./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u_true-unreach-call.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_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-2-n-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/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 2d061e21feb7b93498697cb3c2b0c234bfc57f86 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:58:04,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:58:04,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:58:04,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:58:04,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:58:04,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:58:04,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:58:04,157 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:58:04,159 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:58:04,160 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:58:04,160 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:58:04,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:58:04,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:58:04,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:58:04,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:58:04,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:58:04,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:58:04,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:58:04,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:58:04,169 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:58:04,170 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:58:04,171 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:58:04,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:58:04,173 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:58:04,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:58:04,175 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:58:04,175 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:58:04,176 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:58:04,177 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:58:04,178 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:58:04,178 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:58:04,179 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:58:04,179 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:58:04,179 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:58:04,180 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:58:04,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:58:04,181 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:58:04,192 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:58:04,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:58:04,193 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:58:04,193 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:58:04,196 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:58:04,197 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:58:04,197 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:58:04,197 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:58:04,197 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:58:04,197 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:58:04,197 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:58:04,198 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:58:04,198 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:58:04,198 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:58:04,198 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:58:04,199 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:58:04,200 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:58:04,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:58:04,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:58:04,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:58:04,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:58:04,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:58:04,200 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:58:04,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:58:04,201 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:58:04,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:58:04,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:58:04,201 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:58:04,201 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_74d4dc97-b6da-4843-acad-878b8ee0c172/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 -> 2d061e21feb7b93498697cb3c2b0c234bfc57f86 [2018-10-26 23:58:04,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:58:04,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:58:04,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:58:04,257 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:58:04,257 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:58:04,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/rev-2-n-u_true-unreach-call.i [2018-10-26 23:58:04,308 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/data/7365321d0/d1a50101ad6040589cbb8c4c3f1ad981/FLAG5e65e187a [2018-10-26 23:58:04,698 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:58:04,699 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/sv-benchmarks/c/array-multidimensional/rev-2-n-u_true-unreach-call.i [2018-10-26 23:58:04,705 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/data/7365321d0/d1a50101ad6040589cbb8c4c3f1ad981/FLAG5e65e187a [2018-10-26 23:58:04,717 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/data/7365321d0/d1a50101ad6040589cbb8c4c3f1ad981 [2018-10-26 23:58:04,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:58:04,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:58:04,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:58:04,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:58:04,726 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:58:04,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255b6356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04, skipping insertion in model container [2018-10-26 23:58:04,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:58:04,754 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:58:04,900 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:58:04,903 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:58:04,923 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:58:04,939 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:58:04,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04 WrapperNode [2018-10-26 23:58:04,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:58:04,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:58:04,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:58:04,940 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:58:04,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:58:04,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:58:04,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:58:04,968 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:58:04,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... [2018-10-26 23:58:04,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:58:04,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:58:04,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:58:04,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:58:04,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:58:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:58:05,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:58:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:58:05,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:58:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:58:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:58:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 23:58:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 23:58:05,488 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:58:05,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:05 BoogieIcfgContainer [2018-10-26 23:58:05,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:58:05,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:58:05,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:58:05,492 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:58:05,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:58:04" (1/3) ... [2018-10-26 23:58:05,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf0f290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:58:05, skipping insertion in model container [2018-10-26 23:58:05,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:58:04" (2/3) ... [2018-10-26 23:58:05,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf0f290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:58:05, skipping insertion in model container [2018-10-26 23:58:05,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:05" (3/3) ... [2018-10-26 23:58:05,496 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-2-n-u_true-unreach-call.i [2018-10-26 23:58:05,505 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:58:05,516 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:58:05,532 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:58:05,570 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:58:05,570 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:58:05,570 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:58:05,571 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:58:05,571 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:58:05,571 