./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i --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_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/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 279fae57395782089eff32ec1396d1726d808c7f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/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 279fae57395782089eff32ec1396d1726d808c7f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:58:07,240 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:58:07,242 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:58:07,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:58:07,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:58:07,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:58:07,253 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:58:07,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:58:07,256 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:58:07,257 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:58:07,258 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:58:07,258 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:58:07,259 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:58:07,259 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:58:07,260 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:58:07,261 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:58:07,262 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:58:07,264 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:58:07,266 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:58:07,267 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:58:07,268 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:58:07,270 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:58:07,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:58:07,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:58:07,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:58:07,273 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:58:07,274 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:58:07,275 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:58:07,275 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:58:07,276 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:58:07,276 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:58:07,277 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:58:07,277 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:58:07,277 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:58:07,279 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:58:07,279 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:58:07,279 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-27 00:58:07,291 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:58:07,291 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:58:07,292 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:58:07,292 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:58:07,292 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:58:07,292 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:58:07,292 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:58:07,293 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:58:07,293 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:58:07,293 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:58:07,293 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:58:07,295 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:58:07,295 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:58:07,295 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:58:07,295 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:58:07,296 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:58:07,296 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:58:07,296 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:58:07,296 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:58:07,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:58:07,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:58:07,297 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:58:07,297 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:58:07,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:58:07,299 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:58:07,299 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:58:07,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:58:07,299 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:58:07,299 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:58:07,300 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:58:07,300 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:58:07,300 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:58:07,300 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:58:07,300 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:58:07,300 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_81156ec9-bf12-4a3a-bf81-bf8ff5871167/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 -> 279fae57395782089eff32ec1396d1726d808c7f [2018-10-27 00:58:07,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:58:07,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:58:07,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:58:07,344 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:58:07,344 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:58:07,345 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-10-27 00:58:07,385 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/9a7a7c044/4d7ef090b1c849dfb05233fdc1e78be4/FLAG877a11b6e [2018-10-27 00:58:07,763 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:58:07,764 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-10-27 00:58:07,768 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/9a7a7c044/4d7ef090b1c849dfb05233fdc1e78be4/FLAG877a11b6e [2018-10-27 00:58:07,780 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/9a7a7c044/4d7ef090b1c849dfb05233fdc1e78be4 [2018-10-27 00:58:07,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:58:07,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:58:07,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:07,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:58:07,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:58:07,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:07,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12156533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07, skipping insertion in model container [2018-10-27 00:58:07,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:07,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:58:07,817 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:58:07,940 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:07,945 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:58:07,967 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:07,977 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:58:07,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07 WrapperNode [2018-10-27 00:58:07,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:07,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:07,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:58:07,978 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:58:07,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:07,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:08,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:58:08,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:58:08,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:58:08,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... [2018-10-27 00:58:08,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:58:08,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:58:08,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:58:08,039 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:58:08,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/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 [2018-10-27 00:58:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:58:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:58:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:58:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:58:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-10-27 00:58:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-10-27 00:58:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-10-27 00:58:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-10-27 00:58:08,678 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:58:08,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:08 BoogieIcfgContainer [2018-10-27 00:58:08,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:58:08,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:58:08,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:58:08,683 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:58:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:58:07" (1/3) ... [2018-10-27 00:58:08,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddfe5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:08, skipping insertion in model container [2018-10-27 00:58:08,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:07" (2/3) ... [2018-10-27 00:58:08,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddfe5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:08, skipping insertion in model container [2018-10-27 00:58:08,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:08" (3/3) ... [2018-10-27 00:58:08,687 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum_false-unreach-call_true-termination.i [2018-10-27 00:58:08,696 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:58:08,704 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:58:08,718 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:58:08,747 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:58:08,747 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:58:08,747 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:58:08,747 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:58:08,747 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:58:08,747 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:58:08,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:58:08,748 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:58:08,763 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-27 00:58:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 00:58:08,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:08,770 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:08,772 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:08,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:08,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1453479608, now seen corresponding path program 1 times [2018-10-27 00:58:08,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:58:08,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:08,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:08,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:08,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:58:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:08,913 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-10-27 00:58:08,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:58:08,915 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:58:08,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-10-27 00:58:08,918 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [10], [12], [14], [27], [29], [31], [34], [35], [46], [64], [68], [70], [71], [84], [86], [87], [88], [89], [91], [92], [93], [94], [95], [96], [97], [98] [2018-10-27 00:58:08,976 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:58:08,976 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:58:09,136 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:58:09,137 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 40 variables. [2018-10-27 00:58:09,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:09,166 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:58:09,260 INFO L227 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 89.94% of their original sizes. [2018-10-27 00:58:09,260 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:58:09,422 INFO L415 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2018-10-27 00:58:09,422 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:58:09,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:09,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:58:09,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:58:09,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:58:09,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:58:09,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:58:09,432 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-10-27 00:58:09,951 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:58:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:10,585 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2018-10-27 00:58:10,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:58:10,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-10-27 00:58:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:10,596 INFO L225 Difference]: With dead ends: 77 [2018-10-27 00:58:10,598 INFO L226 Difference]: Without dead ends: 36 [2018-10-27 00:58:10,601 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:58:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-27 00:58:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-27 00:58:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-27 00:58:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-10-27 00:58:10,642 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 38 [2018-10-27 00:58:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:10,643 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-10-27 00:58:10,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:58:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-10-27 00:58:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 00:58:10,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:10,646 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:10,646 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:10,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:10,647 INFO L82 PathProgramCache]: Analyzing trace with hash -538232150, now seen corresponding path program 1 times [2018-10-27 00:58:10,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:58:10,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:10,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:10,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:10,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:58:10,667 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-27 00:58:10,667 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-27 00:58:10,667 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-27 00:58:10,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:10,676 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-27 00:58:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:10,741 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-10-27 00:58:10,741 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [10], [12], [14], [18], [21], [29], [31], [34], [35], [46], [50], [53], [68], [70], [71], [75], [78], [86], [87], [88], [89], [91], [92], [93], [94], [95], [96], [97], [98] [2018-10-27 00:58:10,744 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:58:10,744 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:58:10,766 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:58:10,766 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 40 variables. [2018-10-27 00:58:10,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:10,794 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:58:10,851 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 88.22% of their original sizes. [2018-10-27 00:58:10,852 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:58:11,107 INFO L415 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2018-10-27 00:58:11,107 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:58:11,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:11,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:58:11,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:58:11,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:58:11,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:58:11,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:58:11,110 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2018-10-27 00:58:11,764 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:58:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:12,438 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2018-10-27 00:58:12,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:58:12,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-10-27 00:58:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:12,439 INFO L225 Difference]: With dead ends: 63 [2018-10-27 00:58:12,440 INFO L226 Difference]: Without dead ends: 39 [2018-10-27 00:58:12,441 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:58:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-27 00:58:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-10-27 00:58:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-27 00:58:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2018-10-27 00:58:12,451 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 43 [2018-10-27 00:58:12,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:12,452 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2018-10-27 00:58:12,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:58:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2018-10-27 00:58:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-27 00:58:12,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:12,453 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:12,453 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:12,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 141576777, now seen corresponding path program 1 times [2018-10-27 00:58:12,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:58:12,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:12,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:12,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:12,454 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:58:12,467 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-27 00:58:12,467 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-27 00:58:12,467 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-27 00:58:12,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:12,479 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-27 00:58:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:12,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-10-27 