./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-acceleration/multivar_true-unreach-call1_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block SingleStatement --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_true-unreach-call1_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --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 a2577bafced442fc9d7239226a9a4234883426ad --rcfgbuilder.size.of.a.code.block SingleStatement ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 09:49:18,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:49:18,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:49:18,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:49:18,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:49:18,235 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:49:18,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:49:18,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:49:18,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:49:18,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:49:18,247 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:49:18,247 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:49:18,248 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:49:18,250 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:49:18,252 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:49:18,256 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:49:18,257 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:49:18,262 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:49:18,266 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:49:18,270 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:49:18,271 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:49:18,272 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:49:18,276 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:49:18,277 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:49:18,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:49:18,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:49:18,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:49:18,280 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:49:18,280 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:49:18,282 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:49:18,282 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:49:18,283 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:49:18,283 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:49:18,283 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:49:18,284 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:49:18,285 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:49:18,285 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:49:18,305 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:49:18,306 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:49:18,307 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:49:18,308 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:49:18,308 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:49:18,308 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:49:18,308 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:49:18,308 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:49:18,309 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:49:18,310 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:49:18,310 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:49:18,311 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:49:18,311 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:49:18,311 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:49:18,311 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:49:18,311 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:49:18,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:49:18,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:49:18,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:49:18,314 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:49:18,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:49:18,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:49:18,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:49:18,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:49:18,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:49:18,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:49:18,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:49:18,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:49:18,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:49:18,316 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:49:18,316 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:49:18,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:49:18,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:49:18,320 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:49:18,320 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 -> a2577bafced442fc9d7239226a9a4234883426ad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:49:18,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:49:18,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:49:18,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:49:18,423 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:49:18,424 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:49:18,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_true-unreach-call1_true-termination.i [2018-10-22 09:49:18,487 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/586a038a9/0796177c78bc403fa508bf09f6e67535/FLAG518b641d1 [2018-10-22 09:49:18,870 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:49:18,870 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_true-unreach-call1_true-termination.i [2018-10-22 09:49:18,877 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/586a038a9/0796177c78bc403fa508bf09f6e67535/FLAG518b641d1 [2018-10-22 09:49:18,892 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/586a038a9/0796177c78bc403fa508bf09f6e67535 [2018-10-22 09:49:18,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:49:18,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:49:18,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:49:18,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:49:18,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:49:18,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:49:18" (1/1) ... [2018-10-22 09:49:18,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241d7add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:18, skipping insertion in model container [2018-10-22 09:49:18,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:49:18" (1/1) ... [2018-10-22 09:49:18,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:49:18,935 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:49:19,134 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:49:19,138 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:49:19,157 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:49:19,174 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:49:19,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19 WrapperNode [2018-10-22 09:49:19,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:49:19,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:49:19,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:49:19,177 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:49:19,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:49:19,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:49:19,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:49:19,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:49:19,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... [2018-10-22 09:49:19,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:49:19,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:49:19,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:49:19,227 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:49:19,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:49:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:49:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:49:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:49:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:49:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:49:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:49:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:49:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:49:19,606 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:49:19,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:49:19 BoogieIcfgContainer [2018-10-22 09:49:19,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:49:19,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:49:19,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:49:19,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:49:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:49:18" (1/3) ... [2018-10-22 09:49:19,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adbdb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:49:19, skipping insertion in model container [2018-10-22 09:49:19,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:49:19" (2/3) ... [2018-10-22 09:49:19,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adbdb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:49:19, skipping insertion in model container [2018-10-22 09:49:19,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:49:19" (3/3) ... [2018-10-22 09:49:19,615 INFO L112 eAbstractionObserver]: Analyzing ICFG multivar_true-unreach-call1_true-termination.i [2018-10-22 09:49:19,626 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:49:19,634 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:49:19,653 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:49:19,687 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:49:19,687 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:49:19,688 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:49:19,688 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:49:19,688 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:49:19,688 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:49:19,688 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:49:19,688 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:49:19,688 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:49:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-10-22 09:49:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 09:49:19,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:49:19,719 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:49:19,724 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:49:19,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:49:19,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1196832639, now seen corresponding path program 1 times [2018-10-22 09:49:19,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:49:19,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:19,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:49:19,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:19,790 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:49:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:49:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:49:19,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:49:19,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 