./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 32bit --witnessprinter.graph.data.programhash 1da26dc017449c0cb12d610e89da82d7cad61026 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 32bit --witnessprinter.graph.data.programhash 1da26dc017449c0cb12d610e89da82d7cad61026 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_39 term size 42 --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:33:59,152 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:33:59,153 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:33:59,160 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:33:59,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:33:59,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:33:59,162 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:33:59,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:33:59,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:33:59,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:33:59,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:33:59,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:33:59,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:33:59,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:33:59,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:33:59,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:33:59,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:33:59,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:33:59,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:33:59,173 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:33:59,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:33:59,174 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:33:59,176 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:33:59,176 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:33:59,176 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:33:59,177 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:33:59,177 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:33:59,178 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:33:59,179 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:33:59,179 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:33:59,180 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:33:59,180 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:33:59,180 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:33:59,180 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:33:59,181 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:33:59,181 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:33:59,182 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:33:59,191 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:33:59,191 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:33:59,192 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:33:59,192 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:33:59,192 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:33:59,192 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:33:59,193 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:33:59,194 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:33:59,194 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:33:59,194 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:33:59,194 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:33:59,195 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:33:59,196 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:33:59,196 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:33:59,196 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:33:59,196 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:33:59,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:33:59,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:33:59,196 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:33:59,196 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:33:59,197 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:33:59,197 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:33:59,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:33:59,197 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:33:59,197 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_e313c632-7267-425f-845c-be9d81041d21/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da26dc017449c0cb12d610e89da82d7cad61026 [2018-11-18 16:33:59,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:33:59,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:33:59,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:33:59,230 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:33:59,230 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:33:59,231 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-18 16:33:59,264 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/d27fd09a8/cb0ccae2c1124789b9626c699b1723e6/FLAGf900a9f2b [2018-11-18 16:33:59,700 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:33:59,701 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-18 16:33:59,708 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/d27fd09a8/cb0ccae2c1124789b9626c699b1723e6/FLAGf900a9f2b [2018-11-18 16:33:59,716 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/d27fd09a8/cb0ccae2c1124789b9626c699b1723e6 [2018-11-18 16:33:59,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:33:59,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:33:59,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:33:59,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:33:59,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:33:59,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:33:59" (1/1) ... [2018-11-18 16:33:59,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a782c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:33:59, skipping insertion in model container [2018-11-18 16:33:59,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:33:59" (1/1) ... [2018-11-18 16:33:59,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:33:59,758 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:33:59,958 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:33:59,965 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:34:00,048 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:34:00,076 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:34:00,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00 WrapperNode [2018-11-18 16:34:00,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:34:00,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:34:00,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:34:00,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:34:00,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:34:00,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:34:00,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:34:00,100 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:34:00,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... [2018-11-18 16:34:00,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:34:00,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:34:00,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:34:00,121 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:34:00,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:34:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-18 16:34:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-18 16:34:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:34:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:34:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 16:34:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 16:34:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2018-11-18 16:34:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2018-11-18 16:34:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:34:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-18 16:34:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-18 16:34:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:34:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:34:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:34:00,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:34:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:34:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:34:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:34:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 16:34:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 16:34:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:34:00,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:34:00,433 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:34:00,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:34:00 BoogieIcfgContainer [2018-11-18 16:34:00,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:34:00,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:34:00,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:34:00,436 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:34:00,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:33:59" (1/3) ... [2018-11-18 16:34:00,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c399b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:34:00, skipping insertion in model container [2018-11-18 16:34:00,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:34:00" (2/3) ... [2018-11-18 16:34:00,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c399b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:34:00, skipping insertion in model container [2018-11-18 16:34:00,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:34:00" (3/3) ... [2018-11-18 16:34:00,439 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-18 16:34:00,445 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:34:00,450 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:34:00,459 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:34:00,480 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:34:00,480 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:34:00,480 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:34:00,480 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:34:00,481 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:34:00,481 