00:58:12,530 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [10], [12], [14], [18], [21], [29], [31], [34], [35], [46], [50], [53], [68], [70], [71], [75], [78], [80], [82], [86], [87], [88], [89], [91], [92], [93], [94], [95], [96], [97], [98] [2018-10-27 00:58:12,531 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:58:12,532 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:58:12,778 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:58:12,779 INFO L272 AbstractInterpreter]: Visited 20 different actions 94 times. Merged at 7 different actions 48 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 40 variables. [2018-10-27 00:58:12,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:12,794 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:58:12,892 INFO L227 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 81.22% of their original sizes. [2018-10-27 00:58:12,894 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:58:13,733 INFO L415 sIntCurrentIteration]: We unified 45 AI predicates to 45 [2018-10-27 00:58:13,733 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:58:13,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:13,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-27 00:58:13,734 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:58:13,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 00:58:13,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 00:58:13,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 00:58:13,735 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 11 states. [2018-10-27 00:58:14,696 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:58:15,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:15,939 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2018-10-27 00:58:15,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:58:15,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2018-10-27 00:58:15,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:15,940 INFO L225 Difference]: With dead ends: 62 [2018-10-27 00:58:15,941 INFO L226 Difference]: Without dead ends: 42 [2018-10-27 00:58:15,941 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-10-27 00:58:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-27 00:58:15,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-10-27 00:58:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-27 00:58:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-10-27 00:58:15,951 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 46 [2018-10-27 00:58:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:15,951 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-10-27 00:58:15,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 00:58:15,951 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-10-27 00:58:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-27 00:58:15,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:15,952 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:15,953 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:15,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1351012478, now seen corresponding path program 1 times [2018-10-27 00:58:15,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:58:15,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:15,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:15,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:58:15,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:58:15,999 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-27 00:58:15,999 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-27 00:58:15,999 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-27 00:58:16,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:16,010 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-27 00:58:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:16,058 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 59 with the following transitions: [2018-10-27 00:58:16,059 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [10], [12], [14], [18], [21], [29], [31], [34], [35], [46], [50], [53], [55], [60], [62], [68], [70], [71], [75], [78], [80], [82], [86], [87], [88], [89], [91], [92], [93], [94], [95], [96], [97], [98] [2018-10-27 00:58:16,060 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:58:16,060 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:58:16,168 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:58:16,295 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java: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: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.interval.IntervalDomainValue.(IntervalDomainValue.java:95) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.interval.IntervalDomainValue.inverseLessOrEqual(IntervalDomainValue.java:1663) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.interval.IntervalDomainValue.inverseLessOrEqual(IntervalDomainValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.inverseEvaluate(BinaryExpressionEvaluator.java:397) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.inverseEvaluate(BinaryExpressionEvaluator.java:302) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:374) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.projectAssumeOnIntervals(OctAssumeProcessor.java:563) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processNumericRelationWithoutIfs(OctAssumeProcessor.java:347) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processNumericRelation(OctAssumeProcessor.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processBooleanOperations(OctAssumeProcessor.java:168) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.assume(OctAssumeProcessor.java:98) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.IfExpressionTree.assumeLeafs(IfExpressionTree.java:315) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processNumericRelation(OctAssumeProcessor.java:304) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.processBooleanOperations(OctAssumeProcessor.java:168) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctAssumeProcessor.assume(OctAssumeProcessor.java:98) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctStatementProcessor.processStatement(OctStatementProcessor.java:68) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctPostOperator.apply(OctPostOperator.java:202) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.relational.octagon.OctPostOperator.apply(OctPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:334) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:530) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:334) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-10-27 00:58:16,300 INFO L168 Benchmark]: Toolchain (without parser) took 8516.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 960.7 MB in the beginning and 955.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 271.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:16,313 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:16,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:16,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:16,315 INFO L168 Benchmark]: Boogie Preprocessor took 24.26 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:16,315 INFO L168 Benchmark]: RCFGBuilder took 640.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:16,316 INFO L168 Benchmark]: TraceAbstraction took 7619.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 955.2 MB in the end (delta: 172.4 MB). Peak memory consumption was 286.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:16,319 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.26 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 640.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7619.57 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 955.2 MB in the end (delta: 172.4 MB). Peak memory consumption was 286.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.NullPointerException de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.NullPointerException: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:58:18,120 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:58:18,122 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:58:18,131 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:58:18,132 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:58:18,132 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:58:18,134 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:58:18,135 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:58:18,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:58:18,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:58:18,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:58:18,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:58:18,139 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:58:18,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:58:18,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:58:18,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:58:18,143 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:58:18,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:58:18,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:58:18,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:58:18,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:58:18,148 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:58:18,151 