./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/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_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/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-aa41828 [2018-11-23 13:19:47,373 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:19:47,375 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:19:47,382 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:19:47,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:19:47,382 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:19:47,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:19:47,384 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:19:47,385 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:19:47,386 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:19:47,386 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:19:47,387 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:19:47,387 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:19:47,388 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:19:47,389 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:19:47,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:19:47,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:19:47,391 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:19:47,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:19:47,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:19:47,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:19:47,395 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:19:47,396 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:19:47,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:19:47,397 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:19:47,397 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:19:47,398 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:19:47,399 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:19:47,399 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:19:47,400 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:19:47,400 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:19:47,401 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:19:47,401 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:19:47,401 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:19:47,402 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:19:47,402 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:19:47,402 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:19:47,412 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:19:47,412 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:19:47,412 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:19:47,413 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:19:47,413 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:19:47,414 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:19:47,414 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:19:47,414 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:19:47,414 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:19:47,415 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:19:47,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:19:47,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:19:47,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:19:47,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:19:47,417 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:19:47,417 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:19:47,417 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:19:47,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:19:47,417 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:19:47,417 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_c9191a68-9afb-4561-b2be-e8ea767494bf/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 [2018-11-23 13:19:47,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:19:47,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:19:47,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:19:47,451 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:19:47,452 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:19:47,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-11-23 13:19:47,487 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/data/05086e0f4/53020a4977e14b3a9ba2744a48afe8a3/FLAG7c10290f3 [2018-11-23 13:19:47,882 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:19:47,883 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-11-23 13:19:47,887 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/data/05086e0f4/53020a4977e14b3a9ba2744a48afe8a3/FLAG7c10290f3 [2018-11-23 13:19:47,896 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/data/05086e0f4/53020a4977e14b3a9ba2744a48afe8a3 [2018-11-23 13:19:47,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:19:47,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:19:47,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:19:47,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:19:47,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:19:47,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:19:47" (1/1) ... [2018-11-23 13:19:47,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd9ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:47, skipping insertion in model container [2018-11-23 13:19:47,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:19:47" (1/1) ... [2018-11-23 13:19:47,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:19:47,925 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:19:48,033 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:19:48,035 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:19:48,044 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:19:48,053 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:19:48,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48 WrapperNode [2018-11-23 13:19:48,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:19:48,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:19:48,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:19:48,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:19:48,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:19:48,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:19:48,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:19:48,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:19:48,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... [2018-11-23 13:19:48,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:19:48,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:19:48,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:19:48,079 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:19:48,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/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 [2018-11-23 13:19:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:19:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:19:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:19:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:19:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:19:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:19:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 13:19:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 13:19:48,249 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:19:48,249 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 13:19:48,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:19:48 BoogieIcfgContainer [2018-11-23 13:19:48,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:19:48,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:19:48,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:19:48,252 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:19:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:19:47" (1/3) ... [2018-11-23 13:19:48,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a487c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:19:48, skipping insertion in model container [2018-11-23 13:19:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:19:48" (2/3) ... [2018-11-23 13:19:48,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a487c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:19:48, skipping insertion in model container [2018-11-23 13:19:48,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:19:48" (3/3) ... [2018-11-23 13:19:48,255 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_true-unreach-call_true-termination.i [2018-11-23 13:19:48,263 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:19:48,269 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:19:48,282 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:19:48,304 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:19:48,304 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:19:48,304 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:19:48,304 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:19:48,304 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:19:48,304 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:19:48,304 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:19:48,305 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:19:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 13:19:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 13:19:48,318 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:19:48,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:19:48,320 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:19:48,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:19:48,323 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2018-11-23 13:19:48,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:19:48,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:48,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:19:48,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:48,355 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:19:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:19:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:48,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:19:48,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 13:19:48,395 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:19:48,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 13:19:48,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 13:19:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 13:19:48,411 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-23 13:19:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:19:48,425 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-11-23 13:19:48,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 13:19:48,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-23 13:19:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:19:48,431 INFO L225 Difference]: With dead ends: 30 [2018-11-23 13:19:48,431 INFO L226 Difference]: Without dead ends: 13 [2018-11-23 13:19:48,433 INFO L631 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 [2018-11-23 13:19:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-23 13:19:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-23 13:19:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 13:19:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-23 13:19:48,461 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-23 13:19:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:19:48,462 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-23 13:19:48,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 13:19:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-23 13:19:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 13:19:48,462 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:19:48,462 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:19:48,463 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:19:48,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:19:48,463 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2018-11-23 13:19:48,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:19:48,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:48,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:19:48,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:48,464 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:19:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:19:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:48,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:19:48,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:19:48,544 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:19:48,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:19:48,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:19:48,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:19:48,546 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-23 13:19:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:19:48,587 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-23 