./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/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 d3b9fd7fe4ecc5142fd3f383ee42b040964600c5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/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 d3b9fd7fe4ecc5142fd3f383ee42b040964600c5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:17:33,162 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:17:33,164 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:17:33,172 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:17:33,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:17:33,173 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:17:33,174 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:17:33,175 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:17:33,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:17:33,178 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:17:33,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:17:33,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:17:33,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:17:33,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:17:33,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:17:33,182 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:17:33,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:17:33,184 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:17:33,185 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:17:33,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:17:33,187 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:17:33,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:17:33,191 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:17:33,191 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:17:33,191 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:17:33,192 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:17:33,193 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:17:33,194 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:17:33,194 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:17:33,195 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:17:33,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:17:33,196 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:17:33,197 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:17:33,197 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:17:33,198 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:17:33,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:17:33,199 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:17:33,210 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:17:33,210 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:17:33,211 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:17:33,211 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:17:33,211 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:17:33,211 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:17:33,211 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:17:33,211 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:17:33,211 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:17:33,212 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:17:33,212 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:17:33,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:17:33,213 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:17:33,214 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:17:33,215 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:17:33,215 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:17:33,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:17:33,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:17:33,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:17:33,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:17:33,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:17:33,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:17:33,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:17:33,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:17:33,216 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:17:33,216 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:17:33,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:17:33,216 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:17:33,216 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_5cdf867e-e5e1-4a58-86de-700688ee81d4/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 -> d3b9fd7fe4ecc5142fd3f383ee42b040964600c5 [2018-10-26 20:17:33,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:17:33,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:17:33,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:17:33,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:17:33,269 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:17:33,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 20:17:33,315 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/322c89958/36b1efbefe5a4673a2c86b3ae1fd1839/FLAG5409e5b37 [2018-10-26 20:17:33,709 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:17:33,709 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 20:17:33,714 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/322c89958/36b1efbefe5a4673a2c86b3ae1fd1839/FLAG5409e5b37 [2018-10-26 20:17:33,727 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/322c89958/36b1efbefe5a4673a2c86b3ae1fd1839 [2018-10-26 20:17:33,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:17:33,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:17:33,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:17:33,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:17:33,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:17:33,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:33,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c72322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33, skipping insertion in model container [2018-10-26 20:17:33,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:33,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:17:33,765 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:17:33,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:17:33,921 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:17:33,950 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:17:33,969 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:17:33,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33 WrapperNode [2018-10-26 20:17:33,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:17:33,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:17:33,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:17:33,970 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:17:33,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:33,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:17:34,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:17:34,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:17:34,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:17:34,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... [2018-10-26 20:17:34,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:17:34,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:17:34,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:17:34,068 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:17:34,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/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 [2018-10-26 20:17:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:17:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:17:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:17:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:17:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:17:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:17:34,706 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:17:34,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:17:34 BoogieIcfgContainer [2018-10-26 20:17:34,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:17:34,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:17:34,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:17:34,711 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:17:34,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:17:33" (1/3) ... [2018-10-26 20:17:34,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8897ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:17:34, skipping insertion in model container [2018-10-26 20:17:34,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:33" (2/3) ... [2018-10-26 20:17:34,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8897ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:17:34, skipping insertion in model container [2018-10-26 20:17:34,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:17:34" (3/3) ... [2018-10-26 20:17:34,713 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 20:17:34,719 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:17:34,724 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:17:34,736 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:17:34,763 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:17:34,763 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:17:34,763 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:17:34,763 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:17:34,763 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:17:34,763 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:17:34,764 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:17:34,764 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:17:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-26 20:17:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 20:17:34,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:17:34,783 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:17:34,785 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:17:34,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:17:34,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1189108249, now seen corresponding path program 1 times [2018-10-26 20:17:34,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:17:34,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:17:34,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:17:34,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:17:34,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:17:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:17:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:17:35,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:17:35,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 20:17:35,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:17:35,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 20:17:35,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 20:17:35,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:17:35,036 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-10-26 20:17:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:17:35,190 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-26 20:17:35,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 20:17:35,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-10-26 20:17:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:17:35,197 INFO L225 Difference]: With dead ends: 35 [2018-10-26 20:17:35,197 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 20:17:35,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-26 20:17:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 20:17:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-26 20:17:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-26 20:17:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-26 20:17:35,231 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2018-10-26 20:17:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:17:35,231 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-26 20:17:35,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 20:17:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-26 20:17:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 20:17:35,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:17:35,233 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:17:35,233 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:17:35,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:17:35,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1204212286, now seen corresponding path program 1 times [2018-10-26 20:17:35,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:17:35,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:17:35,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:17:35,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:17:35,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:17:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:17:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:17:35,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:17:35,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:17:35,370 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:17:35,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:17:35,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:17:35,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:17:35,372 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-10-26 20:17:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:17:35,462 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-26 20:17:35,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:17:35,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 20:17:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:17:35,468 INFO L225 Difference]: With dead ends: 37 [2018-10-26 20:17:35,468 INFO L226 Difference]: Without dead ends: 29 [2018-10-26 20:17:35,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:17:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-26 20:17:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2018-10-26 20:17:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 20:17:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 20:17:35,474 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2018-10-26 20:17:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:17:35,474 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 20:17:35,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:17:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 20:17:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 20:17:35,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:17:35,475 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:17:35,475 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:17:35,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:17:35,475 INFO L82 PathProgramCache]: Analyzing trace with hash -900055575, now seen corresponding path program 1 times [2018-10-26 20:17:35,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:17:35,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:17:35,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:17:35,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:17:35,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:17:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:17:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:17:35,554 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:17:35,566 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,567 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,568 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,568 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,568 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,569 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,569 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,569 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,570 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,570 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,570 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,571 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,571 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,571 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,572 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,572 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,572 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,572 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,573 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,573 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,573 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,574 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,574 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,574 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:17:35,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:17:35 BoogieIcfgContainer [2018-10-26 20:17:35,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:17:35,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:17:35,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:17:35,591 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:17:35,592 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:17:34" (3/4) ... [2018-10-26 20:17:35,594 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:17:35,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:17:35,595 INFO L168 Benchmark]: Toolchain (without parser) took 1865.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -95.8 MB). Peak memory consumption was 53.