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:58:18,151 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:58:18,151 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:58:18,152 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:58:18,152 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:58:18,153 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:58:18,154 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:58:18,155 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:58:18,155 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:58:18,156 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:58:18,156 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:58:18,156 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:58:18,157 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:58:18,158 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:58:18,158 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-27 00:58:18,169 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:58:18,170 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:58:18,170 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:58:18,170 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:58:18,170 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:58:18,171 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:58:18,171 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:58:18,171 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:58:18,171 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 00:58:18,172 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 00:58:18,173 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:58:18,173 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:58:18,173 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:58:18,173 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:58:18,173 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:58:18,175 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:58:18,175 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:58:18,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:58:18,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:58:18,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:58:18,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:58:18,176 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-27 00:58:18,176 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:58:18,176 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 00:58:18,176 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 00:58:18,177 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_81156ec9-bf12-4a3a-bf81-bf8ff5871167/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 -> 279fae57395782089eff32ec1396d1726d808c7f [2018-10-27 00:58:18,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:58:18,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:58:18,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:58:18,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:58:18,224 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:58:18,225 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-10-27 00:58:18,268 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/c539133d8/070e08caf0064894b7260ec9c538bd2f/FLAG439b6b445 [2018-10-27 00:58:18,649 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:58:18,650 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/sv-benchmarks/c/reducercommutativity/rangesum_false-unreach-call_true-termination.i [2018-10-27 00:58:18,655 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/c539133d8/070e08caf0064894b7260ec9c538bd2f/FLAG439b6b445 [2018-10-27 00:58:18,670 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/data/c539133d8/070e08caf0064894b7260ec9c538bd2f [2018-10-27 00:58:18,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:58:18,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:58:18,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:18,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:58:18,678 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:58:18,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c416fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18, skipping insertion in model container [2018-10-27 00:58:18,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:58:18,714 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:58:18,882 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:18,896 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:58:18,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:58:18,945 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:58:18,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18 WrapperNode [2018-10-27 00:58:18,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:58:18,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:18,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:58:18,947 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:58:18,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:58:18,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:58:18,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:58:18,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:58:18,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:18,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:19,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:19,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:19,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... [2018-10-27 00:58:19,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:58:19,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:58:19,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:58:19,030 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:58:19,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/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 [2018-10-27 00:58:19,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:58:19,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:58:19,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:58:19,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:58:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:58:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:58:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-10-27 00:58:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-10-27 00:58:19,150 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-10-27 00:58:19,150 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-10-27 00:58:20,014 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:58:20,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:20 BoogieIcfgContainer [2018-10-27 00:58:20,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:58:20,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:58:20,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:58:20,019 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:58:20,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:58:18" (1/3) ... [2018-10-27 00:58:20,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b863445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:20, skipping insertion in model container [2018-10-27 00:58:20,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:58:18" (2/3) ... [2018-10-27 00:58:20,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b863445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:58:20, skipping insertion in model container [2018-10-27 00:58:20,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:20" (3/3) ... [2018-10-27 00:58:20,023 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum_false-unreach-call_true-termination.i [2018-10-27 00:58:20,032 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:58:20,039 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:58:20,052 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:58:20,077 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:58:20,078 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:58:20,078 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:58:20,078 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:58:20,078 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:58:20,078 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:58:20,078 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:58:20,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:58:20,079 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:58:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-27 00:58:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 00:58:20,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:20,099 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:20,101 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:20,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:20,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1453479608, now seen corresponding path program 1 times [2018-10-27 00:58:20,109 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:20,109 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:20,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:20,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-27 00:58:20,221 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-10-27 00:58:20,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:20,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 00:58:20,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 00:58:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 