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:34:00,481 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:34:00,481 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:34:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-11-18 16:34:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:34:00,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:00,498 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:34:00,500 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:00,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:00,504 INFO L82 PathProgramCache]: Analyzing trace with hash -784863507, now seen corresponding path program 1 times [2018-11-18 16:34:00,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:34:00,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:00,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,541 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:34:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:34:00,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:00,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:34:00,616 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:34:00,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:34:00,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:34:00,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:34:00,631 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-11-18 16:34:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:00,651 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2018-11-18 16:34:00,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:34:00,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-18 16:34:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:00,658 INFO L225 Difference]: With dead ends: 104 [2018-11-18 16:34:00,659 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 16:34:00,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:34:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 16:34:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-18 16:34:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 16:34:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-11-18 16:34:00,689 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 29 [2018-11-18 16:34:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:00,689 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-11-18 16:34:00,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:34:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-11-18 16:34:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:34:00,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:00,691 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:34:00,691 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:00,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1056847263, now seen corresponding path program 1 times [2018-11-18 16:34:00,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:34:00,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:00,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,693 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:34:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:34:00,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:00,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:34:00,768 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:34:00,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:34:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:34:00,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:34:00,770 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 5 states. [2018-11-18 16:34:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:00,818 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2018-11-18 16:34:00,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:34:00,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-18 16:34:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:00,819 INFO L225 Difference]: With dead ends: 82 [2018-11-18 16:34:00,819 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 16:34:00,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:34:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 16:34:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-11-18 16:34:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 16:34:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2018-11-18 16:34:00,826 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2018-11-18 16:34:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:00,827 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2018-11-18 16:34:00,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:34:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2018-11-18 16:34:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 16:34:00,827 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:00,828 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:34:00,828 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:00,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1336447668, now seen corresponding path program 1 times [2018-11-18 16:34:00,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:34:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,829 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:34:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:34:00,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:34:00,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:34:00,892 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:34:00,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:34:00,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:34:00,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:34:00,893 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 3 states. [2018-11-18 16:34:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:00,911 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2018-11-18 16:34:00,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:34:00,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-18 16:34:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:00,913 INFO L225 Difference]: With dead ends: 88 [2018-11-18 16:34:00,913 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 16:34:00,913 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 16:34:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 16:34:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-18 16:34:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 16:34:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2018-11-18 16:34:00,918 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 41 [2018-11-18 16:34:00,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:00,918 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2018-11-18 16:34:00,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:34:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2018-11-18 16:34:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 16:34:00,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:00,920 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:34:00,920 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:00,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1470461174, now seen corresponding path program 1 times [2018-11-18 16:34:00,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:34:00,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:00,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:00,922 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:34:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:34:00,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:34:00,991 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:34:00,991 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-11-18 16:34:00,993 INFO L202 CegarAbsIntRunner]: [0], [2], [4], [34], [38], [43], [65], [66], [67], [71], [75], [77], [79], [84], [86], [90], [91], [92], [94], [97], [116], [120], [126], [128], [129], [130], [131], [132], [133], [136], [137], [138], [139], [140], [141], [142] [2018-11-18 16:34:01,019 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:34:01,019 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:34:01,155 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:34:01,156 INFO L272 AbstractInterpreter]: Visited 20 different actions 31 times. Merged at 5 different actions 5 times. Never widened. Performed 246 root evaluator evaluations with a maximum evaluation depth of 3. Performed 246 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-18 16:34:01,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:01,160 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:34:01,225 INFO L227 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 76.4% of their original sizes. [2018-11-18 16:34:01,226 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:34:01,394 INFO L415 sIntCurrentIteration]: We unified 40 AI predicates to 40 [2018-11-18 16:34:01,394 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:34:01,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:34:01,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-18 16:34:01,395 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:34:01,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 16:34:01,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 16:34:01,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-11-18 16:34:01,396 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 13 states. [2018-11-18 16:34:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:34:02,134 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2018-11-18 16:34:02,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:34:02,134 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2018-11-18 16:34:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:34:02,135 INFO L225 Difference]: With dead ends: 93 [2018-11-18 16:34:02,135 INFO L226 Difference]: Without dead ends: 62 [2018-11-18 16:34:02,136 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-18 16:34:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-18 16:34:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-18 16:34:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 16:34:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-11-18 