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:35,596 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:17:35,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.49 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:35,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.08 ms. Allocated memory is still 1.0 GB. Free memory was 949.4 MB in the beginning and 946.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:35,598 INFO L168 Benchmark]: Boogie Preprocessor took 43.80 ms. Allocated memory is still 1.0 GB. Free memory was 946.7 MB in the beginning and 944.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:35,598 INFO L168 Benchmark]: RCFGBuilder took 639.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 944.0 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:35,599 INFO L168 Benchmark]: TraceAbstraction took 882.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:17:35,599 INFO L168 Benchmark]: Witness Printer took 3.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:17:35,602 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.49 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.08 ms. Allocated memory is still 1.0 GB. Free memory was 949.4 MB in the beginning and 946.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.80 ms. Allocated memory is still 1.0 GB. Free memory was 946.7 MB in the beginning and 944.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 639.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 944.0 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 882.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 48]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 35, overapproximation of to_real at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L1] int __return_main; [L7] int __return_129; VAL [\old(__return_129)=35, \old(__return_main)=46, __return_129=0, __return_main=0] [L10] int main__i; [L11] float main__z; [L12] float main__t; [L13] CALL float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] RET float main__min[5] = { 5, 10, 12, 30, 150 }; [L14] CALL float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] RET float main__max[5] = { 10, 12, 30, 150, 300 }; [L15] CALL float main__org[5] = { 1, 5, -10, 30, 20 }; [L15] RET float main__org[5] = { 1, 5, -10, 30, 20 }; [L15] RET float main__org[5] = { 1, 5, -10, 30, 20 }; [L15] RET float main__org[5] = { 1, 5, -10, 30, 20 }; [L15] RET float main__org[5] = { 1, 5, -10, 30, 20 }; [L15] RET float main__org[5] = { 1, 5, -10, 30, 20 }; [L15] RET float main__org[5] = { 1, 5, -10, 30, 20 }; [L16] CALL float main__slope[5] = { 4, -15, 40, -10, 0 }; [L16] RET float main__slope[5] = { 4, -15, 40, -10, 0 }; [L16] RET float main__slope[5] = { 4, -15, 40, -10, 0 }; [L16] RET float main__slope[5] = { 4, -15, 40, -10, 0 }; [L16] RET float main__slope[5] = { 4, -15, 40, -10, 0 }; [L16] RET float main__slope[5] = { 4, -15, 40, -10, 0 }; [L16] RET float main__slope[5] = { 4, -15, 40, -10, 0 }; [L17] main__t = __VERIFIER_nondet_float() [L18] int main____CPAchecker_TMP_0; [L19] CALL, EXPR main__min[0] [L19] RET, EXPR main__min[0] [L19] COND TRUE main__t >= (main__min[0]) [L21] CALL, EXPR main__max[4UL] [L21] RET, EXPR main__max[4UL] [L21] COND TRUE main__t <= (main__max[4UL]) [L23] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__i = 0 VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L28] COND TRUE main__i < 5UL [L30] CALL, EXPR main__max[main__i] [L30] RET, EXPR main__max[main__i] [L30] COND TRUE main__t <= (main__max[main__i]) [L33] CALL, EXPR main__org[main__i] [L33] RET, EXPR main__org[main__i] [L33] CALL, EXPR main__slope[main__i] [L33] RET, EXPR main__slope[main__i] [L33] CALL, EXPR main__min[main__i] [L33] RET, EXPR main__min[main__i] [L33] CALL, EXPR main__max[main__i] [L33] RET, EXPR main__max[main__i] [L33] CALL, EXPR main__min[main__i] [L33] RET, EXPR main__min[main__i] [L33] main__z = (main__org[main__i]) + (((main__slope[main__i]) * (main__t - (main__min[main__i]))) / ((main__max[main__i]) - (main__min[main__i]))) [L34] int main____CPAchecker_TMP_1; VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L35] COND FALSE !(main__z >= -10.0) VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L61] main____CPAchecker_TMP_1 = 0 VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L42] int __tmp_1; [L43] __tmp_1 = main____CPAchecker_TMP_1 [L44] int __VERIFIER_assert__cond; [L45] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L46] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_129)=0, __return_129=0, __return_main=0] [L48] __VERIFIER_error() VAL [\old(__return_129)=0, __return_129=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 77 SDs, 0 SdLazy, 19 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:17:37,397 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:17:37,398 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:17:37,407 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:17:37,408 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:17:37,409 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:17:37,410 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:17:37,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:17:37,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:17:37,413 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:17:37,414 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:17:37,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:17:37,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:17:37,415 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:17:37,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:17:37,418 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:17:37,418 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:17:37,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:17:37,421 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:17:37,422 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:17:37,423 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:17:37,425 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:17:37,426 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:17:37,426 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:17:37,427 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:17:37,427 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:17:37,429 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:17:37,429 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:17:37,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:17:37,434 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:17:37,434 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:17:37,435 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:17:37,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:17:37,435 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:17:37,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:17:37,436 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:17:37,436 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 20:17:37,452 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:17:37,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:17:37,453 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:17:37,454 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:17:37,454 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:17:37,454 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:17:37,454 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:17:37,455 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:17:37,456 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:17:37,457 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:17:37,457 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:17:37,457 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:17:37,457 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:17:37,457 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:17:37,457 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:17:37,458 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:17:37,458 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:17:37,458 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:17:37,458 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:17:37,458 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:17:37,459 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:17:37,459 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:17:37,459 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:17:37,460 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:17:37,460 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_5cdf867e-e5e1-4a58-86de-700688ee81d4/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 -> d3b9fd7fe4ecc5142fd3f383ee42b040964600c5 [2018-10-26 