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:58:05,571 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:58:05,571 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:58:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-10-26 23:58:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 23:58:05,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:58:05,592 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:58:05,594 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:58:05,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:58:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash -439935169, now seen corresponding path program 1 times [2018-10-26 23:58:05,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:58:05,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:05,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:05,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:05,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:58:05,667 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:58:05,667 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:58:05,667 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:58:05,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:05,685 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:58:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:58:05,725 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-26 23:58:05,727 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 23:58:05,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:58:05,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:58:05,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:05,733 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 23:58:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:58:05,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:58:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:58:05,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:58:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:58:05,827 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:58:05,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-10-26 23:58:05,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:58:05,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:58:05,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:58:05,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:58:05,841 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-10-26 23:58:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:58:05,862 INFO L93 Difference]: Finished difference Result 66 states and 91 transitions. [2018-10-26 23:58:05,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:58:05,863 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-10-26 23:58:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:58:05,871 INFO L225 Difference]: With dead ends: 66 [2018-10-26 23:58:05,871 INFO L226 Difference]: Without dead ends: 31 [2018-10-26 23:58:05,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:58:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-26 23:58:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-26 23:58:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-26 23:58:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2018-10-26 23:58:05,909 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2018-10-26 23:58:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:58:05,910 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2018-10-26 23:58:05,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:58:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2018-10-26 23:58:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 23:58:05,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:58:05,911 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:58:05,912 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:58:05,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:58:05,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1117238025, now seen corresponding path program 1 times [2018-10-26 23:58:05,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:58:05,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:05,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:05,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:05,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:58:05,921 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:58:05,921 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:58:05,921 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 23:58:05,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:05,938 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:58:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:58:05,999 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-26 23:58:05,999 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 23:58:05,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:58:05,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 23:58:06,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:06,013 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:58:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:58:06,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:58:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:58:06,166 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:58:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:58:06,248 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:58:06,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-10-26 23:58:06,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:58:06,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:58:06,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:58:06,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:58:06,250 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 3 states. [2018-10-26 23:58:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:58:06,392 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-10-26 23:58:06,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:58:06,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-26 23:58:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:58:06,394 INFO L225 Difference]: With dead ends: 56 [2018-10-26 23:58:06,394 INFO L226 Difference]: Without dead ends: 36 [2018-10-26 23:58:06,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:58:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-26 23:58:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-10-26 23:58:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 23:58:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-10-26 23:58:06,400 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 20 [2018-10-26 23:58:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:58:06,400 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-10-26 23:58:06,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:58:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2018-10-26 23:58:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 23:58:06,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:58:06,402 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:58:06,402 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:58:06,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:58:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1388242926, now seen corresponding path program 1 times [2018-10-26 23:58:06,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:58:06,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:06,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:06,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:58:06,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:58:06,408 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 23:58:06,409 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 23:58:06,409 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 23:58:06,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:58:06,421 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 23:58:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:58:06,476 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-10-26 23:58:06,478 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [29], [33], [37], [41], [61], [65], [71], [75], [81], [93], [96], [98], [104], [105], [106], [108] [2018-10-26 23:58:06,529 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:58:06,529 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:58:06,715 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:58:06,716 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 30 variables. [2018-10-26 23:58:06,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:58:06,734 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:58:06,839 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 75% of their original sizes. [2018-10-26 23:58:06,840 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:58:06,942 INFO L415 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2018-10-26 23:58:06,942 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:58:06,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:58:06,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:58:06,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:58:06,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:58:06,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:58:06,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:58:06,944 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2018-10-26 23:58:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:58:06,996 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-26 