00:58:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 00:58:20,246 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-10-27 00:58:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:20,264 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2018-10-27 00:58:20,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 00:58:20,265 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2018-10-27 00:58:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:20,271 INFO L225 Difference]: With dead ends: 72 [2018-10-27 00:58:20,271 INFO L226 Difference]: Without dead ends: 36 [2018-10-27 00:58:20,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 00:58:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-27 00:58:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-27 00:58:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-27 00:58:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-10-27 00:58:20,310 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 38 [2018-10-27 00:58:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:20,310 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-10-27 00:58:20,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 00:58:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-10-27 00:58:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 00:58:20,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:20,313 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:20,313 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:20,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash -538232150, now seen corresponding path program 1 times [2018-10-27 00:58:20,315 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:20,315 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:20,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:20,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-27 00:58:20,475 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:58:20,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:20,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:58:20,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:58:20,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:58:20,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:20,481 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2018-10-27 00:58:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:20,625 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2018-10-27 00:58:20,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:58:20,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-10-27 00:58:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:20,629 INFO L225 Difference]: With dead ends: 63 [2018-10-27 00:58:20,629 INFO L226 Difference]: Without dead ends: 43 [2018-10-27 00:58:20,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:58:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-27 00:58:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-10-27 00:58:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-27 00:58:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-10-27 00:58:20,638 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 43 [2018-10-27 00:58:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:20,638 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-10-27 00:58:20,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:58:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-10-27 00:58:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 00:58:20,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:20,640 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:20,640 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:20,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1233502645, now seen corresponding path program 1 times [2018-10-27 00:58:20,641 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:20,641 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:20,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:20,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 00:58:20,820 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (4)] Exception during sending of exit command (exit): Broken pipe [2018-10-27 00:58:20,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:58:20,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:58:20,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:58:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:58:20,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:58:20,831 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2018-10-27 00:58:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:21,150 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2018-10-27 00:58:21,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:58:21,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-27 00:58:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:21,154 INFO L225 Difference]: With dead ends: 73 [2018-10-27 00:58:21,154 INFO L226 Difference]: Without dead ends: 44 [2018-10-27 00:58:21,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:58:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-27 00:58:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-10-27 00:58:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-27 00:58:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-10-27 00:58:21,168 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 43 [2018-10-27 00:58:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:21,168 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-10-27 00:58:21,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:58:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-10-27 00:58:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-27 00:58:21,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:21,170 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:21,170 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:21,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash -553693718, now seen corresponding path program 1 times [2018-10-27 00:58:21,171 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:21,171 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:21,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:21,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 00:58:21,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:58:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 00:58:21,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:58:21,467 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:58:21,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:21,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 00:58:21,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:58:22,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:58:22,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 6] total 15 [2018-10-27 00:58:22,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 00:58:22,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 00:58:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-10-27 00:58:22,009 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 15 states. [2018-10-27 00:58:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:22,736 INFO L93 Difference]: Finished difference Result 102 states and 126 transitions. [2018-10-27 00:58:22,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 00:58:22,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-10-27 00:58:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:22,737 INFO L225 Difference]: With dead ends: 102 [2018-10-27 00:58:22,738 INFO L226 Difference]: Without dead ends: 71 [2018-10-27 00:58:22,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2018-10-27 00:58:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-27 00:58:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2018-10-27 00:58:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-27 00:58:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-10-27 00:58:22,752 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 46 [2018-10-27 00:58:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:22,752 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-10-27 00:58:22,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 00:58:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-10-27 00:58:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-27 00:58:22,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:22,755 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:22,755 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:22,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash -973670379, now seen corresponding path program 1 times [2018-10-27 00:58:22,756 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:22,756 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:22,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:23,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-27 00:58:23,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:58:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 00:58:23,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:58:23,455 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:58:23,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:23,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-27 00:58:23,738 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:58:23,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:58:23,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 12 [2018-10-27 00:58:23,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 