16:34:02,143 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 41 [2018-11-18 16:34:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:34:02,143 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-11-18 16:34:02,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 16:34:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-11-18 16:34:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 16:34:02,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:34:02,145 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-18 16:34:02,145 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:34:02,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1840457469, now seen corresponding path program 1 times [2018-11-18 16:34:02,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:34:02,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:02,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:02,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:34:02,147 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:34:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:34:02,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:34:02,547 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:34:02,547 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-11-18 16:34:02,547 INFO L202 CegarAbsIntRunner]: [0], [2], [4], [34], [38], [43], [65], [66], [67], [71], [75], [77], [79], [82], [84], [86], [90], [91], [92], [94], [97], [116], [120], [126], [128], [129], [130], [131], [132], [133], [136], [137], [138], [139], [140], [141], [142] [2018-11-18 16:34:02,548 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:34:02,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:34:02,623 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 16:34:02,623 INFO L272 AbstractInterpreter]: Visited 37 different actions 67 times. Merged at 6 different actions 12 times. Never widened. Performed 520 root evaluator evaluations with a maximum evaluation depth of 3. Performed 520 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-18 16:34:02,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:34:02,627 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 16:34:02,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:34:02,628 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:34:02,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:34:02,643 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:34:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:34:02,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:34:02,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 16:34:02,718 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:02,731 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:34:02,731 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 16:34:04,113 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:34:04,114 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:34:04,114 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:34:04,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 40 [2018-11-18 16:34:04,127 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2018-11-18 16:34:04,128 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:04,135 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:34:04,143 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:34:04,143 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:35 [2018-11-18 16:34:04,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 16:34:04,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:34:04,192 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:04,193 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:34:04,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:34:04,202 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:51 [2018-11-18 16:34:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 9 refuted. 9 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 16:34:15,286 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:34:19,167 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_dll_append_~head.offset_BEFORE_CALL_2 Int) (node_create_~temp~0.offset Int) (v_dll_append_~head.base_BEFORE_CALL_2 Int)) (or (exists ((v_node_create_~temp~0.offset_13 Int) (v_node_create_~temp~0.base_13 Int)) (and (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13 (store (store (select |c_old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) 0)) v_dll_append_~head.base_BEFORE_CALL_2) v_dll_append_~head.offset_BEFORE_CALL_2)) (= 0 (select |c_old(#valid)| v_node_create_~temp~0.base_13)))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| c_node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| c_node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) (+ node_create_~temp~0.offset 8) 0)) v_dll_append_~head.base_BEFORE_CALL_2) v_dll_append_~head.offset_BEFORE_CALL_2))))) is different from false [2018-11-18 16:34:39,872 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2018-11-18 16:34:39,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-11-18 16:34:39,888 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:39,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-18 16:34:39,900 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-18 16:34:39,900 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:39,902 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:34:39,903 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2018-11-18 16:34:39,912 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 33 [2018-11-18 16:34:39,940 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 4 [2018-11-18 16:34:39,940 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:39,942 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:34:39,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2018-11-18 16:34:39,943 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:39,951 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 6 [2018-11-18 16:34:39,951 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 16:34:39,954 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 16:34:39,959 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 16:34:39,967 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 16:34:39,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-18 16:34:39,976 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:46, output treesize:18 [2018-11-18 16:34:42,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:48,310 WARN L180 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-18 16:34:48,314 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:48,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:52,524 WARN L180 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-18 16:34:52,528 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:52,532 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:52,537 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:57,642 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-18 16:34:57,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:34:57,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-18 16:35:03,876 WARN L180 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-18 16:35:04,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 42 [2018-11-18 16:35:04,483 WARN L177 XnfTransformerHelper]: Simplifying conjuction of 23517 disjunctions. This might take some time... [2018-11-18 16:35:04,723 INFO L193 XnfTransformerHelper]: Simplified to conjuction of 20 disjunctions. [2018-11-18 16:35:04,726 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2018-11-18 16:35:04,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-18 16:35:07,413 WARN L180 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 105 [2018-11-18 16:35:07,617 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:35:07,618 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 21710 column 11: unknown constant v_prenex_11 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:114) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:136) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:667) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:759) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) 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.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) 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 16:35:07,620 INFO L168 Benchmark]: Toolchain (without parser) took 67902.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 242.7 MB). Free memory was 956.4 MB in the beginning and 758.9 MB in the end (delta: 197.6 MB). Peak memory consumption was 440.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:35:07,621 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:35:07,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -104.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:35:07,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:35:07,622 INFO L168 Benchmark]: Boogie Preprocessor took 21.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:35:07,622 INFO L168 Benchmark]: RCFGBuilder took 312.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:35:07,623 INFO L168 Benchmark]: TraceAbstraction took 67186.12 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 164.1 MB). Free memory was 1.0 GB in the beginning and 758.9 MB in the end (delta: 264.8 MB). Peak memory consumption was 428.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:35:07,625 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -104.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 312.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 67186.12 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 164.1 MB). Free memory was 1.0 GB in the beginning and 758.9 MB in the end (delta: 264.8 MB). Peak memory consumption was 428.