23:58:06,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:58:06,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-26 23:58:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:58:06,997 INFO L225 Difference]: With dead ends: 35 [2018-10-26 23:58:06,997 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 23:58:06,998 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:58:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 23:58:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 23:58:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 23:58:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 23:58:06,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-10-26 23:58:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:58:06,999 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 23:58:06,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:58:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 23:58:06,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:58:07,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 23:58:07,152 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-10-26 23:58:08,312 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2018-10-26 23:58:08,575 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 32 [2018-10-26 23:58:08,577 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:58:08,577 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:58:08,577 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:58:08,577 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:58:08,578 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 23:58:08,578 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:58:08,578 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:58:08,578 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 63) no Hoare annotation was computed. [2018-10-26 23:58:08,578 INFO L421 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: false [2018-10-26 23:58:08,578 INFO L425 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2018-10-26 23:58:08,578 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 23 31) no Hoare annotation was computed. [2018-10-26 23:58:08,579 INFO L421 ceAbstractionStarter]: At program point L23-3(lines 23 31) the Hoare annotation is: (and (<= (+ |main_~#B~0.offset| main_~m~0) 1000) (<= 3000 (* 2 main_~n~0)) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= (* 2 |main_~#A~0.offset|) 0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= 0 (+ main_~j~0 |main_~#B~0.offset|)) (<= 1000 main_~m~0) (= main_~i~0 0)) [2018-10-26 23:58:08,579 INFO L425 ceAbstractionStarter]: For program point L23-4(lines 23 31) no Hoare annotation was computed. [2018-10-26 23:58:08,579 INFO L425 ceAbstractionStarter]: For program point L52-1(lines 52 61) no Hoare annotation was computed. [2018-10-26 23:58:08,579 INFO L421 ceAbstractionStarter]: At program point L52-3(lines 52 61) the Hoare annotation is: false [2018-10-26 23:58:08,579 INFO L425 ceAbstractionStarter]: For program point L52-4(lines 52 61) no Hoare annotation was computed. [2018-10-26 23:58:08,579 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 45) no Hoare annotation was computed. [2018-10-26 23:58:08,579 INFO L421 ceAbstractionStarter]: At program point L36-3(lines 36 45) the Hoare annotation is: false [2018-10-26 23:58:08,579 INFO L425 ceAbstractionStarter]: For program point L36-4(lines 36 45) no Hoare annotation was computed. [2018-10-26 23:58:08,579 INFO L425 ceAbstractionStarter]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2018-10-26 23:58:08,580 INFO L421 ceAbstractionStarter]: At program point L25-3(lines 25 29) the Hoare annotation is: (and (<= (+ |main_~#B~0.offset| main_~m~0) 1000) (<= 3000 (* 2 main_~n~0)) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= (* 2 |main_~#A~0.offset|) 0) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= 0 (+ main_~j~0 |main_~#B~0.offset|)) (<= 1000 (+ main_~i~0 main_~m~0)) (= main_~i~0 0)) [2018-10-26 23:58:08,580 INFO L425 ceAbstractionStarter]: For program point L25-4(lines 25 29) no Hoare annotation was computed. [2018-10-26 23:58:08,580 INFO L425 ceAbstractionStarter]: For program point L54-1(lines 54 59) no Hoare annotation was computed. [2018-10-26 23:58:08,580 INFO L421 ceAbstractionStarter]: At program point L54-3(lines 54 59) the Hoare annotation is: false [2018-10-26 23:58:08,580 INFO L425 ceAbstractionStarter]: For program point L54-4(lines 54 59) no Hoare annotation was computed. [2018-10-26 23:58:08,580 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 63) no Hoare annotation was computed. [2018-10-26 23:58:08,580 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 43) no Hoare annotation was computed. [2018-10-26 23:58:08,580 INFO L421 ceAbstractionStarter]: At program point L38-3(lines 38 43) the Hoare annotation is: false [2018-10-26 23:58:08,581 INFO L425 ceAbstractionStarter]: For program point L38-4(lines 38 43) no Hoare annotation was computed. [2018-10-26 23:58:08,581 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 63) the Hoare annotation is: true [2018-10-26 23:58:08,581 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-26 23:58:08,581 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 23:58:08,581 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:58:08,581 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 23:58:08,581 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 23:58:08,581 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:58:08,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:58:08 BoogieIcfgContainer [2018-10-26 23:58:08,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:58:08,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:58:08,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:58:08,605 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:58:08,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:58:05" (3/4) ... [2018-10-26 23:58:08,608 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 23:58:08,613 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 23:58:08,614 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 23:58:08,615 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 23:58:08,619 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2018-10-26 23:58:08,619 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-10-26 23:58:08,619 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 23:58:08,665 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_74d4dc97-b6da-4843-acad-878b8ee0c172/bin-2019/utaipan/witness.graphml [2018-10-26 23:58:08,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:58:08,666 INFO L168 Benchmark]: Toolchain (without parser) took 3945.40 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 233.3 MB). Free memory was 961.2 MB in the beginning and 1.2 GB in the end (delta: -262.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:58:08,666 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:58:08,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.66 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:08,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:08,667 INFO L168 Benchmark]: Boogie Preprocessor took 23.29 ms. Allocated memory is still 1.0 GB. Free memory is still 947.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:58:08,668 INFO L168 Benchmark]: RCFGBuilder took 497.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.8 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -203.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:08,668 INFO L168 Benchmark]: TraceAbstraction took 3115.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 54.5 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -72.2 MB). Peak memory consumption was 306.3 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:08,668 INFO L168 Benchmark]: Witness Printer took 60.08 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:58:08,670 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 217.66 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 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 27.92 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.29 ms. Allocated memory is still 1.0 GB. Free memory is still 947.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 497.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.8 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -203.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3115.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 54.5 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -72.2 MB). Peak memory consumption was 306.3 MB. Max. memory is 11.5 GB. * Witness Printer took 60.08 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((((((B + m <= 1000 && 3000 <= 2 * n) && !(A == 0)) && !(B == 0)) && j + n <= 1500) && 2 * A <= 0) && 0 <= j + A) && 0 <= j + B) && 1000 <= i + m) && i == 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((B + m <= 1000 && 3000 <= 2 * n) && !(A == 0)) && !(B == 0)) && j + n <= 1500) && 2 * A <= 0) && 0 <= j + A) && 0 <= j + B) && 1000 <= m) && i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 1.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 6 SDslu, 27 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9708333333333333 AbsIntWeakeningRatio, 1.25 AbsIntAvgWeakeningVarsNumRemoved, 63.041666666666664 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 14 PreInvPairs, 16 NumberOfFragments, 102 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 640 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 1604 SizeOfPredicates, 2 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...