01:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-18 13:01:49,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:49,759 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:49,759 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:49,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:49,759 INFO L82 PathProgramCache]: Analyzing trace with hash 68471480, now seen corresponding path program 1 times [2018-11-18 13:01:49,760 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:01:49,760 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:49,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:49,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 13:01:49,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:01:49,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:49,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:01:49,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:01:49,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:01:49,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:01:49,934 INFO L87 Difference]: Start difference. First operand 908 states and 1153 transitions. Second operand 3 states. [2018-11-18 13:01:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:50,013 INFO L93 Difference]: Finished difference Result 2503 states and 3182 transitions. [2018-11-18 13:01:50,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:01:50,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2018-11-18 13:01:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:50,020 INFO L225 Difference]: With dead ends: 2503 [2018-11-18 13:01:50,021 INFO L226 Difference]: Without dead ends: 1616 [2018-11-18 13:01:50,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 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 13:01:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2018-11-18 13:01:50,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1606. [2018-11-18 13:01:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2018-11-18 13:01:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2042 transitions. [2018-11-18 13:01:50,073 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2042 transitions. Word has length 124 [2018-11-18 13:01:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:50,073 INFO L480 AbstractCegarLoop]: Abstraction has 1606 states and 2042 transitions. [2018-11-18 13:01:50,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:01:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2042 transitions. [2018-11-18 13:01:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-18 13:01:50,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:50,079 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:50,079 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:50,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1124386053, now seen corresponding path program 1 times [2018-11-18 13:01:50,080 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:01:50,081 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:50,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:50,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 13:01:50,594 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:01:50,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:01:50,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:01:50,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:01:50,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:01:50,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:01:50,602 INFO L87 Difference]: Start difference. First operand 1606 states and 2042 transitions. Second operand 6 states. [2018-11-18 13:01:50,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:50,726 INFO L93 Difference]: Finished difference Result 3201 states and 4074 transitions. [2018-11-18 13:01:50,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:01:50,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-11-18 13:01:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:50,732 INFO L225 Difference]: With dead ends: 3201 [2018-11-18 13:01:50,732 INFO L226 Difference]: Without dead ends: 1607 [2018-11-18 13:01:50,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:01:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2018-11-18 13:01:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2018-11-18 13:01:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1607 states. [2018-11-18 13:01:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2043 transitions. [2018-11-18 13:01:50,774 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2043 transitions. Word has length 168 [2018-11-18 13:01:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:50,774 INFO L480 AbstractCegarLoop]: Abstraction has 1607 states and 2043 transitions. [2018-11-18 13:01:50,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:01:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2043 transitions. [2018-11-18 13:01:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-18 13:01:50,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:50,778 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:50,778 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:50,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:50,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1119833901, now seen corresponding path program 1 times [2018-11-18 13:01:50,779 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:01:50,779 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:50,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:51,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-18 13:01:51,289 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-18 13:01:51,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:51,673 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:51,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:51,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 13:01:51,890 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:01:51,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:01:51,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2018-11-18 13:01:51,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 13:01:51,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 13:01:51,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:01:51,919 INFO L87 Difference]: Start difference. First operand 1607 states and 2043 transitions. Second operand 14 states. [2018-11-18 13:01:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:54,295 INFO L93 Difference]: Finished difference Result 3233 states and 4112 transitions. [2018-11-18 13:01:54,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:01:54,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 170 [2018-11-18 13:01:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:54,302 INFO L225 Difference]: With dead ends: 3233 [2018-11-18 13:01:54,302 INFO L226 Difference]: Without dead ends: 1628 [2018-11-18 13:01:54,306 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-18 13:01:54,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2018-11-18 13:01:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1620. [2018-11-18 13:01:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2018-11-18 13:01:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2054 transitions. [2018-11-18 13:01:54,356 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2054 transitions. Word has length 170 [2018-11-18 13:01:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:54,356 INFO L480 AbstractCegarLoop]: Abstraction has 1620 states and 2054 transitions. [2018-11-18 13:01:54,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 13:01:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2054 transitions. [2018-11-18 13:01:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-18 13:01:54,359 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:54,359 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:54,360 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:54,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:54,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1263332164, now seen corresponding path program 1 times [2018-11-18 13:01:54,361 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:01:54,361 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:54,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:54,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-18 13:01:54,910 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-18 13:01:55,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:55,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:55,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:01:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:01:55,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-18 13:01:55,314 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-18 13:01:55,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 13:01:55,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 13 [2018-11-18 13:01:55,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 13:01:55,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 13:01:55,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-11-18 13:01:55,523 INFO L87 Difference]: Start difference. First operand 1620 states and 2054 transitions. Second operand 13 states. [2018-11-18 13:01:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:01:55,830 INFO L93 Difference]: Finished difference Result 3227 states and 4096 transitions. [2018-11-18 13:01:55,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:01:55,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 172 [2018-11-18 13:01:55,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:01:55,836 INFO L225 Difference]: With dead ends: 3227 [2018-11-18 13:01:55,836 INFO L226 Difference]: Without dead ends: 1621 [2018-11-18 13:01:55,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 673 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:01:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2018-11-18 13:01:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1621. [2018-11-18 13:01:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2018-11-18 13:01:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2055 transitions. [2018-11-18 13:01:55,888 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2055 transitions. Word has length 172 [2018-11-18 13:01:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:01:55,888 INFO L480 AbstractCegarLoop]: Abstraction has 1621 states and 2055 transitions. [2018-11-18 13:01:55,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 13:01:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2055 transitions. [2018-11-18 