13:19:48,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:19:48,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-23 13:19:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:19:48,588 INFO L225 Difference]: With dead ends: 19 [2018-11-23 13:19:48,588 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 13:19:48,588 INFO L631 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 [2018-11-23 13:19:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 13:19:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-23 13:19:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 13:19:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-23 13:19:48,591 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-23 13:19:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:19:48,591 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-23 13:19:48,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:19:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-23 13:19:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 13:19:48,592 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:19:48,592 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:19:48,592 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:19:48,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:19:48,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2018-11-23 13:19:48,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:19:48,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:48,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:19:48,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:48,594 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:19:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:19:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:48,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:19:48,820 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:19:48,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-11-23 13:19:48,822 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [24], [27], [29], [35], [36], [37], [39] [2018-11-23 13:19:48,847 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 13:19:48,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 13:19:48,952 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 13:19:48,953 INFO L272 AbstractInterpreter]: Visited 13 different actions 33 times. Merged at 3 different actions 9 times. Widened at 1 different actions 1 times. Performed 89 root evaluator evaluations with a maximum evaluation depth of 6. Performed 89 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-23 13:19:48,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:19:48,965 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 13:19:48,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:19:48,965 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/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 [2018-11-23 13:19:48,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:19:48,980 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 13:19:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:19:48,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:19:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:49,110 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:19:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:49,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:19:49,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2018-11-23 13:19:49,239 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:19:49,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 13:19:49,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 13:19:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-11-23 13:19:49,240 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-11-23 13:19:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:19:49,343 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-23 13:19:49,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 13:19:49,344 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-11-23 13:19:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:19:49,344 INFO L225 Difference]: With dead ends: 24 [2018-11-23 13:19:49,344 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 13:19:49,345 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-11-23 13:19:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 13:19:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 13:19:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 13:19:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-23 13:19:49,348 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-11-23 13:19:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:19:49,348 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-23 13:19:49,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 13:19:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-23 13:19:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-23 13:19:49,349 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:19:49,349 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:19:49,350 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:19:49,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:19:49,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2018-11-23 13:19:49,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:19:49,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:49,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:19:49,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:19:49,352 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:19:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:19:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 13:19:49,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:19:49,504 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:19:49,504 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 13:19:49,504 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 13:19:49,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:19:49,504 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/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 [2018-11-23 13:19:49,512 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 13:19:49,513 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 13:19:49,523 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 13:19:49,523 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:19:49,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:19:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:49,640 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:19:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:19:49,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:19:49,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2018-11-23 13:19:49,853 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:19:49,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 13:19:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 13:19:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2018-11-23 13:19:49,854 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-11-23 13:19:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:19:50,067 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-23 13:19:50,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 13:19:50,068 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-11-23 13:19:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:19:50,068 INFO L225 Difference]: With dead ends: 21 [2018-11-23 13:19:50,068 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:19:50,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2018-11-23 13:19:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:19:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:19:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:19:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:19:50,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-23 13:19:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:19:50,070 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:19:50,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 13:19:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:19:50,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:19:50,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 13:19:50,130 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 13:19:50,130 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:19:50,130 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:19:50,130 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 13:19:50,130 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 13:19:50,130 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 13:19:50,131 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-11-23 13:19:50,131 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-23 13:19:50,131 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-23 13:19:50,131 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2018-11-23 13:19:50,131 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2018-11-23 13:19:50,131 INFO L444 ceAbstractionStarter]: At program point L14-3(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))) [2018-11-23 13:19:50,131 INFO L444 ceAbstractionStarter]: At program point L14-4(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)) [2018-11-23 13:19:50,131 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-23 13:19:50,132 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-23 13:19:50,132 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-23 13:19:50,132 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-23 13:19:50,132 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-23 13:19:50,132 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-23 13:19:50,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:19:50 BoogieIcfgContainer [2018-11-23 13:19:50,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:19:50,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:19:50,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:19:50,140 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:19:50,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:19:48" (3/4) ... [2018-11-23 13:19:50,143 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:19:50,146 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 13:19:50,147 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 13:19:50,147 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 13:19:50,150 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 13:19:50,150 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 13:19:50,150 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:19:50,177 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c9191a68-9afb-4561-b2be-e8ea767494bf/bin-2019/utaipan/witness.graphml [2018-11-23 13:19:50,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:19:50,178 INFO L168 Benchmark]: Toolchain (without parser) took 2278.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 953.8 MB in the beginning and 887.2 MB in the end (delta: 66.6 MB). Peak memory consumption was 250.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:19:50,179 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:19:50,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.83 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:19:50,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.38 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:19:50,180 INFO L168 Benchmark]: Boogie Preprocessor took 11.87 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:19:50,180 INFO L168 Benchmark]: RCFGBuilder took 170.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -228.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:19:50,181 INFO L168 Benchmark]: TraceAbstraction took 1889.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 890.4 MB in the end (delta: 278.0 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. [2018-11-23 13:19:50,181 INFO L168 Benchmark]: Witness Printer took 37.18 ms. Allocated memory is still 1.2 GB. Free memory was 890.4 MB in the beginning and 887.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:19:50,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.83 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.38 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.87 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -228.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1889.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 890.4 MB in the end (delta: 278.0 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. * Witness Printer took 37.18 ms. Allocated memory is still 1.2 GB. Free memory was 890.4 MB in the beginning and 887.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 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, 19 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 10 SDslu, 143 SDs, 0 SdLazy, 183 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s 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, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 8 QuantifiedInterpolants, 10120 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...