00:58:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 00:58:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-27 00:58:23,760 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 12 states. [2018-10-27 00:58:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:24,278 INFO L93 Difference]: Finished difference Result 127 states and 177 transitions. [2018-10-27 00:58:24,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 00:58:24,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2018-10-27 00:58:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:24,291 INFO L225 Difference]: With dead ends: 127 [2018-10-27 00:58:24,291 INFO L226 Difference]: Without dead ends: 66 [2018-10-27 00:58:24,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-10-27 00:58:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-27 00:58:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-10-27 00:58:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-27 00:58:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2018-10-27 00:58:24,311 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 53 [2018-10-27 00:58:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:24,311 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2018-10-27 00:58:24,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 00:58:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2018-10-27 00:58:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-27 00:58:24,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:24,314 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:24,314 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:24,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:24,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1315666265, now seen corresponding path program 1 times [2018-10-27 00:58:24,315 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:24,315 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:24,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:25,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 54 proven. 23 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-27 00:58:25,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:58:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-27 00:58:26,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:58:26,192 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:58:26,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:58:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:58:26,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-27 00:58:26,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:58:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-27 00:58:28,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-27 00:58:28,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 5, 6] total 27 [2018-10-27 00:58:28,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-27 00:58:28,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-27 00:58:28,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2018-10-27 00:58:28,064 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand 27 states. [2018-10-27 00:58:29,344 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-27 00:58:29,758 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-27 00:58:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:30,224 INFO L93 Difference]: Finished difference Result 162 states and 223 transitions. [2018-10-27 00:58:30,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 00:58:30,225 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 76 [2018-10-27 00:58:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:30,226 INFO L225 Difference]: With dead ends: 162 [2018-10-27 00:58:30,227 INFO L226 Difference]: Without dead ends: 121 [2018-10-27 00:58:30,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 273 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2018-10-27 00:58:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-27 00:58:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2018-10-27 00:58:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-27 00:58:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2018-10-27 00:58:30,247 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 76 [2018-10-27 00:58:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:30,247 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2018-10-27 00:58:30,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-27 00:58:30,247 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2018-10-27 00:58:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-27 00:58:30,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:30,251 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:30,251 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:30,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:30,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1231551854, now seen corresponding path program 2 times [2018-10-27 00:58:30,251 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:30,252 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:30,284 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-27 00:58:31,876 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-27 00:58:31,877 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:58:32,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 108 proven. 15 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-27 00:58:32,699 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:58:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-10-27 00:58:32,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:58:32,943 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:58:32,949 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 00:58:34,140 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-27 00:58:34,140 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 00:58:34,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:58:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 108 proven. 15 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-27 00:58:34,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:58:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 114 proven. 25 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-27 00:58:36,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-27 00:58:36,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10, 14] total 23 [2018-10-27 00:58:36,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 00:58:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 00:58:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-10-27 00:58:36,717 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 23 states. [2018-10-27 00:58:37,779 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-27 00:58:38,487 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-10-27 00:58:38,994 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-27 00:58:39,350 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-27 00:58:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:58:40,476 INFO L93 Difference]: Finished difference Result 202 states and 255 transitions. [2018-10-27 00:58:40,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 00:58:40,482 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2018-10-27 00:58:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:58:40,483 INFO L225 Difference]: With dead ends: 202 [2018-10-27 00:58:40,484 INFO L226 Difference]: Without dead ends: 134 [2018-10-27 00:58:40,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 321 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2018-10-27 00:58:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-27 00:58:40,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2018-10-27 00:58:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-27 00:58:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-10-27 00:58:40,505 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 88 [2018-10-27 00:58:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:58:40,506 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-10-27 00:58:40,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 00:58:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-10-27 00:58:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-27 00:58:40,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:58:40,508 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:58:40,509 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:58:40,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:58:40,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1649796690, now seen corresponding path program 1 times [2018-10-27 00:58:40,511 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:58:40,511 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:58:40,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 00:58:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:58:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 00:58:44,737 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 00:58:44,754 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,756 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,758 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,758 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,759 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,759 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,761 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,769 