./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/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 138b427ae0d59b9c3947d32f186331712a870d16 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:22:22,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:22:22,440 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:22:22,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:22:22,446 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:22:22,446 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:22:22,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:22:22,448 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:22:22,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:22:22,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:22:22,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:22:22,451 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:22:22,451 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:22:22,452 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:22:22,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:22:22,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:22:22,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:22:22,455 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:22:22,456 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:22:22,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:22:22,458 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:22:22,459 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:22:22,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:22:22,461 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:22:22,461 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:22:22,462 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:22:22,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:22:22,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:22:22,464 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:22:22,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:22:22,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:22:22,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:22:22,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:22:22,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:22:22,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:22:22,466 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:22:22,467 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:22:22,475 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:22:22,475 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:22:22,476 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:22:22,476 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:22:22,476 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:22:22,476 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:22:22,476 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:22:22,477 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:22:22,477 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:22:22,477 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:22:22,477 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:22:22,477 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:22:22,477 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:22:22,478 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:22:22,478 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:22:22,478 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:22:22,478 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:22:22,479 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:22:22,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:22:22,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:22:22,480 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:22:22,480 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:22:22,480 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:22:22,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:22:22,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:22:22,481 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:22:22,481 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:22:22,481 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:22:22,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:22:22,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:22:22,482 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:22:22,482 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_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/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 -> 138b427ae0d59b9c3947d32f186331712a870d16 [2018-11-18 12:22:22,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:22:22,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:22:22,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:22:22,515 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:22:22,515 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:22:22,515 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-18 12:22:22,549 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/data/c5380cb61/14890ad84aa2434cbf27d2c4617664f2/FLAGf0fcecc9a [2018-11-18 12:22:22,942 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:22:22,943 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-18 12:22:22,947 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/data/c5380cb61/14890ad84aa2434cbf27d2c4617664f2/FLAGf0fcecc9a [2018-11-18 12:22:22,955 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/data/c5380cb61/14890ad84aa2434cbf27d2c4617664f2 [2018-11-18 12:22:22,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:22:22,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:22:22,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:22:22,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:22:22,962 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:22:22,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:22:22" (1/1) ... [2018-11-18 12:22:22,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f35898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:22, skipping insertion in model container [2018-11-18 12:22:22,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:22:22" (1/1) ... [2018-11-18 12:22:22,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:22:22,985 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:22:23,093 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:22:23,096 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:22:23,108 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:22:23,116 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:22:23,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23 WrapperNode [2018-11-18 12:22:23,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:22:23,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:22:23,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:22:23,117 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:22:23,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:22:23,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:22:23,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:22:23,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:22:23,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... [2018-11-18 12:22:23,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:22:23,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:22:23,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:22:23,147 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:22:23,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/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 [2018-11-18 12:22:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:22:23,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:22:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:22:23,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:22:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:22:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:22:23,365 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:22:23,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:22:23 BoogieIcfgContainer [2018-11-18 12:22:23,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:22:23,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:22:23,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:22:23,369 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:22:23,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:22:22" (1/3) ... [2018-11-18 12:22:23,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5544c309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:22:23, skipping insertion in model container [2018-11-18 12:22:23,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:22:23" (2/3) ... [2018-11-18 12:22:23,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5544c309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:22:23, skipping insertion in model container [2018-11-18 12:22:23,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:22:23" (3/3) ... [2018-11-18 12:22:23,372 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-18 12:22:23,380 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:22:23,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:22:23,400 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:22:23,426 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:22:23,426 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:22:23,426 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:22:23,426 