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 21710 column 11: unknown constant v_prenex_11 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 21710 column 11: unknown constant v_prenex_11: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) 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 16:35:09,026 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:35:09,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:35:09,036 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:35:09,036 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:35:09,037 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:35:09,037 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:35:09,039 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:35:09,040 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:35:09,040 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:35:09,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:35:09,041 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:35:09,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:35:09,043 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:35:09,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:35:09,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:35:09,044 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:35:09,045 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:35:09,047 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:35:09,048 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:35:09,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:35:09,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:35:09,052 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:35:09,052 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:35:09,052 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:35:09,053 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:35:09,054 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:35:09,054 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:35:09,055 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:35:09,056 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:35:09,056 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:35:09,056 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:35:09,056 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:35:09,056 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:35:09,057 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:35:09,058 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:35:09,058 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 16:35:09,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:35:09,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:35:09,072 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:35:09,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:35:09,073 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:35:09,073 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:35:09,073 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:35:09,073 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:35:09,073 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:35:09,073 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:35:09,074 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:35:09,074 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:35:09,074 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:35:09,074 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:35:09,074 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:35:09,075 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:35:09,076 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:35:09,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:35:09,076 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:35:09,076 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:35:09,076 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:35:09,076 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:35:09,076 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:35:09,076 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:35:09,077 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:35:09,077 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:35:09,077 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:35:09,077 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:35:09,077 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:35:09,077 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_e313c632-7267-425f-845c-be9d81041d21/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da26dc017449c0cb12d610e89da82d7cad61026 [2018-11-18 16:35:09,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:35:09,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:35:09,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:35:09,119 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:35:09,119 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:35:09,120 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-18 16:35:09,159 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/9065eb94c/27785634c0a746599d5acf9a4c1203f8/FLAG30bb55ca0 [2018-11-18 16:35:09,589 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:35:09,590 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-18 16:35:09,597 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/9065eb94c/27785634c0a746599d5acf9a4c1203f8/FLAG30bb55ca0 [2018-11-18 16:35:09,606 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/bin-2019/utaipan/data/9065eb94c/27785634c0a746599d5acf9a4c1203f8 [2018-11-18 16:35:09,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:35:09,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:35:09,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:35:09,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:35:09,612 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:35:09,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:09,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b48a8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09, skipping insertion in model container [2018-11-18 16:35:09,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:09,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:35:09,649 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:35:09,863 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:35:09,872 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:35:09,908 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:35:09,982 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:35:09,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09 WrapperNode [2018-11-18 16:35:09,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:35:09,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:35:09,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:35:09,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:35:09,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:35:10,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:35:10,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:35:10,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:35:10,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... [2018-11-18 16:35:10,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:35:10,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:35:10,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:35:10,036 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:35:10,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-18 16:35:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-18 16:35:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:35:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 16:35:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 16:35:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 16:35:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2018-11-18 16:35:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2018-11-18 16:35:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-18 16:35:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-18 16:35:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:35:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:35:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-18 16:35:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-18 16:35:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:35:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:35:10,362 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:35:10,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:35:10 BoogieIcfgContainer [2018-11-18 16:35:10,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:35:10,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:35:10,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:35:10,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:35:10,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:35:09" (1/3) ... [2018-11-18 16:35:10,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4485f051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:35:10, skipping insertion in model container [2018-11-18 16:35:10,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:35:09" (2/3) ... [2018-11-18 16:35:10,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4485f051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:35:10, skipping insertion in model container [2018-11-18 16:35:10,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:35:10" (3/3) ... [2018-11-18 16:35:10,367 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-18 16:35:10,374 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:35:10,380 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:35:10,389 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:35:10,406 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:35:10,407 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:35:10,407 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:35:10,407 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:35:10,407 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:35:10,407 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:35:10,407 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:35:10,407 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:35:10,407 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:35:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-11-18 16:35:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:35:10,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:35:10,421 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:35:10,423 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:35:10,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:35:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash -784863507, now seen corresponding path program 1 times [2018-11-18 16:35:10,428 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:35:10,429 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:10,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:10,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:35:10,548 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:35:10,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:35:10,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:35:10,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:35:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:35:10,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:35:10,573 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-11-18 16:35:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:35:10,594 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2018-11-18 16:35:10,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:35:10,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-18 16:35:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:35:10,603 INFO L225 Difference]: With dead ends: 104 [2018-11-18 16:35:10,603 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 16:35:10,606 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:35:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 16:35:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-18 16:35:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 16:35:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-11-18 16:35:10,641 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 29 [2018-11-18 16:35:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:35:10,641 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-11-18 16:35:10,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:35:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-11-18 16:35:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:35:10,643 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:35:10,643 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:35:10,644 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:35:10,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:35:10,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1056847263, now seen corresponding path program 1 times [2018-11-18 16:35:10,645 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:35:10,645 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:10,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:10,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:35:10,734 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:35:10,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:35:10,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:35:10,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:35:10,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:35:10,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:35:10,739 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 5 states. [2018-11-18 16:35:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:35:10,793 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2018-11-18 16:35:10,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:35:10,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-18 16:35:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:35:10,795 INFO L225 Difference]: With dead ends: 82 [2018-11-18 16:35:10,795 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 16:35:10,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:35:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 16:35:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-11-18 16:35:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 16:35:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2018-11-18 16:35:10,804 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2018-11-18 16:35:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:35:10,804 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2018-11-18 16:35:10,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:35:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2018-11-18 16:35:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 16:35:10,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:35:10,806 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:35:10,806 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:35:10,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:35:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1336447668, now seen corresponding path program 1 times [2018-11-18 16:35:10,806 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:35:10,807 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:10,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:10,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:35:10,897 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:35:10,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:35:10,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:35:10,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:35:10,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:35:10,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:35:10,899 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 3 states. [2018-11-18 16:35:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:35:10,926 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2018-11-18 16:35:10,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:35:10,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-18 16:35:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:35:10,928 INFO L225 Difference]: With dead ends: 88 [2018-11-18 16:35:10,928 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 16:35:10,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 16:35:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 16:35:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-18 16:35:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 16:35:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2018-11-18 16:35:10,936 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 41 [2018-11-18 16:35:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:35:10,936 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2018-11-18 16:35:10,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:35:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2018-11-18 16:35:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 16:35:10,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:35:10,937 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:35:10,938 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:35:10,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:35:10,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1470461174, now seen corresponding path program 1 times [2018-11-18 16:35:10,940 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:35:10,940 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:10,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:11,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:35:11,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:35:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:35:11,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:35:11,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:11,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:11,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:35:11,365 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:35:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 16:35:11,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 16:35:11,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7] total 16 [2018-11-18 16:35:11,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 16:35:11,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 16:35:11,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-18 16:35:11,583 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 16 states. [2018-11-18 16:35:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:35:11,780 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-11-18 16:35:11,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:35:11,781 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-11-18 16:35:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:35:11,782 INFO L225 Difference]: With dead ends: 88 [2018-11-18 16:35:11,782 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 16:35:11,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-11-18 16:35:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 16:35:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-11-18 16:35:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 16:35:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2018-11-18 16:35:11,787 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 41 [2018-11-18 16:35:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:35:11,787 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2018-11-18 16:35:11,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 16:35:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2018-11-18 16:35:11,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 16:35:11,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:35:11,788 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-18 16:35:11,788 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:35:11,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:35:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1840457469, now seen corresponding path program 1 times [2018-11-18 16:35:11,789 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:35:11,789 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:11,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:11,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:12,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 16:35:12,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:35:12,011 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:12,013 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:12,020 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:12,020 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2018-11-18 16:35:14,103 WARN L854 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.base (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (_ bv4 32) (_ bv0 32)) (_ bv8 32) (_ bv0 32))))) is different from true [2018-11-18 16:35:18,155 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 16:35:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2018-11-18 16:35:18,258 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:35:18,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:35:18,471 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:18,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:18,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:18,547 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 16:35:18,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:35:18,550 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:18,558 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:18,564 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:18,564 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2018-11-18 16:35:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2018-11-18 16:35:18,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:35:18,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:35:18,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-18 16:35:18,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 16:35:18,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 16:35:18,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=268, Unknown=2, NotChecked=32, Total=342 [2018-11-18 16:35:18,799 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 18 states. [2018-11-18 16:35:21,025 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-18 16:35:25,458 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 24 [2018-11-18 16:35:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:35:29,932 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2018-11-18 16:35:29,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 16:35:29,933 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2018-11-18 16:35:29,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:35:29,933 INFO L225 Difference]: With dead ends: 92 [2018-11-18 16:35:29,933 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 16:35:29,934 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=69, Invalid=485, Unknown=2, NotChecked=44, Total=600 [2018-11-18 16:35:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 16:35:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-18 16:35:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 16:35:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2018-11-18 16:35:29,939 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 52 [2018-11-18 16:35:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:35:29,940 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2018-11-18 16:35:29,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 16:35:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2018-11-18 16:35:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 16:35:29,941 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:35:29,941 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-18 16:35:29,942 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:35:29,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:35:29,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1316125421, now seen corresponding path program 1 times [2018-11-18 16:35:29,942 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:35:29,942 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:29,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:30,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:30,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 16:35:30,107 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,115 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,115 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 16:35:30,275 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 16:35:30,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 16:35:30,278 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,280 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2018-11-18 16:35:30,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:35:30,359 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 80 [2018-11-18 16:35:30,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-11-18 16:35:30,363 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,414 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:35:30,414 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:79, output treesize:69 [2018-11-18 16:35:30,781 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:35:30,783 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:35:30,784 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:35:30,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 60 [2018-11-18 16:35:30,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 52 [2018-11-18 16:35:30,794 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,834 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:30,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:35:30,868 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:79, output treesize:78 [2018-11-18 16:35:31,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2018-11-18 16:35:31,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:35:31,067 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:31,094 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:31,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 16:35:31,163 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:35:31,164 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:31,170 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:31,207 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:35:31,207 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:89, output treesize:112 [2018-11-18 16:35:36,022 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 31 [2018-11-18 16:35:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 16:35:36,967 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:35:37,393 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2018-11-18 16:35:37,667 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-18 16:35:38,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:35:38,022 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e313c632-7267-425f-845c-be9d81041d21/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 16:35:38,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:35:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:35:38,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:35:38,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 16:35:38,138 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,141 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,142 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 16:35:38,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 16:35:38,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:35:38,649 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 16:35:38,668 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 16:35:38,668 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,670 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:35:38,678 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:31, output treesize:20 [2018-11-18 16:36:42,820 WARN L180 SmtUtils]: Spent 9.40 s on a formula simplification. DAG size of input: 177 DAG size of output: 52 [2018-11-18 16:36:42,888 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:36:42,912 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:36:42,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 8 [2018-11-18 16:36:42,913 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 16:36:43,202 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:36:43,342 INFO L303 Elim1Store]: Index analysis took 162 ms [2018-11-18 16:36:43,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 227 [2018-11-18 16:37:42,647 WARN L180 SmtUtils]: Spent 58.97 s on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2018-11-18 16:37:42,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 195 [2018-11-18 16:37:42,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-11-18 16:37:42,684 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 16:37:42,833 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:37:50,569 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:50,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 169 [2018-11-18 16:37:50,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:50,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 181 [2018-11-18 16:37:50,621 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 16:37:50,822 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:37:55,797 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:55,797 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:37:55,874 INFO L303 Elim1Store]: Index analysis took 104 ms [2018-11-18 16:37:55,875 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 221 [2018-11-18 16:37:55,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2018-11-18 16:37:55,896 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 16:37:56,054 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:56,070 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:37:56,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 177 [2018-11-18 16:37:56,098 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:56,103 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:56,104 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 175 [2018-11-18 16:37:56,104 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 16:37:56,165 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:37:56,240 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:37:58,163 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:37:58,219 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:37:58,364 INFO L303 Elim1Store]: Index analysis took 250 ms [2018-11-18 16:37:58,487 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 172 treesize of output 252 [2018-11-18 16:37:58,501 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 235 [2018-11-18 16:37:58,502 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:00,655 