./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/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 d8b7d2eba04d5104e6e025f54a673b137a0acc7a ........................................................................................................................................................................................................................................................................................................................................................................................ 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_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/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 d8b7d2eba04d5104e6e025f54a673b137a0acc7a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:56:29,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:56:29,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:56:29,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:56:29,625 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:56:29,626 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:56:29,629 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:56:29,630 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:56:29,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:56:29,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:56:29,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:56:29,637 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:56:29,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:56:29,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:56:29,647 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:56:29,648 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:56:29,648 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:56:29,650 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:56:29,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:56:29,654 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:56:29,655 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:56:29,656 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:56:29,658 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:56:29,658 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:56:29,658 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:56:29,658 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:56:29,662 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:56:29,663 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:56:29,665 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:56:29,666 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:56:29,667 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:56:29,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:56:29,668 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:56:29,668 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:56:29,669 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:56:29,669 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:56:29,670 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:56:29,682 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:56:29,682 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:56:29,682 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:56:29,683 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:56:29,683 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:56:29,683 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:56:29,683 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:56:29,683 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:56:29,684 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:56:29,684 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:56:29,684 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:56:29,684 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:56:29,685 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:56:29,686 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:56:29,686 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:56:29,686 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:56:29,686 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:56:29,686 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:56:29,686 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:56:29,686 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:56:29,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:56:29,689 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:56:29,689 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:56:29,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:56:29,689 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:56:29,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:56:29,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:56:29,690 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:56:29,690 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_13c006af-a719-4696-b297-0eebcbf3925f/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 -> d8b7d2eba04d5104e6e025f54a673b137a0acc7a [2018-10-26 20:56:29,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:56:29,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:56:29,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:56:29,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:56:29,732 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:56:29,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c [2018-10-26 20:56:29,786 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/2cbfdf2d9/7aed1ba754af4770999eb706dcf5b53a/FLAGc98c1cff3 [2018-10-26 20:56:30,118 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:56:30,118 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c [2018-10-26 20:56:30,127 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/2cbfdf2d9/7aed1ba754af4770999eb706dcf5b53a/FLAGc98c1cff3 [2018-10-26 20:56:30,142 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/2cbfdf2d9/7aed1ba754af4770999eb706dcf5b53a [2018-10-26 20:56:30,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:56:30,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:56:30,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:56:30,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:56:30,149 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:56:30,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d51faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30, skipping insertion in model container [2018-10-26 20:56:30,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:56:30,174 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:56:30,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:56:30,298 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:56:30,315 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:56:30,328 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:56:30,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30 WrapperNode [2018-10-26 20:56:30,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:56:30,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:56:30,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:56:30,330 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:56:30,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:56:30,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:56:30,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:56:30,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:56:30,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... [2018-10-26 20:56:30,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:56:30,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:56:30,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:56:30,408 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:56:30,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:56:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:56:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:56:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:56:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:56:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:56:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:56:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:56:30,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:56:31,094 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:56:31,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:56:31 BoogieIcfgContainer [2018-10-26 20:56:31,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:56:31,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:56:31,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:56:31,098 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:56:31,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:56:30" (1/3) ... [2018-10-26 20:56:31,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87167fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:56:31, skipping insertion in model container [2018-10-26 20:56:31,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:30" (2/3) ... [2018-10-26 20:56:31,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87167fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:56:31, skipping insertion in model container [2018-10-26 20:56:31,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:56:31" (3/3) ... [2018-10-26 20:56:31,102 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation_true-unreach-call_true-termination.c [2018-10-26 20:56:31,108 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:56:31,114 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:56:31,127 