20:17:37,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:17:37,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:17:37,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:17:37,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:17:37,518 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:17:37,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 20:17:37,568 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/183a0ba82/ff7cd1ff72784a4d90409108f4db8598/FLAG5be5b4b62 [2018-10-26 20:17:37,986 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:17:37,986 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/sv-benchmarks/c/float-benchs/interpolation2_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 20:17:37,992 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/183a0ba82/ff7cd1ff72784a4d90409108f4db8598/FLAG5be5b4b62 [2018-10-26 20:17:38,005 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/data/183a0ba82/ff7cd1ff72784a4d90409108f4db8598 [2018-10-26 20:17:38,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:17:38,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:17:38,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:17:38,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:17:38,015 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:17:38,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142aa1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38, skipping insertion in model container [2018-10-26 20:17:38,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:17:38,055 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:17:38,227 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:17:38,231 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:17:38,276 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:17:38,302 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:17:38,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38 WrapperNode [2018-10-26 20:17:38,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:17:38,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:17:38,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:17:38,303 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:17:38,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:17:38,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:17:38,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:17:38,348 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:17:38,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... [2018-10-26 20:17:38,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:17:38,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:17:38,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:17:38,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:17:38,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/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 [2018-10-26 20:17:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:17:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:17:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:17:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:17:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:17:38,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:17:39,150 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:17:41,762 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:17:41,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:17:41 BoogieIcfgContainer [2018-10-26 20:17:41,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:17:41,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:17:41,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:17:41,766 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:17:41,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:17:38" (1/3) ... [2018-10-26 20:17:41,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1c7a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:17:41, skipping insertion in model container [2018-10-26 20:17:41,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:17:38" (2/3) ... [2018-10-26 20:17:41,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1c7a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:17:41, skipping insertion in model container [2018-10-26 20:17:41,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:17:41" (3/3) ... [2018-10-26 20:17:41,771 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2_true-unreach-call.c.v+cfa-reducer.c [2018-10-26 20:17:41,780 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:17:41,786 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:17:41,795 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:17:41,814 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:17:41,814 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:17:41,814 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:17:41,814 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:17:41,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:17:41,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:17:41,815 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:17:41,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:17:41,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:17:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-26 20:17:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 20:17:41,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:17:41,836 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:17:41,838 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:17:41,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:17:41,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1189108249, now seen corresponding path program 1 times [2018-10-26 20:17:41,848 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:17:41,848 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 20:17:41,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:17:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:17:42,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:17:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:17:42,347 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:17:42,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:17:42,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:17:42,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:17:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:17:42,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:17:42,372 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-10-26 20:17:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:17:44,888 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2018-10-26 20:17:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:17:44,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 20:17:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:17:44,896 INFO L225 Difference]: With dead ends: 38 [2018-10-26 20:17:44,896 INFO L226 Difference]: Without dead ends: 22 [2018-10-26 20:17:44,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:17:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-26 20:17:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-10-26 20:17:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 20:17:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2018-10-26 20:17:44,927 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2018-10-26 20:17:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:17:44,928 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-10-26 20:17:44,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:17:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2018-10-26 20:17:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 20:17:44,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:17:44,930 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:17:44,930 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:17:44,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:17:44,930 INFO L82 PathProgramCache]: Analyzing trace with hash -915159612, now seen corresponding path program 1 times [2018-10-26 20:17:44,931 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:17:44,931 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:17:44,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:17:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:17:45,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:17:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:17:45,439 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:17:45,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:17:45,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:17:45,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:17:45,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:17:45,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:17:45,455 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2018-10-26 