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:00,667 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:00,668 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:00,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 292 [2018-11-18 16:38:00,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-11-18 16:38:00,677 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:00,774 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:02,171 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:02,194 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:02,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 276 [2018-11-18 16:38:02,234 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 56 [2018-11-18 16:38:02,234 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:02,340 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:03,280 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:03,343 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:03,387 INFO L303 Elim1Store]: Index analysis took 129 ms [2018-11-18 16:38:03,457 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 167 treesize of output 189 [2018-11-18 16:38:03,459 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-11-18 16:38:03,874 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 16:38:04,794 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:04,836 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:04,979 INFO L303 Elim1Store]: Index analysis took 221 ms [2018-11-18 16:38:05,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 173 treesize of output 255 [2018-11-18 16:38:05,097 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:05,098 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 338 [2018-11-18 16:38:05,099 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:07,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 187 [2018-11-18 16:38:07,142 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:09,350 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:09,366 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:09,381 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 297 [2018-11-18 16:38:09,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 56 [2018-11-18 16:38:09,388 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:09,446 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:10,398 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:10,461 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:10,498 INFO L303 Elim1Store]: Index analysis took 137 ms [2018-11-18 16:38:10,610 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 190 [2018-11-18 16:38:10,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 180 [2018-11-18 16:38:10,617 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:10,768 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 16:38:11,280 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:11,420 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:11,510 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:11,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 140 treesize of output 112 [2018-11-18 16:38:14,437 WARN L180 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2018-11-18 16:38:14,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 102 [2018-11-18 16:38:14,447 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-11-18 16:38:14,448 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:14,486 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:15,840 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:15,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 77 [2018-11-18 16:38:15,857 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:15,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 68 [2018-11-18 16:38:15,870 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:15,918 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 16:38:17,210 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,210 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:17,226 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,227 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 94 [2018-11-18 16:38:17,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2018-11-18 16:38:17,233 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:17,269 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,271 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,274 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 77 [2018-11-18 16:38:17,283 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,284 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:17,333 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 115 [2018-11-18 16:38:17,335 INFO L267 ElimStorePlain]: Start of recursive call 34: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:17,419 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:17,479 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:18,486 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:18,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 104 [2018-11-18 16:38:18,551 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 96 [2018-11-18 16:38:18,552 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:19,046 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,048 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 85 [2018-11-18 16:38:19,049 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:19,356 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,357 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,361 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,361 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 83 [2018-11-18 16:38:19,398 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 54 [2018-11-18 16:38:19,399 INFO L267 ElimStorePlain]: Start of recursive call 39: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:19,445 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:19,804 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,806 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,813 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:19,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 99 [2018-11-18 16:38:19,866 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 62 [2018-11-18 16:38:19,868 INFO L267 ElimStorePlain]: Start of recursive call 41: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:19,923 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:20,249 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:20,254 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:20,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:20,274 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 94 [2018-11-18 16:38:20,322 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 62 [2018-11-18 16:38:20,324 INFO L267 ElimStorePlain]: Start of recursive call 43: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:20,430 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 16:38:20,723 INFO L267 ElimStorePlain]: Start of recursive call 35: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 7 xjuncts. [2018-11-18 16:38:21,890 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:21,964 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 97 [2018-11-18 16:38:21,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 91 [2018-11-18 16:38:21,971 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:22,240 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,245 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,245 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:22,247 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,252 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 100 [2018-11-18 16:38:22,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,258 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-11-18 16:38:22,259 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-11-18 16:38:22,283 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:38:22,311 INFO L267 ElimStorePlain]: Start of recursive call 46: 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 16:38:22,602 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,618 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,635 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 94 [2018-11-18 16:38:22,699 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,701 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 16:38:22,702 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 16:38:22,907 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:38:22,908 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_39 term size 42 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) 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 16:38:22,911 INFO L168 Benchmark]: Toolchain (without parser) took 193303.05 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 241.2 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 437.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:38:22,912 INFO L168 Benchmark]: CDTParser took 0.16 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 16:38:22,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:38:22,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:38:22,914 INFO L168 Benchmark]: Boogie Preprocessor took 26.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:38:22,914 INFO L168 Benchmark]: RCFGBuilder took 327.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:38:22,914 INFO L168 Benchmark]: TraceAbstraction took 192547.41 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 127.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.0 MB). Peak memory consumption was 438.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:38:22,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 373.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 327.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 192547.41 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 127.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.0 MB). Peak memory consumption was 438.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_39 term size 42 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_39 term size 42: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...