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:56:31,151 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:56:31,152 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:56:31,152 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:56:31,152 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:56:31,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:56:31,152 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:56:31,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:56:31,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:56:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-26 20:56:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 20:56:31,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:56:31,173 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:56:31,175 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:56:31,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:56:31,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1517004206, now seen corresponding path program 1 times [2018-10-26 20:56:31,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:56:31,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:56:31,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:56:31,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:56:31,218 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:56:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:56:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:56:31,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:56:31,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:56:31,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:56:31,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:56:31,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:56:31,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:56:31,334 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-26 20:56:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:56:31,353 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-10-26 20:56:31,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:56:31,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-26 20:56:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:56:31,362 INFO L225 Difference]: With dead ends: 38 [2018-10-26 20:56:31,362 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 20:56:31,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:56:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 20:56:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 20:56:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 20:56:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-10-26 20:56:31,390 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2018-10-26 20:56:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:56:31,390 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-10-26 20:56:31,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:56:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-10-26 20:56:31,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:56:31,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:56:31,391 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:56:31,392 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:56:31,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:56:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash -146941417, now seen corresponding path program 1 times [2018-10-26 20:56:31,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:56:31,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:56:31,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:56:31,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:56:31,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:56:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:56:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:56:31,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:56:31,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:56:31,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:56:31,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:56:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:56:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:56:31,466 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-10-26 20:56:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:56:31,519 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-10-26 20:56:31,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:56:31,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-26 20:56:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:56:31,522 INFO L225 Difference]: With dead ends: 30 [2018-10-26 20:56:31,522 INFO L226 Difference]: Without dead ends: 24 [2018-10-26 20:56:31,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:56:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-26 20:56:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-26 20:56:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 20:56:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 20:56:31,528 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2018-10-26 20:56:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:56:31,528 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 20:56:31,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:56:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 20:56:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 20:56:31,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:56:31,529 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:56:31,529 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:56:31,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:56:31,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1268654585, now seen corresponding path program 1 times [2018-10-26 20:56:31,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:56:31,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:56:31,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:56:31,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:56:31,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:56:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:56:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:56:31,607 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:56:31,618 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,620 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,620 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,620 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,621 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,621 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,621 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,621 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,622 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,622 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,622 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,623 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,623 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,623 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 20:56:31,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:56:31 BoogieIcfgContainer [2018-10-26 20:56:31,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:56:31,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:56:31,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:56:31,642 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:56:31,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:56:31" (3/4) ... [2018-10-26 20:56:31,646 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:56:31,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:56:31,647 INFO L168 Benchmark]: Toolchain (without parser) took 1502.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -133.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:56:31,649 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:56:31,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.15 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:56:31,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.60 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:56:31,650 INFO L168 Benchmark]: Boogie Preprocessor took 40.10 ms. Allocated memory is still 1.0 GB. Free memory was 941.0 MB in the beginning and 938.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:56:31,651 INFO L168 Benchmark]: RCFGBuilder took 687.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 938.3 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-10-26 20:56:31,651 INFO L168 Benchmark]: TraceAbstraction took 545.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:56:31,652 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:56:31,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.15 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.7 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 37.60 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.10 ms. Allocated memory is still 1.0 GB. Free memory was 941.0 MB in the beginning and 938.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 687.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 938.3 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 545.