20:17:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:17:47,635 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-10-26 20:17:47,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:17:47,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-26 20:17:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:17:47,636 INFO L225 Difference]: With dead ends: 24 [2018-10-26 20:17:47,636 INFO L226 Difference]: Without dead ends: 20 [2018-10-26 20:17:47,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:17:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-26 20:17:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-26 20:17:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 20:17:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 20:17:47,642 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-10-26 20:17:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:17:47,642 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 20:17:47,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:17:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 20:17:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 20:17:47,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:17:47,643 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:17:47,643 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:17:47,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:17:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash -900055575, now seen corresponding path program 1 times [2018-10-26 20:17:47,644 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:17:47,644 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5cdf867e-e5e1-4a58-86de-700688ee81d4/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:17:47,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:17:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:17:48,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:18:23,309 WARN L179 SmtUtils]: Spent 34.60 s on a formula simplification. DAG size of input: 166 DAG size of output: 142 [2018-10-26 20:18:23,693 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:18:23,694 INFO L303 Elim1Store]: Index analysis took 377 ms [2018-10-26 20:18:23,701 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 31 treesize of output 40 [2018-10-26 20:18:24,709 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:18:24,711 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 20:18:24,712 INFO L303 Elim1Store]: Index analysis took 973 ms [2018-10-26 20:18:24,714 INFO L477 Elim1Store]: Elim1 did not use 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2018-10-26 20:18:25,959 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:18:26,393 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:18:26,731 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:18:27,153 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:18:27,155 INFO L303 Elim1Store]: Index analysis took 2392 ms [2018-10-26 20:18:27,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2018-10-26 20:18:27,157 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 20:18:31,356 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:18:35,417 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:18:49,430 INFO L303 Elim1Store]: Index analysis took 2570 ms [2018-10-26 20:18:49,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 232 [2018-10-26 20:19:05,245 WARN L179 SmtUtils]: Spent 15.81 s on a formula simplification that was a NOOP. DAG size: 102 [2018-10-26 20:19:05,340 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 28 treesize of output 31 [2018-10-26 20:19:05,521 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:05,730 INFO L303 Elim1Store]: Index analysis took 387 ms [2018-10-26 20:19:05,731 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 31 treesize of output 39 [2018-10-26 20:19:05,869 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:05,928 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:06,023 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:06,517 INFO L303 Elim1Store]: Index analysis took 782 ms [2018-10-26 20:19:06,518 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 55 [2018-10-26 20:19:06,741 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:06,800 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:06,893 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:07,090 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:07,197 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:07,277 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:08,303 INFO L303 Elim1Store]: Index analysis took 1780 ms [2018-10-26 20:19:08,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 79 [2018-10-26 20:19:08,609 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:08,735 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:08,832 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:08,953 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:09,020 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:09,198 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:09,331 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:09,415 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:09,504 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:09,590 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:11,615 INFO L303 Elim1Store]: Index analysis took 3304 ms [2018-10-26 20:19:11,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 116 [2018-10-26 20:19:11,618 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 20:19:14,224 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:16,015 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:17,274 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:18,544 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:21,730 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:21,732 INFO L303 Elim1Store]: Index analysis took 1337 ms [2018-10-26 20:19:21,733 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 200 [2018-10-26 20:19:35,518 WARN L179 SmtUtils]: Spent 13.78 s on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2018-10-26 20:19:35,633 INFO L303 Elim1Store]: Index analysis took 114 ms [2018-10-26 20:19:35,634 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 58 treesize of output 57 [2018-10-26 20:19:35,827 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:35,974 INFO L303 Elim1Store]: Index analysis took 337 ms [2018-10-26 20:19:35,975 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 57 treesize of output 60 [2018-10-26 20:19:36,099 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,144 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,202 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,583 INFO L303 Elim1Store]: Index analysis took 605 ms [2018-10-26 20:19:36,584 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2018-10-26 20:19:36,742 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,796 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,853 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,953 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:36,989 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,018 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,407 INFO L303 Elim1Store]: Index analysis took 818 ms [2018-10-26 20:19:37,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 90 [2018-10-26 20:19:37,563 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,629 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,695 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,777 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,875 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:37,946 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:38,010 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:38,062 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:38,107 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:38,142 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:39,121 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:39,123 INFO L303 Elim1Store]: Index analysis took 1708 ms [2018-10-26 20:19:39,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 132 [2018-10-26 20:19:39,124 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 20:19:40,726 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:41,504 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:42,269 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:42,978 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:45,578 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:45,645 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:45,846 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:45,848 INFO L303 Elim1Store]: Index analysis took 1005 ms [2018-10-26 20:19:45,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 236 [2018-10-26 