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:22:23,426 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:22:23,427 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:22:23,427 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:22:23,427 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:22:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 12:22:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 12:22:23,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:22:23,446 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:22:23,448 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:22:23,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:22:23,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2018-11-18 12:22:23,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:22:23,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:22:23,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:22:23,495 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:22:23,533 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:22:23,533 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:22:23,533 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 12:22:23,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:23,549 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:22:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:22:23,581 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-18 12:22:23,583 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 12:22:23,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:22:23,583 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/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 [2018-11-18 12:22:23,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:23,591 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 12:22:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:22:23,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:22:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:22:23,753 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:22:23,859 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-18 12:22:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:22:27,936 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:22:27,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2018-11-18 12:22:27,936 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:22:27,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:22:27,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:22:27,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=105, Unknown=1, NotChecked=20, Total=156 [2018-11-18 12:22:27,952 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 9 states. [2018-11-18 12:22:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:22:28,084 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-11-18 12:22:28,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:22:28,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-18 12:22:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:22:28,091 INFO L225 Difference]: With dead ends: 41 [2018-11-18 12:22:28,091 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:22:28,094 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=36, Invalid=123, Unknown=1, NotChecked=22, Total=182 [2018-11-18 12:22:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:22:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 12:22:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 12:22:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 12:22:28,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-11-18 12:22:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:22:28,116 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 12:22:28,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:22:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 12:22:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 12:22:28,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:22:28,117 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:22:28,117 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:22:28,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:22:28,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1787659072, now seen corresponding path program 1 times [2018-11-18 12:22:28,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:22:28,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:22:28,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:28,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:22:28,118 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:22:28,126 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:22:28,126 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:22:28,126 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 12:22:28,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:28,133 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:22:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:22:28,153 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-11-18 12:22:28,155 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [19], [22], [25], [28], [32], [34], [37], [38], [47], [48], [49] [2018-11-18 12:22:28,174 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 12:22:28,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 12:22:28,304 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 12:22:28,305 INFO L272 AbstractInterpreter]: Visited 17 different actions 29 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 140 root evaluator evaluations with a maximum evaluation depth of 6. Performed 140 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-18 12:22:28,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:22:28,312 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 12:22:28,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:22:28,312 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:22:28,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:28,325 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 12:22:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:22:28,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:22:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:22:28,433 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:22:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:22:28,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:22:28,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2018-11-18 12:22:28,632 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 12:22:28,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 12:22:28,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 12:22:28,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=140, Unknown=2, NotChecked=0, Total=182 [2018-11-18 12:22:28,633 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2018-11-18 12:22:28,852 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:22:28,972 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-18 12:22:28,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 12:22:28,972 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-11-18 12:22:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:22:28,973 INFO L225 Difference]: With dead ends: 26 [2018-11-18 12:22:28,973 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 12:22:28,973 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=370, Unknown=3, NotChecked=40, Total=506 [2018-11-18 12:22:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 12:22:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 12:22:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 12:22:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-18 12:22:28,976 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-11-18 12:22:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:22:28,977 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-18 12:22:28,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 12:22:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-18 12:22:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 12:22:28,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:22:28,978 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:22:28,978 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:22:28,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:22:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1505077242, now seen corresponding path program 2 times [2018-11-18 12:22:28,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:22:28,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:22:28,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:22:28,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:22:28,979 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:22:28,990 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 12:22:28,990 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 12:22:28,990 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 12:22:28,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:22:28,996 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 12:22:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:22:29,018 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 12:22:29,018 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 12:22:29,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:22:29,018 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:22:29,024 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:22:29,024 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 12:22:29,037 