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of to_real at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L8] int i; [L9] float z, t; [L10] CALL float min[] = { 5, 10, 12, 30, 150 }; [L10] RET float min[] = { 5, 10, 12, 30, 150 }; [L10] RET float min[] = { 5, 10, 12, 30, 150 }; [L10] RET float min[] = { 5, 10, 12, 30, 150 }; [L10] RET float min[] = { 5, 10, 12, 30, 150 }; [L10] RET float min[] = { 5, 10, 12, 30, 150 }; [L10] RET float min[] = { 5, 10, 12, 30, 150 }; [L11] CALL float max[] = { 10, 12, 30, 150, 300 }; [L11] RET float max[] = { 10, 12, 30, 150, 300 }; [L11] RET float max[] = { 10, 12, 30, 150, 300 }; [L11] RET float max[] = { 10, 12, 30, 150, 300 }; [L11] RET float max[] = { 10, 12, 30, 150, 300 }; [L11] RET float max[] = { 10, 12, 30, 150, 300 }; [L11] RET float max[] = { 10, 12, 30, 150, 300 }; [L13] t = __VERIFIER_nondet_float() [L14] CALL, EXPR min[0] [L14] RET, EXPR min[0] [L14] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L14] CALL, EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L14] RET, EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L14] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L16] i = 0 [L16] COND TRUE i < sizeof(min) / sizeof(min[0]) [L17] CALL, EXPR max[i] [L17] RET, EXPR max[i] [L17] COND TRUE t <= max[i] [L19] CALL, EXPR min[i] [L19] RET, EXPR min[i] [L19] CALL, EXPR max[i] [L19] RET, EXPR max[i] [L19] CALL, EXPR min[i] [L19] RET, EXPR min[i] [L19] z = (t - min[i]) / (max[i] - min[i]) [L21] CALL __VERIFIER_assert(z >= 0.f && z <= 1.f) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 4 SDslu, 14 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:56:33,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:56:33,555 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:56:33,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:56:33,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:56:33,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:56:33,566 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:56:33,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:56:33,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:56:33,570 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:56:33,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:56:33,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:56:33,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:56:33,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:56:33,574 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:56:33,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:56:33,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:56:33,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:56:33,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:56:33,581 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:56:33,582 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:56:33,584 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:56:33,585 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:56:33,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:56:33,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:56:33,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:56:33,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:56:33,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:56:33,589 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:56:33,590 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:56:33,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:56:33,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:56:33,592 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:56:33,592 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:56:33,593 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:56:33,594 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:56:33,594 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 20:56:33,606 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:56:33,606 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:56:33,607 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:56:33,607 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:56:33,607 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:56:33,608 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:56:33,608 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:56:33,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:56:33,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:56:33,609 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:56:33,610 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:56:33,610 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:56:33,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:56:33,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:56:33,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:56:33,610 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:56:33,610 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:56:33,612 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:56:33,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:56:33,613 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:56:33,613 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:56:33,613 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:56:33,613 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 20:56:33,613 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:56:33,613 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:56:33,614 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:56:33,614 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_13c006af-a719-4696-b297-0eebcbf3925f/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 -> d8b7d2eba04d5104e6e025f54a673b137a0acc7a [2018-10-26 20:56:33,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:56:33,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:56:33,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:56:33,662 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:56:33,662 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:56:33,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c [2018-10-26 20:56:33,708 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/58503f2cf/8d649634e3964383afb007349085f519/FLAG869322ca2 [2018-10-26 20:56:34,100 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:56:34,101 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/sv-benchmarks/c/float-benchs/interpolation_true-unreach-call_true-termination.c [2018-10-26 20:56:34,106 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/58503f2cf/8d649634e3964383afb007349085f519/FLAG869322ca2 [2018-10-26 20:56:34,116 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/data/58503f2cf/8d649634e3964383afb007349085f519 [2018-10-26 20:56:34,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:56:34,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:56:34,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:56:34,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:56:34,125 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:56:34,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9aa741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34, skipping insertion in model container [2018-10-26 20:56:34,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:56:34,155 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:56:34,304 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:56:34,309 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:56:34,334 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:56:34,352 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:56:34,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34 WrapperNode [2018-10-26 20:56:34,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:56:34,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:56:34,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:56:34,354 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:56:34,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:56:34,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:56:34,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:56:34,393 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:56:34,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... [2018-10-26 20:56:34,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:56:34,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:56:34,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:56:34,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:56:34,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:56:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:56:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:56:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:56:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:56:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:56:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:56:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:56:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:56:35,891 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:56:35,975 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:56:35,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:56:35 BoogieIcfgContainer [2018-10-26 20:56:35,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:56:35,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:56:35,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:56:35,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:56:35,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:56:34" (1/3) ... [2018-10-26 20:56:35,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b729acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:56:35, skipping insertion in model container [2018-10-26 20:56:35,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:56:34" (2/3) ... [2018-10-26 