20:19:45,904 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 87 treesize of output 83 [2018-10-26 20:19:45,957 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:45,987 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 83 treesize of output 81 [2018-10-26 20:19:46,058 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,073 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,078 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,184 INFO L303 Elim1Store]: Index analysis took 194 ms [2018-10-26 20:19:46,185 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 87 [2018-10-26 20:19:46,373 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,417 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,457 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,512 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,551 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:46,591 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,101 INFO L303 Elim1Store]: Index analysis took 912 ms [2018-10-26 20:19:47,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 101 [2018-10-26 20:19:47,237 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,280 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,319 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,360 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,406 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,442 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,475 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,506 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,541 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:47,571 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:48,286 INFO L303 Elim1Store]: Index analysis took 1179 ms [2018-10-26 20:19:48,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 132 [2018-10-26 20:19:48,290 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-10-26 20:19:49,196 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:49,674 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:50,100 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:50,528 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:52,077 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,263 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,311 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,435 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,513 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,724 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,725 INFO L303 Elim1Store]: Index analysis took 817 ms [2018-10-26 20:19:52,726 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 293 [2018-10-26 20:19:52,753 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 116 treesize of output 109 [2018-10-26 20:19:52,847 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:52,897 INFO L303 Elim1Store]: Index analysis took 141 ms [2018-10-26 20:19:52,897 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 109 treesize of output 102 [2018-10-26 20:19:52,980 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,016 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,056 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,190 INFO L303 Elim1Store]: Index analysis took 289 ms [2018-10-26 20:19:53,191 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 103 [2018-10-26 20:19:53,311 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,320 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,345 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,378 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,412 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,445 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,864 INFO L303 Elim1Store]: Index analysis took 660 ms [2018-10-26 20:19:53,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 112 [2018-10-26 20:19:53,941 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,956 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,962 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,967 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,972 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,978 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,983 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,988 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,994 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:53,999 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:54,099 INFO L303 Elim1Store]: Index analysis took 229 ms [2018-10-26 20:19:54,100 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 140 [2018-10-26 20:19:54,101 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-26 20:19:54,236 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:54,311 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:54,460 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:54,532 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:54,759 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:54,927 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:55,095 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:55,264 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:55,712 INFO L267 ElimStorePlain]: Start of recursive call 1: 20 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:19:55,712 INFO L202 ElimStorePlain]: Needed 28 recursive calls to eliminate 22 variables, input treesize:545, output treesize:155 [2018-10-26 20:19:56,364 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2018-10-26 20:19:57,940 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:57,974 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,006 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,039 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,071 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,104 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,137 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,170 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,202 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,235 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,268 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,307 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:19:58,339 INFO L303 Elim1Store]: Index analysis took 1968 ms [2018-10-26 20:19:58,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 242 [2018-10-26 20:19:59,843 INFO L303 Elim1Store]: Index analysis took 1500 ms [2018-10-26 20:20:03,227 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 153 [2018-10-26 20:20:03,228 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-10-26 20:20:03,316 INFO L267 ElimStorePlain]: Start of recursive call 3: 195 dim-0 vars, End of recursive call: 195 dim-0 vars, and 54 xjuncts. [2018-10-26 20:20:23,625 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 20:20:23,626 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:258) 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:234) 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:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) 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) ... 47 more [2018-10-26 20:20:23,629 INFO L168 Benchmark]: Toolchain (without parser) took 165620.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 951.9 MB in the beginning and 976.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 174.8 MB. Max. memory is 11.5 GB. [2018-10-26 20:20:23,629 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:20:23,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.66 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:20:23,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:20:23,630 INFO L168 Benchmark]: Boogie Preprocessor took 37.08 ms. Allocated memory is still 1.0 GB. Free memory was 935.8 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:20:23,631 INFO L168 Benchmark]: RCFGBuilder took 3378.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:20:23,631 INFO L168 Benchmark]: TraceAbstraction took 161864.41 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 976.8 MB in the end (delta: 113.8 MB). Peak memory consumption was 171.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:20:23,645 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.66 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.08 ms. Allocated memory is still 1.0 GB. Free memory was 935.8 MB in the beginning and 930.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3378.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 930.4 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 161864.41 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.1 MB). Free memory was 1.1 GB in the beginning and 976.8 MB in the end (delta: 113.8 MB). Peak memory consumption was 171.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...