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 12:22:29,038 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:22:29,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:22:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:22:29,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:22:29,189 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-18 12:22:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2018-11-18 12:22:29,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:22:29,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2018-11-18 12:22:29,369 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 12:22:29,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 12:22:29,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 12:22:29,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=237, Unknown=8, NotChecked=32, Total=342 [2018-11-18 12:22:29,370 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 19 states. [2018-11-18 12:22:29,414 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= c_main_~main__sum~0 1) (= 2 c_main_~main__i~0) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:29,524 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= c_main_~main__sum~0 21) (= 7 c_main_~main__i~0) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:29,536 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= 8 c_main_~main__i~0) (= c_main_~main__sum~0 28) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:29,549 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= 9 c_main_~main__i~0) (= c_main_~main__sum~0 36) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:29,698 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (forall ((main_~main__n~0 Int)) (let ((.cse1 (+ c_main_~main__i~0 3))) (or (< .cse1 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse1)))) (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:29,788 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-18 12:22:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:22:29,789 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-11-18 12:22:29,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 12:22:29,790 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 20 [2018-11-18 12:22:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:22:29,790 INFO L225 Difference]: With dead ends: 24 [2018-11-18 12:22:29,790 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:22:29,791 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=405, Unknown=14, NotChecked=336, Total=870 [2018-11-18 12:22:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:22:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:22:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:22:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:22:29,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-18 12:22:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:22:29,791 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:22:29,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 12:22:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:22:29,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:22:29,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:22:33,944 WARN L180 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 46 DAG size of output: 19 [2018-11-18 12:22:33,945 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:22:33,946 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point L62(lines 62 71) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 101) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 101) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point L44(lines 44 78) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 83) no Hoare annotation was computed. [2018-11-18 12:22:33,946 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 88) no Hoare annotation was computed. [2018-11-18 12:22:33,947 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 93) no Hoare annotation was computed. [2018-11-18 12:22:33,947 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 101) the Hoare annotation is: true [2018-11-18 12:22:33,947 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 98) no Hoare annotation was computed. [2018-11-18 12:22:33,947 INFO L421 ceAbstractionStarter]: At program point L53(lines 45 74) the Hoare annotation is: (and (forall ((main_~main__n~0 Int)) (or (< main_~main__i~0 main_~main__n~0) (= (+ (* 2 main_~main__sum~0) (* 2 main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 main_~main__i~0))) (or (<= main_~main__i~0 main_~main__n~0) (= (* 2 main_~main__sum~0) (* (+ main_~main__n~0 1) main_~main__n~0)))) [2018-11-18 12:22:33,947 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 99) no Hoare annotation was computed. [2018-11-18 12:22:33,947 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 100) no Hoare annotation was computed. [2018-11-18 12:22:33,951 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,952 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,952 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,952 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,958 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,959 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,959 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,959 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:33,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:22:33 BoogieIcfgContainer [2018-11-18 12:22:33,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:22:33,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:22:33,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:22:33,962 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:22:33,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:22:23" (3/4) ... [2018-11-18 12:22:33,965 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:22:33,970 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:22:33,970 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:22:33,974 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 12:22:33,974 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 12:22:34,008 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_666bf2a8-91f2-4429-a3bf-9f12603b0ab5/bin-2019/utaipan/witness.graphml [2018-11-18 12:22:34,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:22:34,008 INFO L168 Benchmark]: Toolchain (without parser) took 11050.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 960.3 MB in the beginning and 833.6 MB in the end (delta: 126.7 MB). Peak memory consumption was 269.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:22:34,009 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:22:34,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:22:34,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.67 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:22:34,010 INFO L168 Benchmark]: Boogie Preprocessor took 15.65 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:22:34,010 INFO L168 Benchmark]: RCFGBuilder took 219.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:22:34,010 INFO L168 Benchmark]: TraceAbstraction took 10594.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 837.1 MB in the end (delta: 288.1 MB). Peak memory consumption was 288.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:22:34,011 INFO L168 Benchmark]: Witness Printer took 46.40 ms. Allocated memory is still 1.2 GB. Free memory was 837.1 MB in the beginning and 833.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:22:34,013 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 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 13.67 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.65 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 219.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10594.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 837.1 MB in the end (delta: 288.1 MB). Peak memory consumption was 288.1 MB. Max. memory is 11.5 GB. * Witness Printer took 46.40 ms. Allocated memory is still 1.2 GB. Free memory was 837.1 MB in the beginning and 833.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 64]: 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: 45]: Loop Invariant [2018-11-18 12:22:34,016 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,016 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,016 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,016 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,017 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,017 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,017 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-18 12:22:34,017 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (forall main_~main__n~0 : int :: (main__i < main_~main__n~0 || 2 * main__sum + 2 * main__i == (main_~main__n~0 + 1) * main_~main__n~0) || main_~main__n~0 < main__i) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. SAFE Result, 10.5s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 4.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 22 SDslu, 267 SDs, 0 SdLazy, 301 SolverSat, 34 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 39 HoareAnnotationTreeSize, 5 FomulaSimplifications, 224 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 127 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 20 QuantifiedInterpolants, 12836 SizeOfPredicates, 18 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 2/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...