20:56:35,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b729acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:56:35, skipping insertion in model container [2018-10-26 20:56:35,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:56:35" (3/3) ... [2018-10-26 20:56:35,985 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation_true-unreach-call_true-termination.c [2018-10-26 20:56:35,993 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:56:36,000 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:56:36,009 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:56:36,034 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:56:36,034 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:56:36,034 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:56:36,035 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:56:36,035 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:56:36,035 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:56:36,035 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:56:36,035 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:56:36,035 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:56:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-26 20:56:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 20:56:36,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:56:36,056 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:56:36,058 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:56:36,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:56:36,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1517004206, now seen corresponding path program 1 times [2018-10-26 20:56:36,067 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:56:36,067 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 20:56:36,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:56:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:56:36,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:56:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:56:36,389 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:56:36,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:56:36,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:56:36,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:56:36,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:56:36,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:56:36,421 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-26 20:56:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:56:36,435 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-10-26 20:56:36,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:56:36,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-26 20:56:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:56:36,442 INFO L225 Difference]: With dead ends: 38 [2018-10-26 20:56:36,443 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 20:56:36,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 20:56:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 20:56:36,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 20:56:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 20:56:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-10-26 20:56:36,477 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2018-10-26 20:56:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:56:36,477 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-10-26 20:56:36,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:56:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-10-26 20:56:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:56:36,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:56:36,478 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:56:36,478 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:56:36,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:56:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash -146941417, now seen corresponding path program 1 times [2018-10-26 20:56:36,480 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:56:36,481 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 20:56:36,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:56:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:56:36,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:56:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:56:36,788 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:56:36,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:56:36,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:56:36,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:56:36,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:56:36,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:56:36,801 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-10-26 20:56:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:56:39,905 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-10-26 20:56:39,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:56:39,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-26 20:56:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:56:39,950 INFO L225 Difference]: With dead ends: 30 [2018-10-26 20:56:39,951 INFO L226 Difference]: Without dead ends: 24 [2018-10-26 20:56:39,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:56:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-26 20:56:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-26 20:56:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 20:56:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 20:56:39,956 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2018-10-26 20:56:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:56:39,957 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 20:56:39,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:56:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 20:56:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 20:56:39,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:56:39,958 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:56:39,958 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:56:39,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:56:39,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1268654585, now seen corresponding path program 1 times [2018-10-26 20:56:39,960 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:56:39,960 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13c006af-a719-4696-b297-0eebcbf3925f/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:56:39,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:57:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:57:07,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:57:16,571 WARN L179 SmtUtils]: Spent 8.70 s on a formula simplification that was a NOOP. DAG size: 98 [2018-10-26 20:57:16,632 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 125 [2018-10-26 20:57:16,634 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 20:57:16,668 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 127 [2018-10-26 20:57:16,669 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:57:18,185 INFO L303 Elim1Store]: Index analysis took 263 ms [2018-10-26 20:57:18,187 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2018-10-26 20:57:18,218 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2018-10-26 20:57:18,265 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2018-10-26 20:57:18,347 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,361 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,379 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,528 INFO L303 Elim1Store]: Index analysis took 219 ms [2018-10-26 20:57:18,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 55 [2018-10-26 20:57:18,583 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,608 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,633 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,666 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,687 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,707 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:18,989 INFO L303 Elim1Store]: Index analysis took 455 ms [2018-10-26 20:57:18,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 79 [2018-10-26 20:57:19,064 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,090 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,113 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,136 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,157 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,181 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,202 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,225 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,245 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,262 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:19,683 INFO L303 Elim1Store]: Index analysis took 682 ms [2018-10-26 20:57:19,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 116 [2018-10-26 20:57:19,693 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 20:57:20,283 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:20,600 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:20,844 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:21,100 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:21,905 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:21,906 INFO L303 Elim1Store]: Index analysis took 214 ms [2018-10-26 20:57:21,907 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 105 [2018-10-26 20:57:21,920 