./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/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 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:17:24,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:17:24,449 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:17:24,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:17:24,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:17:24,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:17:24,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:17:24,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:17:24,459 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:17:24,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:17:24,460 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:17:24,461 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:17:24,461 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:17:24,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:17:24,463 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:17:24,463 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:17:24,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:17:24,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:17:24,467 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:17:24,468 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:17:24,469 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:17:24,469 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:17:24,471 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:17:24,471 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:17:24,471 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:17:24,473 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:17:24,473 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:17:24,474 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:17:24,474 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:17:24,475 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:17:24,475 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:17:24,476 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:17:24,476 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:17:24,476 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:17:24,477 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:17:24,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:17:24,478 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 11:17:24,488 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:17:24,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:17:24,489 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:17:24,489 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 11:17:24,489 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 11:17:24,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 11:17:24,489 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 11:17:24,489 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 11:17:24,489 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 11:17:24,490 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 11:17:24,490 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 11:17:24,490 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:17:24,490 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:17:24,491 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:17:24,492 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:17:24,492 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:17:24,492 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:17:24,492 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:17:24,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:17:24,494 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:17:24,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:17:24,494 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:17:24,494 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:17:24,494 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:17:24,494 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 11:17:24,494 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:17:24,495 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:17:24,495 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 11:17:24,495 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_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/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 -> 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a [2018-11-10 11:17:24,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:17:24,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:17:24,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:17:24,527 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:17:24,527 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:17:24,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-11-10 11:17:24,562 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/data/82265723d/26ced9feeedd469186e3b3ac39a3132c/FLAGc7a313b8b [2018-11-10 11:17:24,956 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:17:24,956 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-11-10 11:17:24,961 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/data/82265723d/26ced9feeedd469186e3b3ac39a3132c/FLAGc7a313b8b [2018-11-10 11:17:24,970 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/data/82265723d/26ced9feeedd469186e3b3ac39a3132c [2018-11-10 11:17:24,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:17:24,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 11:17:24,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:17:24,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:17:24,975 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:17:24,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:17:24" (1/1) ... [2018-11-10 11:17:24,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a876ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:24, skipping insertion in model container [2018-11-10 11:17:24,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:17:24" (1/1) ... [2018-11-10 11:17:24,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:17:24,994 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:17:25,087 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:17:25,089 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:17:25,099 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:17:25,107 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:17:25,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25 WrapperNode [2018-11-10 11:17:25,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:17:25,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 11:17:25,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 11:17:25,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 11:17:25,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 11:17:25,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:17:25,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:17:25,125 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:17:25,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... [2018-11-10 11:17:25,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:17:25,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:17:25,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:17:25,141 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:17:25,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:17:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:17:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:17:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:17:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:17:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:17:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:17:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 11:17:25,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 11:17:25,342 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:17:25,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:17:25 BoogieIcfgContainer [2018-11-10 11:17:25,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:17:25,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:17:25,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:17:25,346 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:17:25,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:17:24" (1/3) ... [2018-11-10 11:17:25,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3343938c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:17:25, skipping insertion in model container [2018-11-10 11:17:25,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:17:25" (2/3) ... [2018-11-10 11:17:25,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3343938c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:17:25, skipping insertion in model container [2018-11-10 11:17:25,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:17:25" (3/3) ... [2018-11-10 11:17:25,349 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_true-unreach-call_true-termination.i [2018-11-10 11:17:25,357 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:17:25,362 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:17:25,373 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:17:25,400 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:17:25,400 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:17:25,400 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:17:25,400 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:17:25,400 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:17:25,400 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:17:25,401 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:17:25,401 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:17:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-10 11:17:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 11:17:25,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:17:25,420 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:17:25,422 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:17:25,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:17:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1280988026, now seen corresponding path program 1 times [2018-11-10 11:17:25,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:17:25,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:25,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:17:25,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:25,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:17:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:17:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:25,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:17:25,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 11:17:25,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 11:17:25,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 11:17:25,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 11:17:25,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:17:25,518 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-10 11:17:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:17:25,536 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-10 11:17:25,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 11:17:25,537 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-10 11:17:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:17:25,542 INFO L225 Difference]: With dead ends: 31 [2018-11-10 11:17:25,542 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 11:17:25,544 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 [2018-11-10 11:17:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 11:17:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 11:17:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 11:17:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-10 11:17:25,566 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-10 11:17:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:17:25,566 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-10 11:17:25,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 11:17:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-10 11:17:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 11:17:25,567 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:17:25,567 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:17:25,567 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:17:25,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:17:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1336229576, now seen corresponding path program 1 times [2018-11-10 11:17:25,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:17:25,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:25,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:17:25,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:25,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:17:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:17:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:25,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:17:25,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:17:25,626 