13:01:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-18 13:01:55,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:01:55,891 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:01:55,891 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:01:55,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:01:55,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1607091052, now seen corresponding path program 2 times [2018-11-18 13:01:55,892 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:01:55,893 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:01:55,915 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 13:01:56,778 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:01:56,778 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:01:56,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:01:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 13:01:57,010 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:01:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-11-18 13:01:57,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:01:57,286 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:01:57,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:02:09,424 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:02:09,424 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:02:09,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:02:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 13:02:09,503 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:02:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-11-18 13:02:09,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 13:02:09,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 23 [2018-11-18 13:02:09,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 13:02:09,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 13:02:09,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-11-18 13:02:09,879 INFO L87 Difference]: Start difference. First operand 1621 states and 2055 transitions. Second operand 23 states. [2018-11-18 13:02:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:02:10,360 INFO L93 Difference]: Finished difference Result 3229 states and 4098 transitions. [2018-11-18 13:02:10,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 13:02:10,361 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 174 [2018-11-18 13:02:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:02:10,367 INFO L225 Difference]: With dead ends: 3229 [2018-11-18 13:02:10,367 INFO L226 Difference]: Without dead ends: 1622 [2018-11-18 13:02:10,371 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 670 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2018-11-18 13:02:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2018-11-18 13:02:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1622. [2018-11-18 13:02:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1622 states. [2018-11-18 13:02:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2056 transitions. [2018-11-18 13:02:10,415 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2056 transitions. Word has length 174 [2018-11-18 13:02:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:02:10,416 INFO L480 AbstractCegarLoop]: Abstraction has 1622 states and 2056 transitions. [2018-11-18 13:02:10,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 13:02:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2056 transitions. [2018-11-18 13:02:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-18 13:02:10,419 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:02:10,419 INFO L375 BasicCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:02:10,419 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:02:10,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:02:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1375679108, now seen corresponding path program 3 times [2018-11-18 13:02:10,420 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:02:10,420 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:02:10,445 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 13:02:16,775 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:02:16,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:02:16,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:02:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 49 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-18 13:02:17,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:02:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-18 13:02:17,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:02:17,491 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:02:17,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:03:17,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:03:17,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:03:17,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:03:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 49 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-18 13:03:17,807 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:03:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-18 13:03:18,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 13:03:18,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 26 [2018-11-18 13:03:18,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 13:03:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 13:03:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2018-11-18 13:03:18,369 INFO L87 Difference]: Start difference. First operand 1622 states and 2056 transitions. Second operand 26 states. [2018-11-18 13:03:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:03:19,197 INFO L93 Difference]: Finished difference Result 3234 states and 4105 transitions. [2018-11-18 13:03:19,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 13:03:19,199 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 176 [2018-11-18 13:03:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:03:19,205 INFO L225 Difference]: With dead ends: 3234 [2018-11-18 13:03:19,205 INFO L226 Difference]: Without dead ends: 1631 [2018-11-18 13:03:19,209 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 675 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2018-11-18 13:03:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2018-11-18 13:03:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2018-11-18 13:03:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2018-11-18 13:03:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2065 transitions. [2018-11-18 13:03:19,255 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2065 transitions. Word has length 176 [2018-11-18 13:03:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:03:19,255 INFO L480 AbstractCegarLoop]: Abstraction has 1631 states and 2065 transitions. [2018-11-18 13:03:19,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 13:03:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2065 transitions. [2018-11-18 13:03:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-18 13:03:19,257 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:03:19,258 INFO L375 BasicCegarLoop]: trace histogram [9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-18 13:03:19,258 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:03:19,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:03:19,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1198779325, now seen corresponding path program 4 times [2018-11-18 13:03:19,259 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:03:19,259 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6a99fc54-2797-406c-9fad-878d28171ad6/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 13:03:19,278 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 13:03:19,521 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 13:03:19,522 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.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.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.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 13:03:19,524 INFO L168 Benchmark]: Toolchain (without parser) took 95428.43 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 490.2 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -217.9 MB). Peak memory consumption was 272.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:19,525 INFO L168 Benchmark]: CDTParser took 0.15 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 13:03:19,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1474.40 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 244.3 MB). Free memory was 943.3 MB in the beginning and 865.7 MB in the end (delta: 77.5 MB). Peak memory consumption was 342.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:19,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 1.3 GB. Free memory is still 865.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:03:19,526 INFO L168 Benchmark]: Boogie Preprocessor took 95.29 ms. Allocated memory is still 1.3 GB. Free memory was 865.7 MB in the beginning and 856.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:19,526 INFO L168 Benchmark]: RCFGBuilder took 3489.57 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 15.7 MB). Free memory was 856.5 MB in the beginning and 1.1 GB in the end (delta: -281.5 MB). Peak memory consumption was 133.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:19,527 INFO L168 Benchmark]: TraceAbstraction took 90320.38 ms. Allocated memory was 1.3 GB in the beginning and 1.5 GB in the end (delta: 230.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -23.2 MB). Peak memory consumption was 207.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:03:19,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1474.40 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 244.3 MB). Free memory was 943.3 MB in the beginning and 865.7 MB in the end (delta: 77.5 MB). Peak memory consumption was 342.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 1.3 GB. Free memory is still 865.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 95.29 ms. Allocated memory is still 1.3 GB. Free memory was 865.7 MB in the beginning and 856.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3489.57 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 15.7 MB). Free memory was 856.5 MB in the beginning and 1.1 GB in the end (delta: -281.5 MB). Peak memory consumption was 133.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 90320.38 ms. Allocated memory was 1.3 GB in the beginning and 1.5 GB in the end (delta: 230.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -23.2 MB). Peak memory consumption was 207.0 MB. 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...