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2018-10-26 20:57:21,935 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:21,946 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 60 [2018-10-26 20:57:21,962 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:21,964 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:21,967 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:21,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2018-10-26 20:57:22,032 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,042 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,055 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,071 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,088 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,098 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,207 INFO L303 Elim1Store]: Index analysis took 217 ms [2018-10-26 20:57:22,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 90 [2018-10-26 20:57:22,267 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,273 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,282 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,291 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,303 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,311 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,320 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,329 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,339 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,355 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,423 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:22,551 INFO L303 Elim1Store]: Index analysis took 336 ms [2018-10-26 20:57:22,552 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 132 [2018-10-26 20:57:22,553 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 20:57:22,625 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:22,666 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:22,707 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:22,741 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:22,797 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:22,938 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:23,172 INFO L303 Elim1Store]: Index analysis took 233 ms [2018-10-26 20:57:23,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 125 [2018-10-26 20:57:23,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2018-10-26 20:57:23,246 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2018-10-26 20:57:23,328 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,349 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,365 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,495 INFO L303 Elim1Store]: Index analysis took 209 ms [2018-10-26 20:57:23,496 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 55 [2018-10-26 20:57:23,538 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,554 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,572 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,588 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,602 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,616 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,837 INFO L303 Elim1Store]: Index analysis took 338 ms [2018-10-26 20:57:23,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 79 [2018-10-26 20:57:23,886 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,905 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,915 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,934 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,952 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,971 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:23,994 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:24,014 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:24,036 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:24,055 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:24,434 INFO L303 Elim1Store]: Index analysis took 589 ms [2018-10-26 20:57:24,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 116 [2018-10-26 20:57:24,436 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 20:57:24,823 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:25,094 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:25,399 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:25,602 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:25,998 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:25,999 INFO L303 Elim1Store]: Index analysis took 153 ms [2018-10-26 20:57:25,999 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 105 [2018-10-26 20:57:26,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2018-10-26 20:57:26,082 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,145 INFO L303 Elim1Store]: Index analysis took 132 ms [2018-10-26 20:57:26,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 60 [2018-10-26 20:57:26,229 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,257 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,277 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,405 INFO L303 Elim1Store]: Index analysis took 256 ms [2018-10-26 20:57:26,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2018-10-26 20:57:26,441 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,452 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,461 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,473 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,482 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,492 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,618 INFO L303 Elim1Store]: Index analysis took 209 ms [2018-10-26 20:57:26,619 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 90 [2018-10-26 20:57:26,649 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,651 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,654 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,657 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,660 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,662 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,665 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,668 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,671 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,674 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,691 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:26,736 INFO L303 Elim1Store]: Index analysis took 112 ms [2018-10-26 20:57:26,738 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 132 [2018-10-26 20:57:26,738 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-10-26 20:57:26,804 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:26,860 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:26,895 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:26,927 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:27,021 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:27,175 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:57:27,502 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 20:57:27,502 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 12 variables, input treesize:317, output treesize:211 [2018-10-26 20:57:28,749 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:28,774 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 20:57:28,800 INFO L303 Elim1Store]: Index analysis took 792 ms [2018-10-26 20:57:28,801 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 138 [2018-10-26 20:57:29,694 INFO L303 Elim1Store]: Index analysis took 891 ms [2018-10-26 20:57:31,753 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 71 [2018-10-26 20:57:31,755 INFO L267 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-10-26 20:57:50,605 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2018-10-26 20:57:50,606 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:258) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 47 more [2018-10-26 20:57:50,618 INFO L168 Benchmark]: Toolchain (without parser) took 76488.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.6 MB). Free memory was 953.2 MB in the beginning and 1.2 GB in the end (delta: -237.1 MB). Peak memory consumption was 297.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:57:50,619 INFO L168 Benchmark]: CDTParser took 1.23 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:57:50,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.62 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. [2018-10-26 20:57:50,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.01 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. [2018-10-26 20:57:50,620 INFO L168 Benchmark]: Boogie Preprocessor took 35.42 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. [2018-10-26 20:57:50,620 INFO L168 Benchmark]: RCFGBuilder took 1547.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:57:50,620 INFO L168 Benchmark]: TraceAbstraction took 74631.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -85.0 MB). Peak memory consumption was 304.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:57:50,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23 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 231.62 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 39.01 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 35.42 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 1547.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 74631.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -85.0 MB). Peak memory consumption was 304.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...