09:49:19,844 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:49:19,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 09:49:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 09:49:19,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 09:49:19,868 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-10-22 09:49:19,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:49:19,891 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-10-22 09:49:19,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 09:49:19,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-22 09:49:19,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:49:19,902 INFO L225 Difference]: With dead ends: 37 [2018-10-22 09:49:19,903 INFO L226 Difference]: Without dead ends: 20 [2018-10-22 09:49:19,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 09:49:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-22 09:49:19,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-22 09:49:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-22 09:49:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-22 09:49:19,944 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2018-10-22 09:49:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:49:19,945 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-22 09:49:19,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 09:49:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-22 09:49:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 09:49:19,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:49:19,946 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:49:19,947 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:49:19,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:49:19,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1125747585, now seen corresponding path program 1 times [2018-10-22 09:49:19,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:49:19,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:19,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:49:19,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:19,950 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:49:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:49:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:49:20,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:49:20,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-22 09:49:20,183 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:49:20,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 09:49:20,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 09:49:20,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-22 09:49:20,186 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2018-10-22 09:49:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:49:20,300 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-22 09:49:20,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 09:49:20,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-22 09:49:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:49:20,302 INFO L225 Difference]: With dead ends: 29 [2018-10-22 09:49:20,302 INFO L226 Difference]: Without dead ends: 24 [2018-10-22 09:49:20,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-22 09:49:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-22 09:49:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-10-22 09:49:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-22 09:49:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-22 09:49:20,309 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2018-10-22 09:49:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:49:20,309 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-22 09:49:20,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 09:49:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-22 09:49:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-22 09:49:20,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:49:20,310 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:49:20,311 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:49:20,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:49:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1697074666, now seen corresponding path program 1 times [2018-10-22 09:49:20,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:49:20,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:20,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:49:20,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:49:20,313 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:49:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:49:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 09:49:20,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:49:20,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-22 09:49:20,803 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:49:20,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 09:49:20,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 09:49:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-22 09:49:20,805 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2018-10-22 09:49:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:49:21,326 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-22 09:49:21,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 09:49:21,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-10-22 09:49:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:49:21,328 INFO L225 Difference]: With dead ends: 22 [2018-10-22 09:49:21,328 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:49:21,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-10-22 09:49:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:49:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:49:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:49:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:49:21,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-10-22 09:49:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:49:21,331 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:49:21,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 09:49:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:49:21,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:49:21,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:49:21,402 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:49:21,402 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:49:21,402 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:49:21,402 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:49:21,403 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:49:21,403 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:49:21,403 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 17) the Hoare annotation is: true [2018-10-22 09:49:21,403 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 17) no Hoare annotation was computed. [2018-10-22 09:49:21,403 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 09:49:21,403 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 09:49:21,404 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-10-22 09:49:21,404 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 17) no Hoare annotation was computed. [2018-10-22 09:49:21,404 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-10-22 09:49:21,405 INFO L425 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2018-10-22 09:49:21,405 INFO L425 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2018-10-22 09:49:21,405 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2018-10-22 09:49:21,405 INFO L425 ceAbstractionStarter]: For program point L13-2(line 13) no Hoare annotation was computed. [2018-10-22 09:49:21,406 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-10-22 09:49:21,406 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 15) the Hoare annotation is: (= main_~x~0 main_~y~0) [2018-10-22 09:49:21,406 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 15) the Hoare annotation is: (and (<= (+ (* 4294967296 (div main_~x~0 4294967296)) 1024) main_~y~0) (<= main_~y~0 main_~x~0) (<= main_~x~0 main_~y~0)) [2018-10-22 09:49:21,406 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 09:49:21,406 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:49:21,407 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 09:49:21,407 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 09:49:21,407 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 09:49:21,407 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:49:21,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:49:21 BoogieIcfgContainer [2018-10-22 09:49:21,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:49:21,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:49:21,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:49:21,421 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:49:21,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:49:19" (3/4) ... [2018-10-22 09:49:21,424 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:49:21,431 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:49:21,431 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:49:21,431 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:49:21,435 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-22 09:49:21,436 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-22 09:49:21,436 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:49:21,483 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:49:21,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:49:21,484 INFO L168 Benchmark]: Toolchain (without parser) took 2588.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -117.6 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:21,486 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:49:21,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.92 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:21,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.32 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:49:21,488 INFO L168 Benchmark]: Boogie Preprocessor took 26.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:49:21,489 INFO L168 Benchmark]: RCFGBuilder took 380.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -203.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:21,490 INFO L168 Benchmark]: TraceAbstraction took 1811.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:21,491 INFO L168 Benchmark]: Witness Printer took 63.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:49:21,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.92 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.32 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 380.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -203.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1811.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 11.5 GB. * Witness Printer took 63.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: x == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 8 SDslu, 97 SDs, 0 SdLazy, 74 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 24 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 2245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...