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 11:17:25,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:17:25,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:17:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:17:25,628 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-11-10 11:17:25,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:17:25,657 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-10 11:17:25,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:17:25,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-10 11:17:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:17:25,658 INFO L225 Difference]: With dead ends: 21 [2018-11-10 11:17:25,658 INFO L226 Difference]: Without dead ends: 16 [2018-11-10 11:17:25,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:17:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-10 11:17:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-10 11:17:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 11:17:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-10 11:17:25,661 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-11-10 11:17:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:17:25,661 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-10 11:17:25,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:17:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-10 11:17:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 11:17:25,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:17:25,662 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:17:25,662 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:17:25,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:17:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash -214348638, now seen corresponding path program 1 times [2018-11-10 11:17:25,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:17:25,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:25,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:17:25,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:25,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:17:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:17:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:25,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:17:25,846 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 11:17:25,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 11:17:25,848 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [17], [19], [25], [28], [30], [36], [37], [38], [40] [2018-11-10 11:17:25,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 11:17:25,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 11:17:26,088 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 11:17:26,089 INFO L272 AbstractInterpreter]: Visited 14 different actions 141 times. Merged at 4 different actions 64 times. Widened at 1 different actions 12 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-10 11:17:26,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:17:26,102 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 11:17:26,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:17:26,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:17:26,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:17:26,109 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 11:17:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:17:26,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:17:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:26,272 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:17:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:26,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 11:17:26,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2018-11-10 11:17:26,399 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:17:26,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 11:17:26,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 11:17:26,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-11-10 11:17:26,400 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2018-11-10 11:17:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:17:26,534 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-10 11:17:26,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 11:17:26,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2018-11-10 11:17:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:17:26,535 INFO L225 Difference]: With dead ends: 28 [2018-11-10 11:17:26,535 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 11:17:26,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-11-10 11:17:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 11:17:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-10 11:17:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 11:17:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-10 11:17:26,539 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2018-11-10 11:17:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:17:26,539 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-10 11:17:26,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 11:17:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-10 11:17:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 11:17:26,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:17:26,540 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:17:26,541 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:17:26,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:17:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1462115102, now seen corresponding path program 2 times [2018-11-10 11:17:26,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:17:26,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:26,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:17:26,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:17:26,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:17:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:17:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 11:17:26,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:17:26,669 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 11:17:26,669 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 11:17:26,670 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 11:17:26,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:17:26,670 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:17:26,684 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 11:17:26,685 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 11:17:26,694 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 11:17:26,694 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:17:26,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:17:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:26,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:17:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:17:27,083 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 11:17:27,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2018-11-10 11:17:27,083 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:17:27,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 11:17:27,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 11:17:27,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2018-11-10 11:17:27,084 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 18 states. [2018-11-10 11:17:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:17:27,287 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-10 11:17:27,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 11:17:27,288 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2018-11-10 11:17:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:17:27,288 INFO L225 Difference]: With dead ends: 26 [2018-11-10 11:17:27,288 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 11:17:27,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 11:17:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 11:17:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 11:17:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 11:17:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 11:17:27,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-10 11:17:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:17:27,291 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:17:27,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 11:17:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:17:27,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 11:17:27,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 11:17:27,355 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 11:17:27,356 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 16) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2018-11-10 11:17:27,356 INFO L425 ceAbstractionStarter]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2018-11-10 11:17:27,357 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~i~0 1) (= main_~sn~0 0))) [2018-11-10 11:17:27,357 INFO L421 ceAbstractionStarter]: At program point L14-5(lines 14 16) the Hoare annotation is: (or (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1)))) (= main_~sn~0 0)) [2018-11-10 11:17:27,357 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-10 11:17:27,357 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-10 11:17:27,357 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-10 11:17:27,357 INFO L425 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-10 11:17:27,357 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-10 11:17:27,357 INFO L425 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-10 11:17:27,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:17:27 BoogieIcfgContainer [2018-11-10 11:17:27,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:17:27,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:17:27,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:17:27,366 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:17:27,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:17:25" (3/4) ... [2018-11-10 11:17:27,368 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 11:17:27,372 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 11:17:27,372 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 11:17:27,372 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 11:17:27,374 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 11:17:27,374 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 11:17:27,375 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 11:17:27,401 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e5662d76-1fd5-47e3-b51a-4a5cd32a11d7/bin-2019/utaipan/witness.graphml [2018-11-10 11:17:27,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:17:27,401 INFO L168 Benchmark]: Toolchain (without parser) took 2429.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 960.2 MB in the beginning and 843.2 MB in the end (delta: 117.0 MB). Peak memory consumption was 274.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:17:27,403 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:17:27,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.95 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:17:27,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.79 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:17:27,404 INFO L168 Benchmark]: Boogie Preprocessor took 16.34 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:17:27,404 INFO L168 Benchmark]: RCFGBuilder took 202.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 11:17:27,405 INFO L168 Benchmark]: TraceAbstraction took 2021.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 846.6 MB in the end (delta: 297.2 MB). Peak memory consumption was 297.2 MB. Max. memory is 11.5 GB. [2018-11-10 11:17:27,405 INFO L168 Benchmark]: Witness Printer took 35.38 ms. Allocated memory is still 1.2 GB. Free memory was 846.6 MB in the beginning and 843.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:17:27,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.95 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.79 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.34 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 202.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -198.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2021.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 846.6 MB in the end (delta: 297.2 MB). Peak memory consumption was 297.2 MB. Max. memory is 11.5 GB. * Witness Printer took 35.38 ms. Allocated memory is still 1.2 GB. Free memory was 846.6 MB in the beginning and 843.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) || (i == 1 && sn == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 12 SDslu, 216 SDs, 0 SdLazy, 195 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 52 HoareAnnotationTreeSize, 12 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 12 QuantifiedInterpolants, 17515 SizeOfPredicates, 8 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 7/51 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...