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,770 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,771 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,771 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,771 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,771 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,771 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,772 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,772 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,772 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,772 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,772 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,773 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,773 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,773 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,781 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,782 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,782 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,782 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,782 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,783 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,783 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,783 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,784 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,785 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,785 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,785 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,788 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,788 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,788 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,788 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:58:44 BoogieIcfgContainer [2018-10-27 00:58:44,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:58:44,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 00:58:44,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 00:58:44,832 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 00:58:44,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:58:20" (3/4) ... [2018-10-27 00:58:44,836 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 00:58:44,838 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,838 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,839 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,839 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,839 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,839 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,840 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,841 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,845 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,845 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,845 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,845 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,846 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,846 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,846 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,846 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,848 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,849 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,850 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,850 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,850 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,851 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,851 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,851 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,851 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,851 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,851 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-27 00:58:44,933 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_81156ec9-bf12-4a3a-bf81-bf8ff5871167/bin-2019/utaipan/witness.graphml [2018-10-27 00:58:44,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 00:58:44,938 INFO L168 Benchmark]: Toolchain (without parser) took 26265.47 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 289.4 MB). Free memory was 953.2 MB in the beginning and 1.2 GB in the end (delta: -286.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:44,940 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-10-27 00:58:44,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.52 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:44,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.24 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:44,941 INFO L168 Benchmark]: Boogie Preprocessor took 42.95 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:58:44,941 INFO L168 Benchmark]: RCFGBuilder took 984.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -149.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:44,941 INFO L168 Benchmark]: TraceAbstraction took 24815.66 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 168.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -162.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:44,942 INFO L168 Benchmark]: Witness Printer took 105.80 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 11.5 GB. [2018-10-27 00:58:44,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.52 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 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 40.24 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.95 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 984.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -149.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24815.66 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 168.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -162.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Witness Printer took 105.80 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. 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 - 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 - 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 - 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: - CounterExampleResult [Line: 53]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int N; VAL [\old(N)=0, N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] CALL int x[N]; [L34] RET int x[N]; [L35] CALL init_nondet(x) VAL [\old(N)=0, N=3] [L6] int i; [L7] i = 0 VAL [\old(N)=0, N=3] [L7] COND TRUE i < N [L8] CALL x[i] = __VERIFIER_nondet_int() [L8] RET x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [\old(N)=0, N=3] [L7] COND TRUE i < N [L8] CALL x[i] = __VERIFIER_nondet_int() [L8] RET x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [\old(N)=0, N=3] [L7] COND TRUE i < N [L8] CALL x[i] = __VERIFIER_nondet_int() [L8] RET x[i] = __VERIFIER_nondet_int() [L7] i++ VAL [\old(N)=0, N=3] [L7] COND FALSE, RET !(i < N) VAL [\old(N)=0, N=3] [L35] init_nondet(x) VAL [\old(N)=0, N=3] [L36] int temp; [L37] int ret; [L38] int ret2; [L39] int ret5; VAL [\old(N)=0, N=3] [L41] CALL, EXPR rangesum(x) VAL [\old(N)=0, N=3] [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND TRUE i > N/2 [L20] CALL, EXPR x[i] [L20] RET, EXPR x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND FALSE !(i < N) VAL [\old(N)=0, N=3] [L24] COND TRUE cnt !=0 [L25] RET return ret / cnt; VAL [\old(N)=0, N=3] [L41] EXPR rangesum(x) VAL [\old(N)=0, N=3] [L41] ret = rangesum(x) [L43] CALL, EXPR x[0] [L43] RET, EXPR x[0] [L43] temp=x[0] [L43] CALL, EXPR x[1] [L43] RET, EXPR x[1] [L43] CALL x[0] = x[1] [L43] RET x[0] = x[1] [L43] CALL x[1] = temp [L43] RET x[1] = temp [L44] CALL, EXPR rangesum(x) VAL [\old(N)=0, N=3] [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND TRUE i > N/2 [L20] CALL, EXPR x[i] [L20] RET, EXPR x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND FALSE !(i < N) VAL [\old(N)=0, N=3] [L24] COND TRUE cnt !=0 [L25] RET return ret / cnt; VAL [\old(N)=0, N=3] [L44] EXPR rangesum(x) VAL [\old(N)=0, N=3] [L44] ret2 = rangesum(x) [L45] CALL, EXPR x[0] [L45] RET, EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [\old(N)=0, N=3] [L46] COND TRUE i N/2) VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND FALSE !(i > N/2) VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND TRUE i < N VAL [\old(N)=0, N=3] [L19] COND TRUE i > N/2 [L20] CALL, EXPR x[i] [L20] RET, EXPR x[i] [L20] ret = ret + x[i] [L21] cnt = cnt + 1 VAL [\old(N)=0, N=3] [L18] i++ VAL [\old(N)=0, N=3] [L18] COND FALSE !(i < N) VAL [\old(N)=0, N=3] [L24] COND TRUE cnt !=0 [L25] RET return ret / cnt; VAL [\old(N)=0, N=3] [L50] EXPR rangesum(x) VAL [\old(N)=0, N=3] [L50] ret5 = rangesum(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [\old(N)=0, N=3] [L53] __VERIFIER_error() VAL [\old(N)=0, N=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. UNSAFE Result, 24.7s OverallTime, 8 OverallIterations, 12 TraceHistogramMax, 7.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 282 SDtfs, 728 SDslu, 881 SDs, 0 SdLazy, 1246 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1093 GetRequests, 977 SyntacticMatches, 19 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=7, 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 34 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1060 ConstructedInterpolants, 0 QuantifiedInterpolants, 259316 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1744 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1383/1644 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...